These are great heads. I wish i would have bought more of them. Dont put bigger valves in! Open pinch point a tiny bit. I always use adjustable push rod guides. Eveything this guy said is spot on.
@@cuttersperformance looking at getting an old set of brodix 867 finished out as their bare castings. Do you have any contact info I can reach you by? Thanks!
Great job Pat! Just shows how important the valve job is. I’m learning how to do it myself with neway cutters. Can’t wait for the 355 Dingle ball vortec !!!!
I have a set of these with the dual (standard and vortec) intake bolt pattern. They have a . 100" raised intake port, I'm not sure if yours are the same, but I used a 1205 and port matched them to the 1205 and knoched the intake bolt holes out to work. It made a nice port. I opened the pinch up a little, smoothed out the bowls, smoothed and softened the guide bosses, and blended the chambers. I used pbm backcut valves that lowered the chamber volume by 3-4 cc's to get 10.5-1 compression on a flat top 383 with a .038" quench. All this with a port matched victor Jr and a comp cams er294hr hydraulic roller cam. I think it should put out at least 475 hp if I can get the tune right with 1 5/8 headers and an 850 carb. It should have plenty torque as well. They need a 2.08" intake valve because of the shitty throat that is the worst thing about these heads and are still better than anything procomp has to offer.. Eric Weingartner did a set of these that flowed damn near 300cfm for his sister's 355. They're a dart platinum 200cc copy and a dart cnc program will service these heads perfectly. The spark plugs is moved about 1/8 inch is the biggest difference. I personally don't think the dart 200 heads flows that great either, but we don't race flow benches or dyno's. Lol
I know this is an old video. But my dna heads are still holding up. 383 stroker. Thanks. I bought these heads because of you. 400 dollars. 600 for porting. 160 shipping. 300 for pro 5 angle and back cut tulip valves. 500 for small parts. I was using vortecs. These blew them away. I kept the 2.02 valves.
I have watched a lot of different videos on small block Chevrolet and the 53 I don’t believe I’ve seen another set of videos that I enjoy as much as yours. You’re very knowledgeable. Explain things extremely well. I always look forward to your next video. Thank you for what you do.
Bought a set of proheder months after they came out Depends where you get these...mine had avery nice velve job on it still had it checked. After porting first pass I got 308int and 230 at 600 with only a few cc removed. #'s were consistent with a 195c comp port and carried til .750 Lots of potential with min removal in the right places. VJ on those (vid) is horrid glad you went after it. A proper one can net as much as 25 cfm. The drill lappers will never understand this and unseat the other cuts doing this lol. Your getting better man keep up the good work
You mentioned gasket matching the intake after doing the heads. I would think going from smaller to larger at the intake port/cylinder head port junction would actually help, a bit of anti-reversion. Like everyone else I can hardly wait to see the dyno results, should be a very nice combo! Thanks!
The old sang is a step is always better than a wall when it comes to intake to head alignment. (Aka a smaller intake port is better than a smaller head port) But personally im a believer is the smooth transition between the two if possible. Im still playing catch up with other projects for customers but this will be the next one to hit the dyno Cheers!
Amazing! Haha "you little piss cutter" I actually heard that first from a ole school mechanic, but apparently its a old sang and often used in the military for a type of formal hat
Hey Salami Slicer, if your bowl is even the slightest bit larger than your seat the air will go turbulent right where the step is at. You’ll start to get de atomization of your fuel.
Yeah this engine will be hitting the dyno! I will be sure to get cranking compression, and vaccum readings at idle on the dyno aswell for the guys looking to duplicate this combo Cheers!
I used the FLo-Tek 1200-505-Angle plug on my 355. I've got a Lunati 101020704 hyd. flat tappet camshaft, performer RPM airgap knock-off intake and a FST 750 manual secondary carb (Holley's work well but the primaries are about the size of dimes and then when the secondaries open they're like 3x the size! whereas these both are the same size and the price was right and they look well made and work well from all reports) and Hedman 1 5/8" headers with a 10.2 static comp. Hope to make at least 430 if I do bother taking it to the dyno
It would be interesting to see these as cast/before pushrod clearance is cut. They seem like 1206 is a stretch for the pinch point because of their cut?
Just at beginning of this video but sure makes a good amount of difference using a good flowing valve and not what would come with these assembled right?
What valvetrain components did you use on these heads? I found out an old set of iron heads are cracked so I ordered a pair of these. I have comp cams beehive valvesprings and retainers and locks. What spring locator and screw-in rocker studs do you recommend? I already have 1.6 roller rockers for 3/8" rocker studs so I'd prefer to stay away from 7/16". Self-aligning so no guide-plates. My old 1.94/1.5 valves are no good on these heads either.. and I'm looking for valve seals as well. Cam is a Comp cams xfi252hr. 202/212@.050". .550"/.546". It's going on a 2bbl gm tbi truck motor from the early 90s. My retainers and springs and locks are pn 787-16 for the retainers, Pn 648-16 locks, And 26986-16 for valvesprings. Again, I'm looking for a pn for spring locators, 3/8" screw in rocker studs, and valve seals, and valves for these heads. Thanks, your videos are informative and inspirational. I can't wait to see how much power the turbo combo will make.
@@cuttersperformance yes. I just found it. Thank you for your help selecting components. I knew I'd seen a list but couldn't remember where. I just ordered a set of valves and locators and seals.. What are your recommendations on rocker studs?
I heard you say peak was @650.but where did it stop making large gains,because when you stop making big gains you have a parasitic power loss due to compressing 16 springs or (32) if you have double springs with that much weight being taken from the engine due to the loss of compressing then without flow gains also.so your sweet spot as far as that goes im guessing the magic lift would be around 550 to 575.
I wonder what the math is for adding the valves and other components plus the valve job ? These are 400 a set now ,then you need springs , valves, studs , plates etc . Perhaps just getting a good bolt on set might be better .
Thank you for all the videos! Just picked up a pair of 305 vortec's. And wondered what's your part number(s) for the bee-hive springs? I'm installing on a forged .060 283/Comp 268. Gotta run better than older 416's (?) Plus the vortec's have hardened seats right? Thanks again.
Actually im just finishing up a video on 416s (305 HO) heads vs the 305 vortecs on the flow bench. With some porting to see what the 416s can do. Yeah the 059 (305) vortecs have induction hardened seats Cheers!
I really can't help but wonder what these would flow with the clean up like you did here but with the 2.05/1.6 valves and cut the throats for a 2.08 and 1.65 valve.
If anyone is wondering what would happen if you cut the throat larger than usual for whatever size valve. It decreases flow when the throat is more than 91% of the valve size because it doesn't leave enough meat to round the transition from throat to seat. That leaves a sharper edge that henders flow
are you going to have to worry about dropping valve seats with the reduced material above the seat? i wonder if that little bit of extra is for when the heads heat up and expand it can still hold the seat in on that side.
Its a very slight amount of material removed as your just blending the edge. More material would be taken off if you went up to a 2.05 valve than the bit of blending. I dont foresee any issues here but i like your thinking Cheers!
@@cuttersperformance i feel a little bit better about it then. i know you deff know your stuff. ive just seen so many alu heads that dropped valve seats even stock id be so weary about it. really good gains from the heads though. i was drooling but i think im sticking with modded vortecs when i go bigger on those
I finshed the set for the youtube 355 to a 1206 gasket. The bowl is already oversized abit for a 2.02 valve so almost all the flow increase I got was opening up the oddly shaped intake port to a 1206
@@cuttersperformance did you notice those heads having a .100" raised intake runner? I port mated to a 1205 and gasket matched to a Victor Jr, opened up the pinch, slicked the bowles, guides and ports down. I noticed they could use a 2.08 intake valve to fix the bowl/throat problem. The problem I'm thinking of now is if I want to go to a rpm airgap, I'm worried the ports won't line up. The airgap has a bigger port opening than the Victor Jr. Thinking of taking them off and lowering the port opening to a 1206 now while it's on the stand verses taking them off in the car.
Yeah a 2.08 valve would be a great move if you were going for all out power Im not sure if you have the DNA heads or similar but alot of these off brand heads seem to have oddly shaped and placed intake ports. For me the 1206 worked out really nicely and I ported aligned it with a Edelbrock air gap
@@cuttersperformance what I have is the same as the afr enforcer heads, skip white, assault ect. These are known to have a 100" raised intake port. Kinda makes intake choices a pain in the ass. What surprised me was the rpm airgap having a bigger port opening than the Victor Jr.
Thanks for sharing, I watched it closely, I got a 030 flat top 350 880 block and 186 ported with a performer intake that needs some help!! Lol love your tech
I read on forums that people use a valve train kit from competition products, do you know what part number for hydraulic roller? Also do they need +.1 valves and rods?
Both will work fantastic, if your going with higher compression (10.5:1+) and a larger cam then the DNA heads but if its lower than that the vortecs will work great
Yes for sure you can go too big. These heads have oddly shaped intake ports, so reshaping to a 1206 port wasy my best option. Sometimes porting to a larger gasket on heads and the intake manifold can cause a loss in port velocity and you may gain in peak power but a loss in average power.
ello piss cutter i like to know if you be interest in a set of corvette 128 case L98 i have new bronze glide for them i have 300 in parts include the heads i like to sell them close to what i have in the glides. the glide were 200.00 so if you know some one to buy them also a older nice shape edelbrock intake CB-3 for 125.00 and other chevy parts crank and rods .060 seal power FT pistons soif you are interest i have a pistons on Craigslist Milwaukee wi. Thanks Terry
Lighter valve train= ability to run less valve spring= less parasitic loss= less heat= more rpm potential before valve float sets in. I know you know that, but you shouldn't downplay the significance of a lighter valve train, plus the machining from afr is usually very good, the valves are high quality. When starting with the assault racing head, to bring it to the same spec afr does would be difficult to do for the diy guy and would likely cost more than the package from afr. It is huge bang for the buck. And if the diy guy does some basic bowl work they are even better than afr advertised specs.
O i totally agree but heres the way I look at it: Most guys looking at heads in this range are running hydraulic roller or flat tappet cams with operating ranges under 7000 rpm. At this point there's really not a huge need to lighten up the valve train as there will be no benefits found, and often times springs are spec'd basically the same at this level given your cam type. So I'm just trying to let guys know that they don't have to go to a 8mm stems as it will be added costs with no real benefit in my opinion (Alot of guys think they add flow) but its great that the afr heads come with them already. As mentioned in a previous video i totally agree that the AFR head is a better product overall and if for average guy they are the way to go If your looking at a budget head. But if you have a good machinist and willing to do some clean up then a guy can used the assault heads with great results. I'm not trying to push any products but just offer some results of things I've have done. Cheers!
Would ANYBODY be running over .600 lift with such cheap heads?? Flow numbers or increases @ .650 seem irrelevant. I think guys that buy these are gonna run a hydraulic FT or street roller up to maybe .560 lift.
You gotta remember flow numbers are just an evaluation of the heads flow potential. The port flow can be very different once running on an engine, so flowing them at higher lifts on a bench can give you a good idea of the efficiency of the port and valve job. But to answer your question, most guys would be running under. 600 lift with these heads
@PISS-CUTTER Performance yes you did.. shortly after I wrote the question to you I seen the video of the 355 build you did. You're awesome man keep it up.
These are great heads. I wish i would have bought more of them. Dont put bigger valves in! Open pinch point a tiny bit. I always use adjustable push rod guides. Eveything this guy said is spot on.
Looking forward to the numbers off this build.
Me too! Haha
@@cuttersperformance looking at getting an old set of brodix 867 finished out as their bare castings. Do you have any contact info I can reach you by? Thanks!
Great job Pat! Just shows how important the valve job is. I’m learning how to do it myself with neway cutters. Can’t wait for the 355 Dingle ball vortec !!!!
I have a set of these with the dual (standard and vortec) intake bolt pattern. They have a . 100" raised intake port, I'm not sure if yours are the same, but I used a 1205 and port matched them to the 1205 and knoched the intake bolt holes out to work. It made a nice port. I opened the pinch up a little, smoothed out the bowls, smoothed and softened the guide bosses, and blended the chambers. I used pbm backcut valves that lowered the chamber volume by 3-4 cc's to get 10.5-1 compression on a flat top 383 with a .038" quench. All this with a port matched victor Jr and a comp cams er294hr hydraulic roller cam. I think it should put out at least 475 hp if I can get the tune right with 1 5/8 headers and an 850 carb. It should have plenty torque as well. They need a 2.08" intake valve because of the shitty throat that is the worst thing about these heads and are still better than anything procomp has to offer.. Eric Weingartner did a set of these that flowed damn near 300cfm for his sister's 355. They're a dart platinum 200cc copy and a dart cnc program will service these heads perfectly. The spark plugs is moved about 1/8 inch is the biggest difference. I personally don't think the dart 200 heads flows that great either, but we don't race flow benches or dyno's. Lol
I know this is an old video. But my dna heads are still holding up. 383 stroker. Thanks. I bought these heads because of you. 400 dollars. 600 for porting. 160 shipping. 300 for pro 5 angle and back cut tulip valves. 500 for small parts. I was using vortecs. These blew them away. I kept the 2.02 valves.
I have watched a lot of different videos on small block Chevrolet and the 53 I don’t believe I’ve seen another set of videos that I enjoy as much as yours. You’re very knowledgeable. Explain things extremely well. I always look forward to your next video. Thank you for what you do.
Bought a set of proheder months after they came out Depends where you get these...mine had avery nice velve job on it still had it checked. After porting first pass I got 308int and 230 at 600 with only a few cc removed. #'s were consistent with a 195c comp port and carried til .750
Lots of potential with min removal in the right places. VJ on those (vid) is horrid glad you went after it. A proper one can net as much as 25 cfm.
The drill lappers will never understand this and unseat the other cuts doing this lol.
Your getting better man keep up the good work
Cant wait too see this engine all together
Love this channel. also can’t wait for the numbers.
Nice work sir. Thanks for flow numbers.
You mentioned gasket matching the intake after doing the heads. I would think going from smaller to larger at the intake port/cylinder head port junction would actually help, a bit of anti-reversion. Like everyone else I can hardly wait to see the dyno results, should be a very nice combo! Thanks!
The old sang is a step is always better than a wall when it comes to intake to head alignment.
(Aka a smaller intake port is better than a smaller head port)
But personally im a believer is the smooth transition between the two if possible.
Im still playing catch up with other projects for customers but this will be the next one to hit the dyno
Cheers!
love the channel Pat. I am getting ready to start working on my 350 Vortec thanks to your videos.
I'm building a 327 small journal and, I was thinking about getting the DNA performance heads and run a hydraulic roller cam. 😀
Absolutely Feckin Awesome name ! My uncle call me back in the 60s
Amazing! Haha "you little piss cutter"
I actually heard that first from a ole school mechanic, but apparently its a old sang and often used in the military for a type of formal hat
You can open up the chamber below the deck surface to de shroud that intake valve at lower lift.
Hey Salami Slicer, if your bowl is even the slightest bit larger than your seat the air will go turbulent right where the step is at. You’ll start to get de atomization of your fuel.
Heads look great, with your massaging they should do just fine. I'm looking forward to the build coming together too! Gonna a see some dyno time?
Yeah this engine will be hitting the dyno! I will be sure to get cranking compression, and vaccum readings at idle on the dyno aswell for the guys looking to duplicate this combo
Cheers!
261 at 5 270 at 600 lift before chamber work. Peaked at 284.
I used the FLo-Tek 1200-505-Angle plug on my 355. I've got a Lunati 101020704 hyd. flat tappet camshaft, performer RPM airgap knock-off intake and a FST 750 manual secondary carb (Holley's work well but the primaries are about the size of dimes and then when the secondaries open they're like 3x the size! whereas these both are the same size and the price was right and they look well made and work well from all reports) and Hedman 1 5/8" headers with a 10.2 static comp. Hope to make at least 430 if I do bother taking it to the dyno
Might try your Summit cam if it runs well!
Pat, do you remember what you used for guide plates and rocker studs ?
It would be interesting to see these as cast/before pushrod clearance is cut. They seem like 1206 is a stretch for the pinch point because of their cut?
It is abit but i found it was the best option for port alignment
Those flow numbers are in the neighborhood of the AFR 195 street eliminater nice job , they should do nicely .
Yeah not too bad for a 2.02 valve on a cheap head
Cheers!
Just at beginning of this video but sure makes a good amount of difference using a good flowing valve and not what would come with these assembled right?
I can't say for all these budget assembled heads, but most won't have backcut intake valves
What valvetrain components did you use on these heads?
I found out an old set of iron heads are cracked so I ordered a pair of these. I have comp cams beehive valvesprings and retainers and locks. What spring locator and screw-in rocker studs do you recommend? I already have 1.6 roller rockers for 3/8" rocker studs so I'd prefer to stay away from 7/16". Self-aligning so no guide-plates. My old 1.94/1.5 valves are no good on these heads either.. and I'm looking for valve seals as well.
Cam is a Comp cams xfi252hr. 202/212@.050". .550"/.546". It's going on a 2bbl gm tbi truck motor from the early 90s.
My retainers and springs and locks are pn 787-16 for the retainers,
Pn 648-16 locks,
And 26986-16 for valvesprings.
Again, I'm looking for a pn for spring locators, 3/8" screw in rocker studs, and valve seals, and valves for these heads.
Thanks, your videos are informative and inspirational. I can't wait to see how much power the turbo combo will make.
Did you happen to see this video? Should answer your questions ua-cam.com/video/JjVddvcuHqU/v-deo.html
@@cuttersperformance yes. I just found it. Thank you for your help selecting components. I knew I'd seen a list but couldn't remember where.
I just ordered a set of valves and locators and seals..
What are your recommendations on rocker studs?
Just wondering how much would a machine shop charge for what you did here? Would it be better to just go with the eliminator heads
I heard you say peak was @650.but where did it stop making large gains,because when you stop making big gains you have a parasitic power loss due to compressing 16 springs or (32) if you have double springs with that much weight being taken from the engine due to the loss of compressing then without flow gains also.so your sweet spot as far as that goes im guessing the magic lift would be around 550 to 575.
I wonder what the math is for adding the valves and other components plus the valve job ? These are 400 a set now ,then you need springs , valves, studs , plates etc . Perhaps just getting a good bolt on set might be better .
Yeah especially at the price of these castings now
Do you really need to do the valve job? Just clean up & get new valves + l00 length & new seals & new dual springs etc, will it work?
Great information
How do you think the DNA motoring heads would hold up to boost? Supercharger of course.
I boosted this set of heads in the dyno and made 700hp/700ftlbs. Check out my channel for that video
@@cuttersperformance I'll have to check that out. Thanks!
You must have 1000s of dyno pulls to develop ports like that?
How much hp are the stock ARF enforcer heads capable of as cast and set up by them?
Approx 500 to 515hp potential in stock form
@@cuttersperformance thanks for the info! These will definitely meet my needs.
Thank you for all the videos! Just picked up a pair of 305 vortec's. And wondered what's your part number(s) for the bee-hive springs?
I'm installing on a forged .060 283/Comp 268. Gotta run better than older 416's (?) Plus the vortec's have hardened seats right?
Thanks again.
Actually im just finishing up a video on 416s (305 HO) heads vs the 305 vortecs on the flow bench. With some porting to see what the 416s can do.
Yeah the 059 (305) vortecs have induction hardened seats
Cheers!
@@cuttersperformance AWESOME 😎
I've been porting my own stuff for decades. Never had any issues.
I also have 2 sets of the 416 ho's (Ho ho ho😜)
520s or 059s run better than 081s or 601s that run better than 416s.
244 dollars on Amazon right now. Still a great deal.
I really can't help but wonder what these would flow with the clean up like you did here but with the 2.05/1.6 valves and cut the throats for a 2.08 and 1.65 valve.
They would do alot better with a larger intake valve on the flow bench
@@cuttersperformance if only my set up didn't require the 75cc chamber I'd probably go with the enforcers.
If anyone is wondering what would happen if you cut the throat larger than usual for whatever size valve. It decreases flow when the throat is more than 91% of the valve size because it doesn't leave enough meat to round the transition from throat to seat. That leaves a sharper edge that henders flow
Yo pat nice vids .
are you going to have to worry about dropping valve seats with the reduced material above the seat? i wonder if that little bit of extra is for when the heads heat up and expand it can still hold the seat in on that side.
Its a very slight amount of material removed as your just blending the edge.
More material would be taken off if you went up to a 2.05 valve than the bit of blending. I dont foresee any issues here but i like your thinking
Cheers!
@@cuttersperformance i feel a little bit better about it then. i know you deff know your stuff. ive just seen so many alu heads that dropped valve seats even stock id be so weary about it. really good gains from the heads though. i was drooling but i think im sticking with modded vortecs when i go bigger on those
I'm interested in some of your beehive springs kits for a small block Chevy
Hey man! Currently no stock on the kits unfortunately
Which intake gaskets did you use? I used 1205 but the port is raised . 100". I notched the intake gasket bolt holes but I'd like a better solution.
I finshed the set for the youtube 355 to a 1206 gasket. The bowl is already oversized abit for a 2.02 valve so almost all the flow increase I got was opening up the oddly shaped intake port to a 1206
@@cuttersperformance did you notice those heads having a .100" raised intake runner? I port mated to a 1205 and gasket matched to a Victor Jr, opened up the pinch, slicked the bowles, guides and ports down. I noticed they could use a 2.08 intake valve to fix the bowl/throat problem.
The problem I'm thinking of now is if I want to go to a rpm airgap, I'm worried the ports won't line up. The airgap has a bigger port opening than the Victor Jr. Thinking of taking them off and lowering the port opening to a 1206 now while it's on the stand verses taking them off in the car.
Yeah a 2.08 valve would be a great move if you were going for all out power
Im not sure if you have the DNA heads or similar but alot of these off brand heads seem to have oddly shaped and placed intake ports.
For me the 1206 worked out really nicely and I ported aligned it with a Edelbrock air gap
@@cuttersperformance what I have is the same as the afr enforcer heads, skip white, assault ect. These are known to have a 100" raised intake port. Kinda makes intake choices a pain in the ass. What surprised me was the rpm airgap having a bigger port opening than the Victor Jr.
What are you using for your valve jobs?
A bigger intake Valve would be shrouded even worse than what you have now.
I want to see this engine on the dyno!@😊😊
ua-cam.com/video/ZkDaojRiduU/v-deo.html
Thanks for sharing, I watched it closely, I got a 030 flat top 350 880 block and 186 ported with a performer intake that needs some help!! Lol love your tech
I read on forums that people use a valve train kit from competition products, do you know what part number for hydraulic roller? Also do they need +.1 valves and rods?
I will be making a video on everything i put on the heads, i ended up using beehives on these ones.
Yes you will need +.100 valves
cool info
Hey how's it going did you ever get those kits together
Hopefully by the spring they will be back in stock
I can't find ant DNA heads that are 64 cc do you any part numbers for sbc heads that are 64 cc
They advertise them at 68cc I believe but they are usually 64 to 65 cc in reality
Need help vortec or DNA heads on my 327 ?
Both will work fantastic, if your going with higher compression (10.5:1+) and a larger cam then the DNA heads but if its lower than that the vortecs will work great
@@cuttersperformance well the small journal I got already was at 10.1 compression rated @275 hp with stock heads. Want something in the 380-425 range.
Is it possible to go to big on the gasket matching?
Yes for sure you can go too big. These heads have oddly shaped intake ports, so reshaping to a 1206 port wasy my best option. Sometimes porting to a larger gasket on heads and the intake manifold can cause a loss in port velocity and you may gain in peak power but a loss in average power.
@@cuttersperformance so do you recommend port matching to the intake and smoothing out the port or leave it be and loose that little bit of power?
ello piss cutter i like to know if you be interest in a set of corvette 128 case L98 i have new bronze glide for them i have 300 in parts include the heads i like to sell them close to what i have in the glides. the glide were 200.00 so if you know some one to buy them also a older nice shape edelbrock intake CB-3 for 125.00 and other chevy parts crank and rods .060 seal power FT pistons soif you are interest i have a pistons on Craigslist Milwaukee wi. Thanks Terry
Lighter valve train= ability to run less valve spring= less parasitic loss= less heat= more rpm potential before valve float sets in. I know you know that, but you shouldn't downplay the significance of a lighter valve train, plus the machining from afr is usually very good, the valves are high quality. When starting with the assault racing head, to bring it to the same spec afr does would be difficult to do for the diy guy and would likely cost more than the package from afr. It is huge bang for the buck. And if the diy guy does some basic bowl work they are even better than afr advertised specs.
O i totally agree but heres the way I look at it: Most guys looking at heads in this range are running hydraulic roller or flat tappet cams with operating ranges under 7000 rpm. At this point there's really not a huge need to lighten up the valve train as there will be no benefits found, and often times springs are spec'd basically the same at this level given your cam type.
So I'm just trying to let guys know that they don't have to go to a 8mm stems as it will be added costs with no real benefit in my opinion (Alot of guys think they add flow) but its great that the afr heads come with them already.
As mentioned in a previous video i totally agree that the AFR head is a better product overall and if for average guy they are the way to go If your looking at a budget head. But if you have a good machinist and willing to do some clean up then a guy can used the assault heads with great results.
I'm not trying to push any products but just offer some results of things I've have done.
Cheers!
Hey Patt, I left you a email, can you get back to me about it as soon as possible please, thanks again.
No problem!
Would ANYBODY be running over .600 lift with such cheap heads?? Flow numbers or increases @ .650 seem irrelevant. I think guys that buy these are gonna run a hydraulic FT or street roller up to maybe .560 lift.
You gotta remember flow numbers are just an evaluation of the heads flow potential. The port flow can be very different once running on an engine, so flowing them at higher lifts on a bench can give you a good idea of the efficiency of the port and valve job.
But to answer your question, most guys would be running under. 600 lift with these heads
0.578 lift from a 218/228 @ 0.050 roller on my 383. These heads flow 291 cfm @ 0.500 and 299 @ 0.600 after ported being by Lloyd Elliot.
@@chrisreynolds6520 That's damn impressive. I don't suppose the porting was also $199?
@@chrisreynolds6520 By the way, is that with a 1.6 rocker? 1.65? Cuz that's a lot of lift for only 218/228 duration.
@@jeffrykopis5468 1.7 rocker
You are very knowledgeable and i really enjoy you videos!!! Can i use these heads on a vortec 880 block that doesn't have the coolant bypass hole?
Yeah, I ran these heads on an 880 vortec block
@PISS-CUTTER Performance yes you did.. shortly after I wrote the question to you I seen the video of the 355 build you did. You're awesome man keep it up.
Can I use these on a 1991 l98 TPI setup?
You will probably have issues getting the lower intake to seal to the large intake port
use an afr 180 elim head perfect for the tpi