454 performance
#1
Intermediate
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454 performance
Ok guys give I want to hear your performance recipes for the 454. I am starting with a 1987 peanut port head 454 (originally a TBI motor). I do not plan on revving past 5000 rpm. My goals are conservative but I would like 340 horspower at the flywheel and at least 450 lb ft. I would like the power peak to be around 4000 rpm. What cam along with a 750 quadrajet, performer intake and headers will get me to my goals. :D
#2
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Location: CORVETTE 77 385 C.I. TEXAS
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Re: 454 performance (srmcclean)
Hedman headers will work fine & good for much more.
Comp Cams 270H or XE268 will put you over as your goals are too low. They are good min. 454 cams for autos.
:cool:
Comp Cams 270H or XE268 will put you over as your goals are too low. They are good min. 454 cams for autos.
:cool:
#3
Melting Slicks
Re: 454 performance (Ganey)
I've used the Edelbrock Performer cam before in a Poncho 400,and it would pull 5000 easy,idle like stock,and I'm sure was better than 350hp.I'd have to agree that your sights are a bit low for that much motor.You realize your gas mileage is dependant on displacement. You may as well pull 450-500hp if you're going to get 10mpg anyway. :yesnod:
#4
Safety Car
Re: 454 performance (srmcclean)
I would like 340 horspower at the flywheel and at least 450 lb ft.
So you are going to be using the P-Nut port heads? The cams that Ganey recommended should work fine for you because those P-Nut heads are going to be done making power around 5000RPM if not slightly sooner.
#5
Safety Car
Re: 454 performance (srmcclean)
as you are very conservative on RPM , (5000) The xe262 , range is 1300/5600 rpm, the xe 252 is a 5000 rpm cam , with monster tourque will work with peanut heads...just my 2 cents :seeya
#6
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Re: 454 performance (srmcclean)
Hey! I just did the following mods with oustanding results to my 454 LS5 engine. I had a valve job to the stock heads and added a 268 Comp Cam kit ( new springs, lifters, timing chain, retainers, etc), new Comp Cam roller rockers and pushrods.
The seat of the pants were AWESOME. It is smooth, powerful and free reving. Best results I ever experienced in modifying an engine! The motor stock is 365 HP and I think it must be pshing 400+. I'll probably dyno this spring. By the way the car is a 71 TT, 454, 4speed. Good luck, Fred the fryguy :steering: :D :cool: :cheers:
The seat of the pants were AWESOME. It is smooth, powerful and free reving. Best results I ever experienced in modifying an engine! The motor stock is 365 HP and I think it must be pshing 400+. I'll probably dyno this spring. By the way the car is a 71 TT, 454, 4speed. Good luck, Fred the fryguy :steering: :D :cool: :cheers:
#7
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Re: 454 performance (srmcclean)
Thanks for the reply guys, I hope the guy hasn't sold the 454 yet I can't pick it up until tommorrow evening!! If I get more than 340 horsepower I will be thrilled.
Randy :cool:
Randy :cool:
#8
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Re: 454 performance (srmcclean)
It seems like everyone is recommending the Comp Cams product, but I'm buying either the Crane "PowerMax Hydraulic Roller HR-288-2S-12 IG", or their solid roller "SR-238/350-2S-12 IG" (very similar to hydraulic, but slightly more duration/lift)
There was a nice build article using the hydraulic roller in the "How to build Monster BBC's" book. When I plug the cam into DD, it has a nice torque curve to about 4,200RPM.
There was a nice build article using the hydraulic roller in the "How to build Monster BBC's" book. When I plug the cam into DD, it has a nice torque curve to about 4,200RPM.
#9
Senior Member since 1492
Re: 454 performance (srmcclean)
If I get more than 340 horsepower I will be thrilled.
Randy :cool:
Randy :cool:
#10
Race Director
Re: 454 performance (1970 Stingray)
If I get more than 340 horsepower I will be thrilled.
Randy :cool:
Hang around here long enough & you'll be shooting for 600! :lol:
Randy :cool:
Hang around here long enough & you'll be shooting for 600! :lol: