cam specs
Thread Starter
Teching In
Joined: Mar 2008
Posts: 15
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From: Belvidere
the cam i have is a patriot performance cam and i need to know the base circle so i know who long of pushrods i will need i was told that the pushrod i will need are .100'' longer but i am not sure of the base circle
Thread Starter
Teching In
Joined: Mar 2008
Posts: 15
Likes: 0
From: Belvidere
well i talked to the place that made the cam and he gave me some specs but he said i think right after he told me well i don't want i think i want the real spec but if what he told me is right than the base circle of the stock cam to the new one and the new one is a .100'' smaller so my teacher told me that i will need pushrods .100'' longer and he has been doing this for a long so i just want to know if anyone can find the real spec
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TECH Senior Member
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
There is no way you need .100 longer pushrods unless you are running ETP heads 
Trust me 7.425s will be super.
Base circle on That cam is smaller by around .07x, take the effective radius .03x, so 7.425s will put you real close to stock preload.
Always stay a bit under, never go over.
Trust me 7.425s will be super.
Base circle on That cam is smaller by around .07x, take the effective radius .03x, so 7.425s will put you real close to stock preload.
Always stay a bit under, never go over.
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Verdad Gallardo TECH Senior Member
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
How much noise? might be other than preload related. Lifter or rocker?
What else are you not telling us? give full mods.
also check for exhaust leaks, they can sound like lifter or valvetrain noise.
What else are you not telling us? give full mods.
also check for exhaust leaks, they can sound like lifter or valvetrain noise.