valve springs & rockers
Get some CompCam 1.6 full roller rockers, non self aligning. A set of hardened pushrods and a set of GMPP guideplates. Then you need a set of HotCam springs and a tune from madz28.com, a sponser. Should be worth about 25 to 30 hp.
Thanks
Josh
Good advice. If you want to do it right, go with the 7/16th rockers and studs, buy the CompCam Hi Tech pushrods and get a set of 918 beehive springs. That way you will be set if you throw a cam in it.
Just a thought regarding longevity. Aluminum rockers have a fatigue life that could come into play within the life of your engine if you keep it a long time, and I have been told to 'check them regularly'. However, I don't think you can non-destructively check fatigue cycles, and by the time a crack appears I think breakage is going to happen very very soon. to be safe, I am electing to get the Pro Magnums instead. Steel, and should last a lifetime, more or less. The flipside is that I think the LT4 came with aluminum rollers (Golds), so in that application they must be OK.
Anybody ever break an aluminum rocker body? Anybody have 100k miles on em?
Anybody ever break an aluminum rocker body? Anybody have 100k miles on em?
I am starting to think I got bad advice about needing to change them out. I asked around at work and started a post, and can't find anybody that ever broke one without also having other valvetrain issues. Must be ok. Fatigue concern retracted.
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oldschool
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Feb 9, 2016 09:21 PM



