Dude I want to thank you for taking the torch on the older generation block the information you're putting out is spot-on, people are going to realize how valuable this knowledge is, thanks again your friend RDO
Multiple companies use these heads skip white , assualt racing , rcp ect. There's a big thread about them on the third gen forum buget assualt racing head. They actually look just like dart platinum heads too. My set has either the vortec or early version intake bolts . I had choice of angle or straight plug and with or with out steam holes when purchased. They cost allot more than 186$ in 2016. Solid head though. I port matched a 1266 gasket to my single plane efi intake. My heads are raised runner ports. I bought mine bare too. I lapped all my valves . I own a machine shop. In the tread I mention I put a set on a surface plate and belive they were flat with in .0004 ten thousandths . I've had my set on my gen 1 sbc 383 with a s488 turbo since 2016. No issues.
Yes, so many people are all about them flow numbers, but that's just a small part of the story. Port velocity is even more critical when it comes right down to it!
this is 90s thinking all that matters is getting cfm into the chamber, which larger heads can. I've been running 195cc heads on 5.0L sbf and have yet to see a smaller high velocity head (like ported E7 head) outperform me in the 2,000-4,000 rpm range
If I had a use for them I would order a set in a minute. Interesting thing though, the heads found on the 4.3L v6 Vortec motor found in Chevy light duty trucks flow quite a bit out of the box and with a clean up will flow over 300 CFM easy and that's more that the aftermarktet heads found for a Grand National or the Buick Stage 2 heads. The heads from GM parts direct, are cheap. Only $168 for a pair, that is crazy and they are made with very high quality and engineering. The trade off, well you have to do a lot of custom work to swap the 4.3l v6 vortec into a Grand National for instances.
@@charleslowe522 4.3 heads are Chevy heads. Grand Nationals use a 109 cast BOP 3.8 block. They heads, intake, etc won't interchange. Two completely different animals.
@@charleslowe522 thanks for sharing! I can’t find the heads you mentioned for $168 for the pair. Could you share a link? I would love to get a replacement set for that price. For my GMC Safari =D
Damn, back in the day, we couldn't have even imagined getting a head as good as those DNA heads for anywhere near those prices. Holy hell the world has changed - haven't priced aftermarket aluminum heads since the mid-90's for SBC.
Super simple nowadays. China just takes a good design, and illegally copies it. Then you find them for dirt cheap on Amazon, or ebay. They save themselves from r&d by just stealing the design.
@@warhorse58gt Since they make most of them for us, we either invest in America, or continue to lose out to China. I'm not condoning theft, but it would be harder to steal if China wasn't casting a large percentage of our parts to begin with.
@@warhorse58gt that does happen.. a lot. But its just as common for American companies to take their designs to China and have them made there. The glut of affordable stroker kits over the last few decades are 100% due to companies importing Chinese cranks.
I’m glad to see some up to date videos about vortec stuff in a time where the world has gone LS swap crazy. Just dropped a set off vortec head on my Malibu and I’m currently searching for a good full roller vortec engine for my camaro
I hear you everything is LS these days. I have a marine vortec in my truck. I have an LS to swap in, but gonna leave it sbc. I picked up a hardly used Weiand 144 with the vortec base in a deal with a friend. I am going to put it on and slip in a blower cam. It's already a roller cam engine so should make for a nice setup. Also running it on E85 to keep charge temps down. These little blowers love E85 from what I am finding.
I picked up a set of “Deepmotor” aka Chicom copies for $380 190cc int. runners & 64cc chambers and I did have to clean them up a bit (they’ll run fine I’m just ocd) but I picked up more power than $400 should have gotten me. I’d rather buy from an American company but I’m not wealthy so these domestic producers like AFR or Edelbrock etc... need to come out with actual budget heads if they want to retain customers that can’t afford their heads even when they’re used let alone new
Check the thickness of the upper wall, inside the intake side, on the short side of the valve radius. We made a lot more horsepower with a higher top wall there. It’s even more pronounced with 351 Cleveland heads for fords, BUT, ( on Cleveland heads) because of the volume inside the runner, it’s best to put vanes inside the runners. This is done by drilling a hole in the bottom of the intake runner and running a threaded shaft, which is attached to the “vane” ( a piece of thin curved metal, much like what’s in torque converters), and after tightening, silicone. You have a flow bench, put your finger in front of the intake runner (or a popsicle stick) to see the difference. Ultimately you’re wanting to direct flow to the short-side radius, heighten the top of the runner, to streamline flow into the combustion chamber and create a better “mix” ( volumetric efficiency) in the chamber.
Have thought about doing that for years, you're the first I've heard of using vanes. Are you talking about a carbureted setup and if so, what does the fuel do to the silicone? On the old Buick heads we have been taught to leave the short side radius alone, BTW.
I've been eyeing a set of those DNA heads for awhile now and after seeing this video I think I'm going to get a set they'll be perfect for my new engine I'm collecting parts for.
You are close to right on. Many people complain about china this and that, problem is MOST of things in this world are made in a handful of factories. Most "built in USA" heads are actually cast in China and assembled here. the flip side is China doesn't care so you give them a price point and they try and make it and by try is make a part that matches the price point. With that said, who thinks all these head companies, including Blueprint, ATK, AFR (on some budget lines) all have a foundry employing hundreds of workers, safety, HR, OCHA, etc. to make head castings for anything under 1K a piece? Not enough volume in sales for all the different combinations and risk involved. There are diamonds in the ruff along with, I don't know, using a product for its intended purpose. You can't really expect to get 800HP out of a SBC with $300 heads but you should be able to expect an easy 300 - 350hp with the right set up. I say this because almost weekly someone opens their mouth while I not so politely tell them they are an idiot. Can not count the lets slam a .600 lift in a stock lower end with out of the box speedmaster heads (usually for a flat tappet cam set up NOT a roller), drop a jegs brand dual plane and some 850 double pumper some guy rebuilt last year and get made at the parts because it runs worse then stock.
Awesome!! Perfect timing was just about to order some upgraded springs for my vortec heads!! So I'm super excited for this giveaway!! Can't wait!! Thanks for all you do!! Luv your channel!!!
I bought a set of the $190 bare “200 cc” eBay heads, they look more like the AFR enforcer than the DNA head does, even have the Vortec manifold bolt holes, they’re absolutely identical to the AFR head...
@@cuttersperformance Yep they’re all the same head, I’d like to know the real story behind them. I think you’re right, I think they’re rejects from the big name companies like Dart and AFR...
Good information video! I noticed the Cayuga starting line in your intro, fellow Canuck! Our 383 build up on wife's 70 Nova will sport a set of enforcer heads. Just got our Howards retro roller and max effort lifters delivered today, getting ready for assembly. Hoping for 400+ hp @10.5:1 compression.
Good eye! And yes sir 🇨🇦 . A 10.5:1 383, enforcer heads, even with a mild roller cam you should have no issues at all hitting 400 hp. Howards have some reallly good shelf grinds, what cam did you pick?
@@cuttersperformance Hey, I got the 110265-12S. I went for a little more lobe separation @ 112° as we are considering fuel injection. It's my first roller (that I've built) and looking forward to taking advantage of quick high lift, without the duration bleed-off. Hope it all works well together!
I love the older engines with the newer heads. Basically anything from the D port 113 corvette heads on up. The old camel backs and 882 heads were Heavy gas guzzlers that only flowed well after some serious work. That said I have a four bolt truck block 355 with unshrouded 202 190 valves , Ported 882 heads at 9.5:1 screw in studs and guide plates and bronze guides. That’s only because I did them myself twenty years ago and they are still like new and run really well. Vortec and 113s are better truck heads though. I also have a 327 with camelbacks just for nostalgia. I have one Chevelle, one Xj6c jaguar, and one truck but I seem to have collected and built at least a dozen engines for some reason.
@@matthewcromwell1969 I used the dart SS heads similar to iron eagle heads mine are 185cc intake flow with 65cc combustion chambers and gives me around 50+ hp over stock heads probably a little more then 50 my motor dyno is 400hp at the crank and my cam is mild with a 502 intake lift and a 498 exhaust lift
@@jonathanlawson4667 that sounds awesome. I have a stock 350 in my 1972 GMC all original with 38,000 miles. I put a small lunati cam, 454 lift 276/286 advertised duration 221/231 at .050 112 lobe separation. It is only rated at 175 hp stock. I am also putting headers, aluminum intake and holey 4 barrel on with the heads. The truck heads suck, they come with 1.72 intake and 1.50 exhaust valves. No power at all. I am looking to get a bunch more horsepower from the heads. I have heard a lot of good stuff about them.
@@matthewcromwell1969 yeah that cam isn't going to do you any good at all unless you change the heads so they can flow enough for the new cam but dart has many different affordable options
2023 update: these heads are currently running $243 as of 12/27/2023. Pricing history shows they fluctuate (like most Amazon stocked items) between $203 and $260. So if you're thinking about playing with these, keep an eye out for the lower end of the scale.
For the Camaro and Nova 68-81 The Hooker race car headers (weld on collectors) for the application gets around the angle plug heads no problem even with the 1 7/8” primary’s..
Interesting that the dna head out flowed the arf on exhaust and rather close on intake for the money seems like a win. Congrats on 4k+ subscribers with all the good content you're going to grow subscribers fast. Looking forward to the giveaway I have some 906's that need a upgrade 😉
I had a feeling these DNA heads were quality control biproducts from another dealer. I would love to have a set of those spring kits for my 85 third gen build.
🤯 very nice flow numbers for such a cheap head. I'd imagine a simple cleanup would have them beating the afrs everywhere. thanks for sharing the numbers. 👊🤘😎
@@jr78racer i don't think the casting will crack But I think the guides may wear out fast but who knows I had a guy email me telling me he has a ton of miles on a set of the ebay heads
The AFR enforcer is a great bang for the buck head , I believe Skip White sells this same casting as an NKB head . I am putting a set of these on a mild 383 . if I were to complain about anything it would be the deck thickness . AT .450 it's seem a little thin , Not that I have any experience warping aluminum heads.
I just got a set of patriot freedom head's aluminum for $300 ,202 ,160 was thinking about getting them looked at and port work like to make a 500hp small block
Help a Cheap Skate out ! ! ! I have a '55 2 door Post and a Disco Corvette that needs some motivation . . . a Beehive setup would help get either project closer to Drivable . . .
I'm interested in knowing more about the DNA heads. Only info I have found so far says the valves are .100 longer. Could use the spring kit on the 96 Vortec 350 I'm wanting to build for my truck. Thanks
Another great video! Now if you look at the average flow numbers of both heads they're within 3.3 CFM. It was 196.728 average CFM for the DNA head and 200.028 CFM for the AFR head.(from what I could read on my phone, they might be slightly different if someone can see them better?) You can't overlook or underestimate the low lift numbers because the other head has better high lift numbers. Unless you're running a very high lift cam, you probably won't even hit the highest lift numbers once but the low lift numbers will always hit twice once on the way up and once on the way back down. If someone were to use a cam with .500" lift using the average flow numbers then the DNA heads would average 176.5 CFM and the AFR heads are 176.4 CFM. So if a larger cam or porting aren't in the budget, the DNA heads would be the ticket because both sets of heads would probably make right around the same HP with a. 500" lift or lower cam. How would someone enter the giveaway, by just being a subscriber? (Which I have been for a couple months when I seen one of your videos for the first time)
For me I would go the bare DNA heads and a valves/spring/retainer pack from competition products. Then an afternoon with 60 grit cartridge rolls in the ports. Actually I would probably get carried away and port them a little.
Here's a tip... Just clean up the exhausts, shape the lower side and the area flowing out with a match port, especially at the bottom. I'm not into 5 angle valve jobs, because 3 angles with blended top and bottom angles flow better. You may also want to increase the throat to 75 to 80% if you have a lift near .600. On the intake side. Match port the runners in an inch or so, blending into the existing ports flow. Clean the rest of the runner up. 3 angle valve job blended and you are good to go. If you have some lift, hog the bowls to the flash then clean the flash area around the guide, then round your guide. It's a weekend project if you don't do this for a living. I'm a machinest and it takes me an a day. If you can spare a few CC's unshroud the valves in the chamber and at the plugthreads. It will cost you 2 to 3 CC's but worth It On the flow results I've seen. If your not going vortex, remove the upper lip at the top of the intake gasket. The intake side are based on vortecs. I can speculate on the exhausts. Heres something that they don't tell you. They take 16 + .100 valves.
That actually happens a lot the foundries/ factory that cast and make the big name stuff actually have the rights of he product and can and do sale it to other companies.as far as the afr heads your getting there ports work and parts and the same raw casting.
Where are you going to find the American valves at anyways. Manley and that company begining with f? Elgin makes a makes a nice street and race option. I use both ss styles with out a problem. I'd stay clear of the rest honestly, because they are the same valve with 1000 generic names. I've seen plenty of valves such as pro... That were off angle and needed a valve job new. You could use GM Valves, Eaton has made most of thier valves for years. They have several factories and guess where they are? Avoided anything from Indonesia like pro...
Your very good on heads i got a 96 vortec 350 im wanting to build i watch all your videos i work 70hrs a week for 8 yrs working 2nd and 3rd shift help a brother out im 52 and never see my youngins youngist is 13 loves working on all my old stuff i have a 302 sbc with 291 heads aint got time to rebuild it or money 👌
i ported and polished a set of procomp 205 -202-160 heads and ill tell you i dont know what they flow but my 358 runs real strong im talkin high 10s strong in a 78 malibu i had a 1190 camaro and this car is much quicker.my opinion you port any 202 head or bigger you will produce some power
I love my AFRs granted they are the comp ported version, but they are so well made and they perform so well, I had dart pro 1 Cnc before changed to AFR and we gained 85hp with the same port size 220-220cc both fully CNCed, the AFR just did its job so much better, I recommend them to anyone I can, yes the price is steep, but the enforcer is the new budget on the block, I trust AFR 100%
There's other factor like cc of the head when making a choice. Velocity is very important also. That said I'll take the AFR heads all day sure vs a cheap head like this. If it's a mild build and not really beating on it I guess they're ok and have a place. My little sbc with AFR 220cc makes 637hp on pump 93 with a hydraulic roller on a mild tune. Although anyone looking for the baddest 23 degree sbc head BES ALL PRO RR245 are where it's at. From .700 thur 1.000 lift they flow about 370/292. They only start at 6,700 though lol. Nice video by the way.
The AFR enforcers are a version of same chinese castings you can buy from china though afr does replace the valve guides and regrinds the seats before reselling
If you cleaned the cheap heads up with porting, valve job, seats, springs etc they prob be ok maybe? I only sag this cause were i live afr heads bout 4k ish. I dont think i would risk it tho.
I work in the food industry some will be labeled Great value and some high-dollar uppity brand from places like Roth's or Publix with a fancy label. To be honest the ones with the highest standards are Kirkland brand from Costco.
@@CORNDODGER duh. Where else? China doesn't mean bad quality, they will attempt to meet any price point. That said people act like, say Sony, has nothing but top quality... lol
I could use them springs myself. Great video man. You will capture a BIG audience aiming for the hot rodders on a very limited budget. Soon to be 100k no doubt.
Wow thanks for that man, thats what I'm going for. Trying to show guys ways they can do things themselves, budget builds are fun and great for learning Cheers!
Considering vortec heads are around 180 intake and 150 exhaust, I’d say it’s definitely worth the $180 to upgrade to the Chinese head. Especially if you’re running pre vortec heads
Please list the costs of each set of heads in the future.Some guys,such as myself,would like to compare them price wise.So they could decide if the extra flow is worth the money on there combo.Thanks!
Hey your description said to email you about a kit to get more lift out of a vortec head just wondering how to reach you or for a link possibly. Your videos are awesome man I've learned so much I'd never of thought about
Great video as always. I am getting ready to redo my vortec heads in a couple of months. Your beehive springs would be a fantastic addition. Keep up the good work. Thanks
Have you seen the fulltwin turbo kit on Amazon, by MMI Motorsports? Days it's a complete kit, EVERYTHING is included...... It's $1500 for 5.7 .... I think I looked up for Vortec 5.7 ..... Do you have a turbo kit you recommend?
@@cuttersperformance been there done that. They must be cast from vortex on the intake side. The only difference may be that they use very coarse barr sand to cast these. I think it's the type that goes into 3500 concrete. Lol
They both likely come from the same factory and from the same casting mold. The AFR heads are just "higher QC" and often finish machined in the USA. When you have things made in China and order say, 30000 units, the factory will make 700000, about 300000 will pass minimum QC, the rest are "seconds" and sold for less on the market.
True I work their . Spot on 😆 we get them from China and we finished them in the USA. And some parts are quality . Depending on the new workers they rotate . I like this work but to bad we can't keep good workers . So most people order heads and some take many months or years to get your parts. They keep losing employees and not enough productions
Been waiting for this video, finally got the notification and was in the middle of a work meeting 😂 attention went right out the window. I'm running your vortec spring setup on a set of home ported vortecs hopefully going to have the engine together and dynoed in the next few weeks! Great vids 👍
Eric Weingartner has proven the flow. He measured 299.2 @ .600" on his bench which is pretty conservative. It was not a marketing number on a Superflow 600 bench. I've done a few SBC's with the fully CNC finished AFR 195 and there's nothing in that size out there that makes the same power unless you port it - and then it's not a 195 anymore...
Theres no doubt that the machine work and components are better in the brand name heads, but oftentimes, even they have flaws. But yes, there must be some serious profit margins
@port nut I live in Canada, so everything is basically double the price for me after the exchange rate, massive shipping costs, duty and taxes, so 4000+ for a set of good heads isnt going to fly with me. Besides, I like a challenge without spending too much. And the price of these is cheaper than most guys want for worn out fuelie heads, haha...
Those are two different port designs on the same casting. My eBay heads look just like the afr ,only 11/32 valve stems. I think I have seen three different port designs on the same casting. Afr definitely gets the top choice castings.
Thanks! I've been considering getting a set. I'm very low budget and don't want to scrimp and get burned. Kind of like buying tools, knowing where you can save money on certain things and where you really do need to spend the money. I really enjoy your channel. Thanks again!
@dirtyburd71 hopefully they are still decent, The parts nowadays have quality issues with most brands. The DNA heads worked well for me for a budget build, 30+ dyno pulls, and even 5 or so pulls with boost
Got a part number for the knock off heads I'm in need of a set! I'd like to replace my 186. 300 hp heads and go aluminum and maybe a hydraulic roller in my ole tow truck
Thanks for checking out my channel and subscribing. Both are great options, maximum power and if budget allows go for the enforcers. If you dont planning on running a large cam and building more of a cruiser with a it of power then vortecs work great aswell
Hey, 2 part question... Bought a blueprint crate motor w vortec heads BP35512CTI1. Heads r different casting 906 (P) side & 062 (D) side, any downside? Cam specs show .495 / .502 lift 221-226 duration 110° LSA, heads appear to have no machine work to accept rhis set up. Any idea on how this is accomplished without valve train issues? Thanks.
No differece in 906 and 062 as long as the 906 doesn't have the press in exhaust seats. That lift cam be accomplished with the right springs and retainers. I can get .580 with my beehive kit with no machining
@cuttersperformance The set I have, I got from Amazon to do a vortec dyno comparison. I bought them bare, and when I went to lap the valves the seat line was so high it was almost off the valve. Maybe just this pair 🤷♂️
Could be that they're from the same molds in the same plant, the AFRs have a better heat treat. Or maybe DNAs are just cosmetic blem castings rejected by AFR.
Sand papper roll the DNA Motoring Heads , Gasked match them . use a Neck Down Valve . & . it looks like the DNA Motoring Heads would Out perform the Afr heads .
Yeah exactly! I got these as bare castings but im still worried about the seats and guides. I'm adding American made valves, springs and retainers and we shall see
The biggest problem with the China heads is the hardware. I had a buddy order a different set for a BBC. Springs were supposed to have a seat pressure of 135. It was 80... Absolute crap. PAC springs and Argentinian valves. That's where it's at.
You ever consider flowing a set of the jegs (profilers)? I'd be curious if there is a difference compared to the real deal. My machinist steered me to the profilers over the AFRs... he said dollar for dollar and for what I was going to do they would be the better value. At the time it was a 600$ difference and I used that difference toward other things I needed. No regrets there lol.
@@cuttersperformance makes me feel better about the 195s on my vette lol. I know guys have had issues with the raised exhaust port because the bolt holes aren't the normal raised style but my headers fit no issue. I'm just choking it with a crap intake at the moment.
@@cuttersperformance Mines a crossfire but stock bottom end... so flat tops, thin head gasket, 195s, ported intake. Compression ratio I guesstimate around 10:1. The pistons are hard to cc in the block. I intended to do an overbore but there was still cross hatching in the bores so I said screw it. It's a 224/230 roller from comp. It moves out pretty hard anywhere below 4400. If you've ever seen a stock crossfire intake port... thats why. And when I grenade this I have an 880 block 383 ready to go lol.
I have not been able to get a set for a decent price lately But I do have some 305 vortec heads which are actually similar (they even have the swirl ramp) Porting and flow videos coming up
@@cuttersperformance I have a pair of 193 heads I’d be willing to trade ya for some of your stuff! I’m doing a head upgrade from them currently and have the engine out. I’m debating vortec (in which case I’d get your spring kit), or a cheap aluminum combo. Want me to contact you with my info?!
@@cuttersperformance Ah. Was interested to know why you didn't choose Ferrea. When you said US made valves, I thought you were choosing Manley or Victory.
With the heads as is, I'd guess that the AFRs might respond to a cam with longer exhaust duration, but it's also possible that the I/E flow ratio could already be optimized. AFR is not exactly new to this game.
The I/E ratio is very dependent on the CR so AFR could not 'optimize' this unless the CR was known for each and every build the heads could be used on.
Dude I want to thank you for taking the torch on the older generation block the information you're putting out is spot-on, people are going to realize how valuable this knowledge is, thanks again your friend RDO
Wow thanks Roger I really appreciate the positive feedback! Cheers Brother
Multiple companies use these heads skip white , assualt racing , rcp ect. There's a big thread about them on the third gen forum buget assualt racing head. They actually look just like dart platinum heads too. My set has either the vortec or early version intake bolts . I had choice of angle or straight plug and with or with out steam holes when purchased. They cost allot more than 186$ in 2016. Solid head though. I port matched a 1266 gasket to my single plane efi intake. My heads are raised runner ports. I bought mine bare too. I lapped all my valves . I own a machine shop. In the tread I mention I put a set on a surface plate and belive they were flat with in .0004 ten thousandths . I've had my set on my gen 1 sbc 383 with a s488 turbo since 2016. No issues.
So then whose heads did you buy? What seller?
Yes, so many people are all about them flow numbers, but that's just a small part of the story.
Port velocity is even more critical when it comes right down to it!
It's a combination of both.
Like Smokey always said, "You don't race flow benches". He also said, "Only you can prevent forest fires".
Phone numbers are often make more power on the dyno but when it changes gears the port velocity gives way down with it bigger port
More cc will take over at high rpm,,, port velocity becomes "less important"
this is 90s thinking all that matters is getting cfm into the chamber, which larger heads can. I've been running 195cc heads on 5.0L sbf and have yet to see a smaller high velocity head (like ported E7 head) outperform me in the 2,000-4,000 rpm range
THOSE CHEAP HEADS FLOW PRETTY GOOD OUTA THE BOX, A LITTLE CLEAN UP AND A GOOD VALVE JOB,PORT MATCH AND THERE GOOD TO GO
If I had a use for them I would order a set in a minute. Interesting thing though, the heads found on the 4.3L v6 Vortec motor found in Chevy light duty trucks flow quite a bit out of the box and with a clean up will flow over 300 CFM easy and that's more that the aftermarktet heads found for a Grand National or the Buick Stage 2 heads. The heads from GM parts direct, are cheap. Only $168 for a pair, that is crazy and they are made with very high quality and engineering. The trade off, well you have to do a lot of custom work to swap the 4.3l v6 vortec into a Grand National for instances.
@@charleslowe522 4.3 heads are Chevy heads. Grand Nationals use a 109 cast BOP 3.8 block. They heads, intake, etc won't interchange. Two completely different animals.
Especially when you can use a Cutlass body or Buick any G body
@@charleslowe522 thanks for sharing! I can’t find the heads you mentioned for $168 for the pair. Could you share a link? I would love to get a replacement set for that price. For my GMC Safari =D
Damn, back in the day, we couldn't have even imagined getting a head as good as those DNA heads for anywhere near those prices. Holy hell the world has changed - haven't priced aftermarket aluminum heads since the mid-90's for SBC.
Super simple nowadays. China just takes a good design, and illegally copies it. Then you find them for dirt cheap on Amazon, or ebay. They save themselves from r&d by just stealing the design.
@@warhorse58gt Since they make most of them for us, we either invest in America, or continue to lose out to China. I'm not condoning theft, but it would be harder to steal if China wasn't casting a large percentage of our parts to begin with.
@@warhorse58gt that does happen.. a lot. But its just as common for American companies to take their designs to China and have them made there.
The glut of affordable stroker kits over the last few decades are 100% due to companies importing Chinese cranks.
No lie.
Yeah I will never save a buck to buy foreign stuff if I know they were copied from American companies
I’m glad to see some up to date videos about vortec stuff in a time where the world has gone LS swap crazy. Just dropped a set off vortec head on my Malibu and I’m currently searching for a good full roller vortec engine for my camaro
I hear you everything is LS these days. I have a marine vortec in my truck. I have an LS to swap in, but gonna leave it sbc. I picked up a hardly used Weiand 144 with the vortec base in a deal with a friend. I am going to put it on and slip in a blower cam.
It's already a roller cam engine so should make for a nice setup. Also running it on E85 to keep charge temps down. These little blowers love E85 from what I am finding.
A lot of people LS swap just because everyone else is they don’t really have a reason
I picked up a set of “Deepmotor” aka Chicom copies for $380 190cc int. runners & 64cc chambers and I did have to clean them up a bit (they’ll run fine I’m just ocd) but I picked up more power than $400 should have gotten me. I’d rather buy from an American company but I’m not wealthy so these domestic producers like AFR or Edelbrock etc... need to come out with actual budget heads if they want to retain customers that can’t afford their heads even when they’re used let alone new
Check the thickness of the upper wall, inside the intake side, on the short side of the valve radius. We made a lot more horsepower with a higher top wall there. It’s even more pronounced with 351 Cleveland heads for fords, BUT, ( on Cleveland heads) because of the volume inside the runner, it’s best to put vanes inside the runners. This is done by drilling a hole in the bottom of the intake runner and running a threaded shaft, which is attached to the “vane” ( a piece of thin curved metal, much like what’s in torque converters), and after tightening, silicone. You have a flow bench, put your finger in front of the intake runner (or a popsicle stick) to see the difference. Ultimately you’re wanting to direct flow to the short-side radius, heighten the top of the runner, to streamline flow into the combustion chamber and create a better “mix” ( volumetric efficiency) in the chamber.
Have thought about doing that for years, you're the first I've heard of using vanes. Are you talking about a carbureted setup and if so, what does the fuel do to the silicone? On the old Buick heads we have been taught to leave the short side radius alone, BTW.
I've been eyeing a set of those DNA heads for awhile now and after seeing this video I think I'm going to get a set they'll be perfect for my new engine I'm collecting parts for.
They flow well, but not sure about longevity
Dont use Chinese crap buy brodix
You are close to right on. Many people complain about china this and that, problem is MOST of things in this world are made in a handful of factories. Most "built in USA" heads are actually cast in China and assembled here. the flip side is China doesn't care so you give them a price point and they try and make it and by try is make a part that matches the price point. With that said, who thinks all these head companies, including Blueprint, ATK, AFR (on some budget lines) all have a foundry employing hundreds of workers, safety, HR, OCHA, etc. to make head castings for anything under 1K a piece? Not enough volume in sales for all the different combinations and risk involved.
There are diamonds in the ruff along with, I don't know, using a product for its intended purpose. You can't really expect to get 800HP out of a SBC with $300 heads but you should be able to expect an easy 300 - 350hp with the right set up. I say this because almost weekly someone opens their mouth while I not so politely tell them they are an idiot. Can not count the lets slam a .600 lift in a stock lower end with out of the box speedmaster heads (usually for a flat tappet cam set up NOT a roller), drop a jegs brand dual plane and some 850 double pumper some guy rebuilt last year and get made at the parts because it runs worse then stock.
Awesome!! Perfect timing was just about to order some upgraded springs for my vortec heads!! So I'm super excited for this giveaway!! Can't wait!! Thanks for all you do!! Luv your channel!!!
Hell yeah! I've hit 4k this morning so look out for my next video for a chance to win the kit! Excited for one lucky vortec lover
Cheers!
Sweeeeeeeeet
@@cuttersperformance how much is the ls 6 spring kit
I bought a set of the $190 bare “200 cc” eBay heads, they look more like the AFR enforcer than the DNA head does, even have the Vortec manifold bolt holes, they’re absolutely identical to the AFR head...
Yeah I've seen those to! Also exactly like the BluePrint Racing heads aswell
@@cuttersperformance
Yep they’re all the same head, I’d like to know the real story behind them. I think you’re right, I think they’re rejects from the big name companies like Dart and AFR...
these are what I bought as well... got mine from AT racing and I believe they are the very same castings as AFR buys from china for the enforcers.
Rough intake runner is a good thing on a street motor
The DNA head looks to be better for turbocharger use with the higher exhaust flow.
My thoughts exactly and I will be running a 355 with these heads first NA then turbo on the dyno in a few weeks
Good information video! I noticed the Cayuga starting line in your intro, fellow Canuck! Our 383 build up on wife's 70 Nova will sport a set of enforcer heads. Just got our Howards retro roller and max effort lifters delivered today, getting ready for assembly. Hoping for 400+ hp @10.5:1 compression.
Good eye! And yes sir 🇨🇦 . A 10.5:1 383, enforcer heads, even with a mild roller cam you should have no issues at all hitting 400 hp. Howards have some reallly good shelf grinds, what cam did you pick?
@@cuttersperformance Hey, I got the 110265-12S. I went for a little more lobe separation @ 112° as we are considering fuel injection. It's my first roller (that I've built) and looking forward to taking advantage of quick high lift, without the duration bleed-off. Hope it all works well together!
You had me at STICKERS!
Great video, just subscribed
Sticker HP!
@@cuttersperformance lol True 😁👍
I love the older engines with the newer heads. Basically anything from the D port 113 corvette heads on up.
The old camel backs and 882 heads were Heavy gas guzzlers that only flowed well after some serious work.
That said I have a four bolt truck block 355 with unshrouded 202 190 valves , Ported 882 heads at 9.5:1 screw in studs and guide plates and bronze guides. That’s only because I did them myself twenty years ago and they are still like new and run really well.
Vortec and 113s are better truck heads though. I also have a 327 with camelbacks just for nostalgia. I have one Chevelle, one Xj6c jaguar, and one truck but I seem to have collected and built at least a dozen engines for some reason.
I put dart heads on my build and I absolutely love them
I am getting ready to order the Dart Iron eagle heads. What heads did you get and how much improvement did you see over a stock head?
@@matthewcromwell1969 I used the dart SS heads similar to iron eagle heads mine are 185cc intake flow with 65cc combustion chambers and gives me around 50+ hp over stock heads probably a little more then 50 my motor dyno is 400hp at the crank and my cam is mild with a 502 intake lift and a 498 exhaust lift
@@jonathanlawson4667 that sounds awesome. I have a stock 350 in my 1972 GMC all original with 38,000 miles. I put a small lunati cam, 454 lift 276/286 advertised duration 221/231 at .050 112 lobe separation. It is only rated at 175 hp stock. I am also putting headers, aluminum intake and holey 4 barrel on with the heads. The truck heads suck, they come with 1.72 intake and 1.50 exhaust valves. No power at all. I am looking to get a bunch more horsepower from the heads. I have heard a lot of good stuff about them.
@@matthewcromwell1969 yeah that cam isn't going to do you any good at all unless you change the heads so they can flow enough for the new cam but dart has many different affordable options
@@jonathanlawson4667 yeah I am changing the heads and intake and carburetor and putting headers on it.
Love these videos. I used the vortec heads because of you and I'm glad I did it really woke up an old 350 from the early 80s
Hell yeah! Glad to hear that man!
2023 update: these heads are currently running $243 as of 12/27/2023. Pricing history shows they fluctuate (like most Amazon stocked items) between $203 and $260. So if you're thinking about playing with these, keep an eye out for the lower end of the scale.
Dude once again excellent video
For the Camaro and Nova 68-81 The Hooker race car headers (weld on collectors) for the application gets around the angle plug heads no problem even with the 1 7/8” primary’s..
Awesome detailed video! I'm surprised how well them cheaper heads flow! Have been looking at buying a set thanks
Interesting that the dna head out flowed the arf on exhaust and rather close on intake for the money seems like a win. Congrats on 4k+ subscribers with all the good content you're going to grow subscribers fast. Looking forward to the giveaway I have some 906's that need a upgrade 😉
Thanks brother! Keep a eye out got the giveaway video coming up
@@cuttersperformance will do, and thank you again for very useful and informative information 👍
I had a feeling these DNA heads were quality control biproducts from another dealer. I would love to have a set of those spring kits for my 85 third gen build.
They do look better than I thought, not sure about longevity but I guess we wil find out
@@cuttersperformance i was concerned about the steel springs digging into the aluminum head overtime, if thats even a thing.
@@jeremys924 yeah there should be a hardened shim or spring seat under the spring to prevent that
Congratulations on reaching 4k man , keep the great vids coming 👍🏻👍🏻
Thanks bother!
Dude I’m glad yt put this in my feed. About to drop a 350 in my truck and been deciding on heads, prob just go this route.
Looking to replace my 224cc heads from 68 impala with some heads near the same cc's
Look like the same castings as my Assault heads that Lloyd Elliot ported for me. ~500 hp 383 with a mild 218/228 cam.
🤯 very nice flow numbers for such a cheap head. I'd imagine a simple cleanup would have them beating the afrs everywhere. thanks for sharing the numbers. 👊🤘😎
Yeah I was abit surprised too! But alot of mixed reviews on longevity
@@cuttersperformance longevity for guides and seats or cracking issues?
@@jr78racer i don't think the casting will crack
But I think the guides may wear out fast but who knows
I had a guy email me telling me he has a ton of miles on a set of the ebay heads
@@cuttersperformance for the price, I'd just put better guides in them and send it
@@jr78racer i like your style man 😎 👌
The AFR enforcer is a great bang for the buck head , I believe Skip White sells this same casting as an NKB head . I am putting a set of these on a mild 383 . if I were to complain about anything it would be the deck thickness . AT .450 it's seem a little thin , Not that I have any experience warping aluminum heads.
I just got a set of patriot freedom head's aluminum for $300 ,202 ,160 was thinking about getting them looked at and port work like to make a 500hp small block
Of course I come across this video a few days 'after' paying to have some vortec 906's mag'd before a rebuild.
Help a Cheap Skate out ! ! ! I have a '55 2 door Post and a Disco Corvette that needs some motivation . . . a Beehive setup would help get either project closer to Drivable . . .
Look out for the next video!
190cc? man i remember those days... been a long time ago tho...
ya'll need to try the twisted wedge 255's for smoll block
I’ve seen 420+ cubic inch small blocks with a CNC ported 195 AFR that work damn well. 👍🏻
I'm interested in knowing more about the DNA heads. Only info I have found so far says the valves are .100 longer. Could use the spring kit on the 96 Vortec 350 I'm wanting to build for my truck. Thanks
Nice vid. appreciate the info. wanted to get Aluminum anyways.
Will await followup video on their condition after use...
Another great video! Now if you look at the average flow numbers of both heads they're within 3.3 CFM. It was 196.728 average CFM for the DNA head and 200.028 CFM for the AFR head.(from what I could read on my phone, they might be slightly different if someone can see them better?)
You can't overlook or underestimate the low lift numbers because the other head has better high lift numbers. Unless you're running a very high lift cam, you probably won't even hit the highest lift numbers once but the low lift numbers will always hit twice once on the way up and once on the way back down.
If someone were to use a cam with .500" lift using the average flow numbers then the DNA heads would average 176.5 CFM and the AFR heads are 176.4 CFM.
So if a larger cam or porting aren't in the budget, the DNA heads would be the ticket because both sets of heads would probably make right around the same HP with a. 500" lift or lower cam.
How would someone enter the giveaway, by just being a subscriber? (Which I have been for a couple months when I seen one of your videos for the first time)
Nice work man!
Look out for the next video for the giveaway details!
Port Nut- where are they getting “Foamy” I’ve done 3 sets of these type heads (LPC HEADS) I have not encountered this.
For me I would go the bare DNA heads and a valves/spring/retainer pack from competition products.
Then an afternoon with 60 grit cartridge rolls in the ports.
Actually I would probably get carried away and port them a little.
Here's a tip... Just clean up the exhausts, shape the lower side and the area flowing out with a match port, especially at the bottom. I'm not into 5 angle valve jobs, because 3 angles with blended top and bottom angles flow better. You may also want to increase the throat to 75 to 80% if you have a lift near .600. On the intake side. Match port the runners in an inch or so, blending into the existing ports flow. Clean the rest of the runner up. 3 angle valve job blended and you are good to go. If you have some lift, hog the bowls to the flash then clean the flash area around the guide, then round your guide. It's a weekend project if you don't do this for a living. I'm a machinest and it takes me an a day. If you can spare a few CC's unshroud the valves in the chamber and at the plugthreads. It will cost you 2 to 3 CC's but worth It On the flow results I've seen. If your not going vortex, remove the upper lip at the top of the intake gasket. The intake side are based on vortecs. I can speculate on the exhausts. Heres something that they don't tell you. They take 16 + .100 valves.
None of them have exhaust crossover holes. Us guy's on the east coast need heat in the winter just warming up.
Another awesome video! I feel that it was especially made for budget minded people like myself. Thanks.
That actually happens a lot the foundries/ factory that cast and make the big name stuff actually have the rights of he product and can and do sale it to other companies.as far as the afr heads your getting there ports work and parts and the same raw casting.
I found that to be pretty darn interesting myself. AFR basically does what WE would do ourselves. Excellent vid!
Your valve spring kit will go good on my Vortec heads that are in the shop getting those larger exhaust valves 👍. Another great video
Look out for the next video for the giveaway!
I like those el cheaper heads for that price I'd make a trip to harbor freight and get there porting kit and clean those runners up very interesting!
Exact same thing that occurred to me as well! American valves & springs & some port polishing & they're be good to go.
Where are you going to find the American valves at anyways. Manley and that company begining with f? Elgin makes a makes a nice street and race option. I use both ss styles with out a problem. I'd stay clear of the rest honestly, because they are the same valve with 1000 generic names. I've seen plenty of valves such as pro... That were off angle and needed a valve job new. You could use GM Valves, Eaton has made most of thier valves for years. They have several factories and guess where they are? Avoided anything from Indonesia like pro...
Not being concerned with flow numbers. What was the cost of Complete, valves, springs, retainers, etc, including any machine work? Thanks.
With the cost of the DNA heads going up is no so much of a deal anymore. Check out skip white NKB heads or the AFR enforcers
Your very good on heads i got a 96 vortec 350 im wanting to build i watch all your videos i work 70hrs a week for 8 yrs working 2nd and 3rd shift help a brother out im 52 and never see my youngins youngist is 13 loves working on all my old stuff i have a 302 sbc with 291 heads aint got time to rebuild it or money 👌
i ported and polished a set of procomp 205 -202-160 heads and ill tell you i dont know what they flow but my 358 runs real strong im talkin high 10s strong in a 78 malibu i had a 1190 camaro and this car is much quicker.my opinion you port any 202 head or bigger you will produce some power
I love my AFRs granted they are the comp ported version, but they are so well made and they perform so well, I had dart pro 1 Cnc before changed to AFR and we gained 85hp with the same port size 220-220cc both fully CNCed, the AFR just did its job so much better, I recommend them to anyone I can, yes the price is steep, but the enforcer is the new budget on the block, I trust AFR 100%
Great info Pat.! morning coffee and flow numbers haha!
Love the info! I've learned a lot from your videos!
Thank I appreciate the feedback!
Amazing how well the exhaust port flows in the Chinese head...
Yeah very surprised by that aswell
Throat diameter, seat profile, port volume and short turn as cast will determine your flow figures and difference between the two types of heads
There's other factor like cc of the head when making a choice. Velocity is very important also.
That said I'll take the AFR heads all day sure vs a cheap head like this. If it's a mild build and not really beating on it I guess they're ok and have a place. My little sbc with AFR 220cc makes 637hp on pump 93 with a hydraulic roller on a mild tune.
Although anyone looking for the baddest 23 degree sbc head BES ALL PRO RR245 are where it's at. From .700 thur 1.000 lift they flow about 370/292. They only start at 6,700 though lol. Nice video by the way.
The AFR enforcers are a version of same chinese castings you can buy from china though afr does replace the valve guides and regrinds the seats before reselling
Sweet, would love the spring kit! I'm building/porting a set of iron Lt1 heads at the moment.
Looks like the short turn could use some work on the AFR, not liking how it levels off at 500.
Awesome! Just what I need for my Vortec heads!! 🤘👍
Would love to see the enforcers on actual dyno on a 383 or so to see real horsepower numbers. Nobody seems to have done one yet.
We currently i am using a DNA aluminum head (voted by the viewers) on a 355 SBC. Its basically exactly the same casting as the afr head
If you cleaned the cheap heads up with porting, valve job, seats, springs etc they prob be ok maybe? I only sag this cause were i live afr heads bout 4k ish. I dont think i would risk it tho.
there is a 90% chance those heads are made in the same place lol
CHYNA
I work in the food industry some will be labeled Great value and some high-dollar uppity brand from places like Roth's or Publix with a fancy label. To be honest the ones with the highest standards are Kirkland brand from Costco.
🎯
Truth.
@@CORNDODGER duh. Where else? China doesn't mean bad quality, they will attempt to meet any price point. That said people act like, say Sony, has nothing but top quality... lol
I could use them springs myself. Great video man. You will capture a BIG audience aiming for the hot rodders on a very limited budget. Soon to be 100k no doubt.
Wow thanks for that man, thats what I'm going for. Trying to show guys ways they can do things themselves, budget builds are fun and great for learning
Cheers!
Considering vortec heads are around 180 intake and 150 exhaust, I’d say it’s definitely worth the $180 to upgrade to the Chinese head. Especially if you’re running pre vortec heads
Could you please check the New 32Valve conversion heads for Chevy small Blocks?
Great Video Pat, I have a set of the DNA Heads and I want to run the Vortec style air gap intake I have, what gaskets are best? ???
Thanks
The difference in the intake is probly the shape of the ports
Please list the costs of each set of heads in the future.Some guys,such as myself,would like to compare them price wise.So they could decide if the extra flow is worth the money on there combo.Thanks!
Hey your description said to email you about a kit to get more lift out of a vortec head just wondering how to reach you or for a link possibly. Your videos are awesome man I've learned so much I'd never of thought about
Great video as always. I am getting ready to redo my vortec heads in a couple of months. Your beehive springs would be a fantastic addition. Keep up the good work.
Thanks
This video was awesome, thanks for the comparison video. I’m gunna get some dna heads and do a port job and send it
Have you seen the fulltwin turbo kit on Amazon, by MMI Motorsports? Days it's a complete kit, EVERYTHING is included...... It's $1500 for 5.7 .... I think I looked up for Vortec 5.7 .....
Do you have a turbo kit you recommend?
I would really like to see the DNA laid over the vortec stock heads
Yeah I can do that man, I will try to remember to add that in the vortec porting flow video coming up
@@cuttersperformance been there done that. They must be cast from vortex on the intake side. The only difference may be that they use very coarse barr sand to cast these. I think it's the type that goes into 3500 concrete. Lol
They both likely come from the same factory and from the same casting mold. The AFR heads are just "higher QC" and often finish machined in the USA. When you have things made in China and order say, 30000 units, the factory will make 700000, about 300000 will pass minimum QC, the rest are "seconds" and sold for less on the market.
True I work their . Spot on 😆 we get them from China and we finished them in the USA. And some parts are quality . Depending on the new workers they rotate . I like this work but to bad we can't keep good workers . So most people order heads and some take many months or years to get your parts. They keep losing employees and not enough productions
Been waiting for this video, finally got the notification and was in the middle of a work meeting 😂 attention went right out the window. I'm running your vortec spring setup on a set of home ported vortecs hopefully going to have the engine together and dynoed in the next few weeks! Great vids 👍
Hahaha amazing! But sorry for the distraction 😄
Your fallowers have jumped over 2k since I watched the video!! And the heads have now jumped 100$ 😂 I think they are on to you!
@@6.liter-beater haha sh#t! Sorry man
I've had alot of comments saying, those heads aren't $165 now! Haha
Only duel springs? No dampers,or are dampers for solids only? My solid roller has dampers inside the inner springs
300 + CFM from a 195cc port....I'd love to see that !
I believe the AFR CNC 195 racing heads are around there
Pretty cool! 👍 but expensive
Eric Weingartner has proven the flow. He measured 299.2 @ .600" on his bench which is pretty conservative. It was not a marketing number on a Superflow 600 bench.
I've done a few SBC's with the fully CNC finished AFR 195 and there's nothing in that size out there that makes the same power unless you port it - and then it's not a 195 anymore...
This really shows how much profit the head companies see in a $2,000 pair of heads. Minus some R&D dollars, probably $1250 per pair.
Theres no doubt that the machine work and components are better in the brand name heads, but oftentimes, even they have flaws. But yes, there must be some serious profit margins
I would love some beehive springs😜👍
Your valve spring kit would work great with my new 1.6 exhaust valves and new seats. Thanks for the info great vids 👍👍
Great video! Those no-name heads make some power!
So who has run these for a while? What do you think of them?
Do they need any special hardware at all!
Great video by the way!
Thanks eh!
Damn gud????
@port nut I live in Canada, so everything is basically double the price for me after the exchange rate, massive shipping costs, duty and taxes, so 4000+ for a set of good heads isnt going to fly with me. Besides, I like a challenge without spending too much. And the price of these is cheaper than most guys want for worn out fuelie heads, haha...
Those are two different port designs on the same casting. My eBay heads look just like the afr ,only 11/32 valve stems. I think I have seen three different port designs on the same casting. Afr definitely gets the top choice castings.
so a little work with the dna vs the afrs
I have a question about the cheap heads, being aluminum with pressed in seats, have you heard of any seats coming loose in these heads??
I've heard of that on the old pro comp heads, but i haven't seen or heard of that on these ones.
Thanks! I've been considering getting a set. I'm very low budget and don't want to scrimp and get burned. Kind of like buying tools, knowing where you can save money on certain things and where you really do need to spend the money. I really enjoy your channel. Thanks again!
@dirtyburd71 hopefully they are still decent, The parts nowadays have quality issues with most brands. The DNA heads worked well for me for a budget build, 30+ dyno pulls, and even 5 or so pulls with boost
Interesting for sure and I'm a little smarter now.
👊👍
that is not slag in the ports, that is the cores parting line. better sand cores were used on AFR head. I worked in foundries for many years.
Yeah exactly, sorry I call it casting slag but thats probably not the right terminology
Got a part number for the knock off heads I'm in need of a set! I'd like to replace my 186. 300 hp heads and go aluminum and maybe a hydraulic roller in my ole tow truck
Woo-hoo...been waiting for this
no need for steam holes on heads for 400 never had an issue with not drillin them
I’m gonna be building a 355 for my kids c10 . Would u use a enforcer head over a vortec ? Just subscribed…. Really good content
Thanks for checking out my channel and subscribing.
Both are great options, maximum power and if budget allows go for the enforcers.
If you dont planning on running a large cam and building more of a cruiser with a it of power then vortecs work great aswell
@@cuttersperformance thanx for fast reply
Hey, 2 part question...
Bought a blueprint crate motor w vortec heads BP35512CTI1. Heads r different casting 906 (P) side & 062 (D) side, any downside? Cam specs show .495 / .502 lift 221-226 duration
110° LSA, heads appear to have no machine work to accept rhis set up. Any idea on how this is accomplished without valve train issues? Thanks.
No differece in 906 and 062 as long as the 906 doesn't have the press in exhaust seats.
That lift cam be accomplished with the right springs and retainers. I can get .580 with my beehive kit with no machining
Awesome. Glad to know.
The dna heads I bought were advertised as 200/64 2.02/ 1.60 but the seats are 1.94 at the most
Very weird, last couple sets ive had have been pretty good. But ive have heard of some poor ones. The skip white version have been pretty good so far
@cuttersperformance The set I have, I got from Amazon to do a vortec dyno comparison. I bought them bare, and when I went to lap the valves the seat line was so high it was almost off the valve. Maybe just this pair 🤷♂️
I'll check out there version and see if they're any different
The intake flow doesnt bother me, but those exhaust numbers are a bit concerning. Air in doesnt mean shiz if you cant get the air out.
Could be that they're from the same molds in the same plant, the AFRs have a better heat treat. Or maybe DNAs are just cosmetic blem castings rejected by AFR.
The flow comparisons are one thing. I'm wondering how heat cycles are going to effect the knock off
Yeah exactly! Time will tell
Sand papper roll the DNA Motoring Heads , Gasked match them . use a Neck Down Valve . & . it looks like the DNA Motoring Heads would Out perform the Afr heads .
I would be more concerned with the quality of the DNA head as far as the valve's valve seat Springs retainers go... not so much the flow numbers
Yeah exactly!
I got these as bare castings but im still worried about the seats and guides.
I'm adding American made valves, springs and retainers and we shall see
The biggest problem with the China heads is the hardware. I had a buddy order a different set for a BBC. Springs were supposed to have a seat pressure of 135. It was 80... Absolute crap.
PAC springs and Argentinian valves. That's where it's at.
Why dont you do a set of Edelbrock Performer sbc heads not much info on them out there.
I will try to get a set! I have a set of edelbrock victor jrs that will be hitting the flow bench soon
Hi - David Vizard here. I posted a very comprehensive Edelbrock Performer head porting video. Just go to David Vizard Video's .
@@marvingvx1 Hey David! I appreciate the work you do! We should chat soon
You ever consider flowing a set of the jegs (profilers)? I'd be curious if there is a difference compared to the real deal. My machinist steered me to the profilers over the AFRs... he said dollar for dollar and for what I was going to do they would be the better value. At the time it was a 600$ difference and I used that difference toward other things I needed. No regrets there lol.
Profiler heads are excellent! I run a set on my trans am
They often flow higher than advertised also
@@cuttersperformance makes me feel better about the 195s on my vette lol. I know guys have had issues with the raised exhaust port because the bolt holes aren't the normal raised style but my headers fit no issue. I'm just choking it with a crap intake at the moment.
Eww, great suggestion!
I did a C4 a few years back
383 stroker, 195 profilers, decent cam, TPIS intake
Worked out nicely 👌
Never dynoed it though
@@cuttersperformance Mines a crossfire but stock bottom end... so flat tops, thin head gasket, 195s, ported intake. Compression ratio I guesstimate around 10:1. The pistons are hard to cc in the block. I intended to do an overbore but there was still cross hatching in the bores so I said screw it. It's a 224/230 roller from comp. It moves out pretty hard anywhere below 4400. If you've ever seen a stock crossfire intake port... thats why. And when I grenade this I have an 880 block 383 ready to go lol.
Thanks for the video brother! Have you ever flowed 193 swirlport heads?
I have not been able to get a set for a decent price lately
But I do have some 305 vortec heads which are actually similar (they even have the swirl ramp)
Porting and flow videos coming up
@@cuttersperformance I have a pair of 193 heads I’d be willing to trade ya for some of your stuff! I’m doing a head upgrade from them currently and have the engine out. I’m debating vortec (in which case I’d get your spring kit), or a cheap aluminum combo. Want me to contact you with my info?!
What brand of valves did you put in the cheapo head?
Ferrea valves. The same type of head is being used on a 355 (youtube series) and I will be using elgin valves on that one
@@cuttersperformance
Ah. Was interested to know why you didn't choose Ferrea. When you said US made valves, I thought you were choosing Manley or Victory.
With the heads as is, I'd guess that the AFRs might respond to a cam with longer exhaust duration, but it's also possible that the I/E flow ratio could already be optimized. AFR is not exactly new to this game.
The I/E ratio is very dependent on the CR so AFR could not 'optimize' this unless the CR was known for each and every build the heads could be used on.