Heads and cam build help!

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Aug 29, 2014 | 08:10 PM

uptonls1

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Heads and cam build help!

I'm in the process of doing a heads and cam swap on my 99z28. Stock bottom end ls1. I just bought some prc stg2.5 5.3l heads. They have 59cc chambers. I want to run the vrx5 camshaft. 236/238 .601 .605 113+2lsa. I'm not wanting to fly cut. I'm curious as to how close it will be with the small chambers. I don't not wanna flycut and will go with another cam if need be. Has anyone else ran a similar setup with out Ptv clearance issues? Any help is greatly appreciated. Thanks in advance!

Aug 29, 2014 | 08:40 PM

99Bluz28

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From: C. V., Kalifornia

IMO, I'd plan on having the pistons fly cut with that cam, without fly cutting the pistons I'd take the intake lobe duration under 230..

Aug 29, 2014 | 10:17 PM

uptonls1

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I have a buddy with same heads and he's running the futral f14. 232 234 .598 .598 112 and he didn't have to fly cut. I have little to no knowledge on what portion of the cam specs goes along with Ptv clearance. I thought it was the lift that came into play and .601 .605 didn't seem to much larger. Any way I could use thicker gaskets by chance?

Aug 29, 2014 | 10:40 PM

HCI2000SS

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From: Howell & Fenton MI

That exact combo should clear

Aug 29, 2014 | 11:20 PM

uptonls1

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im hopeing so. im trying to do some more research. ive changed my mind so many times. i really like this cam but didnt wanna waste the money if it wont work with the heads

Aug 30, 2014 | 08:28 AM

HCI2000SS

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From: Howell & Fenton MI

It should be fine, but call one of the big vendors in here just to be 100% sure

Aug 30, 2014 | 11:39 AM

uptonls1

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Thanks again. I'm gonna give vengence racing a call. I've also been looking at the sns stg 2 from tick. But not sure if it's large enough for my goals. I want to be in the low 11s in motor and 10s on 100 shot. It's an a4 car with full suspension. 3:42s, locker and 3600 stall