HOW TO MAKE 600-HP BIG-BLOCK CHEVY POWER. FROM CHEAP, JUNKYARD TURBO 8.1L TO ALL-MOTOR 496 TO SC 454
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- Опубліковано 29 вер 2024
- HOW CAN I MAKE A 600 HP BIG BLOCK? CAN I ADD BOOST TO MY 8.1L GEN 7 BBC? WILL A 496 STROKER MAKE OVER 600 HP WITH STOCK, IRON HEADS? CAN I RUN A 6-71 BLOWER ON MY JUNKYARD 454? HOW MUCH POWER DO HEADS, CAMA ND INTAKE ADD TO A JUNKYARD 454? CAN I RUN BOOST ON A GEN 6 454? HOW MUCH IS A HEAD SWAP WORTH ON A 496 STROKER? CHECK OUT THIS VIDEO WHERE I DEMONSTRATED THREE DIFFERENT METHODS OF EXCEEDING 600 HP WITH A BIG BLOCK CHEVY. THE COMBOS INCLUDE A TURBO 8.1L, AN ALL-MOTOR 496 WITH STOCK, REC-PORT, IRON HEADS AND A GEN 6 454 EQUIPPED WITH HCI AND A 6-71 BLOWER (AT DIFFERENT BOOST LEVELS).
I’m so glad rich is doing videos on the gen 7. It’s much needed information.
Not sure why gen 7 would be much different than gen 6, 5, or 4? Only gen 7 and gen 8 heads are the biggest difference, but the dimensions and sizes are all similar from 1964 and up. What did you learn exactly as I like to learn too? RH is a modern shop teacher learning the masses about what was top secret just under 20 years ago! 👍
If you're going to use the stock manifold, you need to take it off and modify it first. The PCV system bleeds directly off the bottom of the manifold and will pump your cylinders full of excess oil. That needs to be plugged.
on the 8.1L?
@Richard Holdener Did you know Dart makes a carb manifold for the 8.1 and a standard HEI fits in with no mods? Just sayin!
I don’t know what is going on, but I had my 454 BBC built by a very known engine shop. They built me a 496BBC Stroker all forge and racing rods and pistons. Making it 10.1 compression. With 781 iron oval port cylinder heads, larger valves, solid roller, Weiland Track Warrior Intake Manifold, DC carb Black Window… 850 … unleaded with HVH 1 inch spacers.. Jets to 75-83 from 76-85 less timing..
Why am I only getting 704.5 STPTrq Clb-ft @ 3,500 rpm’s
And top out at 590.4 STPPwr CHp
It’s on a known good Dyno and have switched out carbs 3 different times, why isn’t my hp not way up?? But my ft lb or torque is over 700+ easy…. Please help me out
700 lb-ft at 3500 rpm?
@@richardholdener1727 Yes 704.6 @ 3,500rpm STPTrq Clb-ft and 590.4 @ 5,200rpm STPPwr CHp..
U have way more tq than hp wonder if heads are not capable to flowing enough
Hey buddy I have a 2010 Silverado hd I'm putting a 6.2 in for a guy I'm looking for a cam suggestion to help get this 6800LB truck to moving off the line. If you could help I'd appreciate it. Thanks
BTR TRUCK NORRIS
@@richardholdener1727 thanks
This is exactly the video I needed. Just acquired a square body with a 454 that needs a redo.
Thanks for posting pump gas friendly blower options for us street cruizer guys
Injection is nice.
But; I’d rather be blown!
Bein blown and stoked at the same time is the best!!🤷♀️
Personally I blame squirrels
What do you do with all your engines? Save them for project or sell?
It be amazing if you did a build with a 2 valve 6.8 V10 engine
You should include cost
On any of these combinations it would be nice to see the price difference among the three
Hi Richard. I see you used a gen VI block for the 496. Is it possible to use a internally balanced crank in these blocks with a 2 pc rms conversion?
Keep up the great testing! Loving it.
Nick 10:06
So I just pulled a l29 454 . I want to rebuild it and to keep the stock bottom end if it’s still good when I take it to the machine shop . And I’m just gonna do a cam , heads , intake and carb . Anyone have a detailed parts list for me to accomplish this without breaking the bank to badly but still have quality engine at the end ? I never have built an engine before so need ideas . Thanks
Take a look at the Many Gen 6 454 videos, look for a 274 cam, Performer RPM intake, 650 or 750 Brawler and HEI distributor
@@richardholdener1727 ok cool I will I just found your videos and will do that . I appreciate it
Hello I have a question what motor do you suggest to get 500 hp for a 1958 impala but all motor no turbo please let me know thanks
6.0l ls or 454 bbc
@@richardholdener1727 ok cool thank you very much
The 496 with the 088’s is an impressive combo, good numbers with a GM casting cylinder head. 👍🏻
I was hoping to see a naturally aspirated 8.1 Vortec with 600HP. That engine has a ton of crap the bears no resemblance to an 8.1 Vortec.
A 600 HP naturally aspirated old style big block I can build in my sleep.
Very disappointing.
My old 468 I built made 610hp/555ft lbs with 93 octane, 10.2:1 compression and a 850 double pumper carb. I used a set of unported 308 iron eagle heads, victor jr intake. and the #7 rocker coming off at the end of the Dyno pull. Didn't get to make another pull. 👀🤷 Great video as usual!!🤟
4:19 850 ft lbs, what transmissions can take an input torque like this and live on the street?
A GUY DROVE INTO THE SHOP WITH A TURBO 8.1L IN A 3500 TRUCK-RUNS GREAT
Hey that was this guy. Mine made 830lb/ft at the tire. Has a stock Allison trans with 579,000 miles on it. It’s all in the tune.
@@richardholdener1727 what cx racing air/water intercooler is that u use?
Planning on building a gen 6, 496. Would afr 265. Heads and that xr271 cam you used, and a air gap dual plane be a good combo for a weekend driver truck application?
I don't recall and xr271 cam
@@richardholdener1727 its the cam you used on the 454 with the 6-71 in this video
Thanks, Richard. Any way you could show us how to do a 700 hps in a Chevy BBC 427?
I don't think I have tested any 427 motors making that much
I have a pro built 427 on the budget I could afford. 433 cu in, 11 to 1, Chevy iron rectangle port closed chamber heads, solid lifter cam 256/264 dur @ .050, lift .595/.621. Holley 850 dp on Weiand Track Warrior single plain man. 562 hp @ 6300 rpm.
Turbo 8.1 is a torque king
That's 848 all-day-long ft.-lbs. of torque.
So in a 496 build for a 4x4 dually hauling heavy loads would you go with a steel crank or would a cast crank do
I would not worry about a cast crank for that
What are the statistical odds of finding a 496 with a forged crank these days ? And 7 lbs of turbo boost is ok on stock 8.1 valve springs ? Weiand used to say add spring pressure for boost situations
As long as you aren't floating the valves as boost and rpm increase, it's all good. Dyno seems to agree.
YOU DON'T NEED A FORGED CRANK IN THE 8.1L, AND IT WAS STOCK SPRINGS
@@richardholdener1727 would you say that stock springs are ok for low boost. Or is it more of a boost allowed for higher revving and springs may be needed then
202 k 🐿🐿🐿
Richard. I put together a 496. It has +22 dome, 1/16 ring pack, 118cc chamber, 320 Rec port speed master heads, zero deck, .039 gasket. Lunati flat tappet 268/276 .549/554 cam. 2" -long tubes, Edelbrock 800cfm AVS2 carb on a Wieland hi rise dual plane. MSD HEI. Any educated guess for power? You've done so many test so your guess will be good enough for me..
heads will hold it back-is that cam duration measured at .050 or the advertised? I'm guessing advertised based on the other components-but mid 500s
@@richardholdener1727 lift at .050 is 227 and 233
@@richardholdener1727 Would you recommend the rec port AFR Enforcer or the rec port Pro Maxx?
When you turbo a engine does the pipes make a difference say 3,4 inch,y pipe,h pipe,x pipe for horsepower does size and alphabet matter?
not nearly as critical-usually only done on twin turbos
We need a big bang 8.1!!!
BBC 🤯
Didn't catch which block was used on n/a build or final compression ratio
I think gen 5
Was the lift on the last cam to shove more air in because the duration wasn’t as big as the 255 cam
Just something I was trying at the time
Hey Richard what was the compression ratio on the 496 with the rods, pistons and the 088 heads? Made over 600 hp. I currently run a 496 with more or less the same rotating assembly, highly ported 088 heads and a marine cam. In my situation I ran out of money and couldn't afford a nicer roller cam. Used a flat tappet comp cam. 544/547 lift 240/240 duration ( that's a close number on duration, can't remember exactly) with a 112 lobe separation. Think I'm close to 600 hp at the flywheel? Have a Holly single pumper 750 4150 flange on it now I also don't think is enough carb. This setup is in a 24 foot boat. THANKS!
10:1 ish
@@richardholdener1727 sounds great. I'm at 10.3 - 1 here. With a 4.250 crank, 6.385 rods and can't remember exact spec on the pistons. Mahle with valve reliefs. Thanks Richard! I think I should be around 600 with the right carb.
👍💪
Richard where do you get your shirts? Like the “dynosaur” one?
my wife made them for me
Mr. Holdner, would you recommend a 6-71 or 8-71 for a 454 to 496 build? Thank you.
for what power level
@@richardholdener1727- I would like to exceed 1000hp in my boat for short periods of time. The power is to get a hydrofoil on step and then back off. Was looking at the Dyers 6-71 and 8-71. Would like flexibility in regards to larger or smaller engine displacement if that's possible or practical with a single blower. Thank you.
Where does a person get the edlebrock heads and what is the price? Great video!
FROM EDELBROCK
Hey Richard do the truck Norris cam can go with the gen-6
the Truck Norris is for an LS-not a BBC
@@richardholdener1727 think you
Bet you won't say what studs you used lol?
ARP
@@richardholdener1727 dang! I should've said part number 🤣🤣
wow again with the squirrels,haha what a dork
Finally, something other than another stupid "LS", video. We get a real engine now!🤘😜
FINALLY, SOMEONE WATCHING THE LAST THREE BBC VIDS
Can we get a Japanese v8 Toyota 1uzfe Nissan VK45DE AND VK56DE
Seems like you ought to be able to make a 600 HP 427.
Please test an under bonnet blowers on big blocks and its a equal comparison with a single carb. We all can't show of what we have in some states. And should be in this bracket. And cheap in comparison. Cheers
what is an under bonnet blower?
@@richardholdener1727 sorry what I should have said low profile blowers like the 144 177 now we have 192 and 250 from The Blower shop billet housing Teflon seales and yes old straight rotors heat an all ,get it, but lot of us hot rodders like to keep stock look especially for the law , rather be driving!. So for the 30s 40s 50s 60s cars/rods with heap of clearance under the bonnet/hood. Some of us with a mint 57 chev ,club meets/weekend runs odd 1/4 mile run car don't like to cut holes in our pristine bonnets/hood neither does the law or have the $$ for a turbofabricated set up on a classic car, I see as the best option for the $$s spent without much fabrication AND go back to stock in a weekend believe me had to do it back in the day lol . Richard a fairly stock 454 and beg borrow or steal all low blows 144 177 192 250 from everyone anyone for a test everyone will watch!! Spin them till they run out of puff or heat up ,limitations! Of a bolt on!?? Different fuels!! too for cooling, all single carb!! Perfect for this 600hp bracket. Cheers Richard sorry about my Aussie lingo bonnet/hood lol
Frist!