Gains for HS 1.8 Roller rockers?
06-13-2005, 09:37 AM
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Gains for HS 1.8 Roller rockers? Hi guys-just wondering what the typical gains from a set of stock 1.7 factory rockers are to the HS 1.8 roller rockers? This is on a 02 Z06 with AFR heads and the factory LS6 camshaft-car made 414 rwhp through the manifolds. I was thinking of doing the cheatr camshaft but this swap is alot faster and easier. I'm looking for a gain of 10rwhp? Is this possible? Thanks!
06-13-2005, 01:58 PM
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don't know about the HS rockers. but, here's what i got with the vinci/crane 1.8 accelerated lift rockers on the wife's 99 formula with stock cam.
dyno 9 before
dyno 11 500 miles
dyno 14 10 months later
dyno 9 before
dyno 11 500 miles
dyno 14 10 months later
06-13-2005, 02:02 PM
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The only thing is I'm confused about the pushrod lengths. Don't these rockers come in a kit with 7.25 pushrods? I'm currently using 7.35 since my AFR's are milled .040 and i'm running the thin cometic .040 gasket.
06-13-2005, 06:10 PM
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yes they do come with 7.250" pushrods. the vinci cranes are adjustable. so the .050" shouldn't be an issue. i'll post back after i consult with roger on it.
06-13-2005, 07:38 PM
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Originally Posted by Vortech
The only thing is I'm confused about the pushrod lengths. Don't these rockers come in a kit with 7.25 pushrods? I'm currently using 7.35 since my AFR's are milled .040 and i'm running the thin cometic .040 gasket.
ok, just got through talking with roger vinci. he said call and speak to him directly. that way he can get you the correct length pushrods based on what you have done. he wants to insure you have the correct geometry. 866-462-4500
