Vortec valvetrain????
08-08-2007, 09:36 PM
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Car: 00' rcsb
Engine: Little boosted 5.3
Transmission: 4l80e
Vortec valvetrain????
Ok just got a set of vortecs for almost free. My power goel is around 450 HP and close to the same TQ numbers. What cam will match up good with these heads, will have them ported and polished, bigger springs. ect... and also what size rockers should i run? 1.5, 1.6? would i need to get the heads cut for bigger valves to make this kind of power?
any help is much appreciated.
Thanks
Colt
any help is much appreciated.
Thanks
Colt
Last edited by 1983sc; 08-08-2007 at 10:04 PM.
08-08-2007, 09:38 PM
#2
Re: Vortec valvetrain????
As was in another post read this link. It will answer a lot of your questions.
http://www.nastyz28.com/forum/showthread.php?t=56505
http://www.nastyz28.com/forum/showthread.php?t=56505
08-08-2007, 10:00 PM
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Car: 91 RS
Engine: 350 vortec
Transmission: T-5
Axle/Gears: not the best not the worst
Re: Vortec valvetrain????
i would say the XE 274 if you are planning on a flat tappet cam or the XR270 for a roller... you would be around 420 Fwhp with 10:1+CR
08-09-2007, 12:22 PM
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Car: 00' rcsb
Engine: Little boosted 5.3
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Re: Vortec valvetrain????
http://store.summitracing.com/partde...CCA-CL12-568-4
would this be a good cam to run? i am planning on big stall and rear gears.
would this be a good cam to run? i am planning on big stall and rear gears.
08-09-2007, 03:34 PM
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Car: 91 RS
Engine: 350 vortec
Transmission: T-5
Axle/Gears: not the best not the worst
Re: Vortec valvetrain????
that is better than the 274 but you have to ask yourself... how high do you want to spin this thing to make power? what are you gonna do with it after you have built it?
08-10-2007, 02:10 PM
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Car: 00' rcsb
Engine: Little boosted 5.3
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Re: Vortec valvetrain????
I only plan on going to 6000 RPM i dont want to puch it further then that. this will be a serious street/ strip car that will see more track racing time then it will street time.
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