ken13400

I want to put a new cam in my internally stock 99 Z-28. Is there any other way to figure out you pushrod legth without taking it all apart and using a pushrod measuring tool? I want to do the instal myself and would like to order the cam, springs, pushrods and rockers all from COMP. When I called the COMP tech line, the guy told me there is no other way to figure out the length. If I understand everything right, COMP should be able to tell me exactly what I need as long as my motor is stock right? Anything would be appriciated.

ken13400

no one ????

TAQuickness

iTrader: (28)

Unless you actually measure it, you are making an educated guess at best. A push rod length checker is about $20. Do yourself a favor and get one. Also check out the cam guide sticky for more info on how to set up your valve train for a new cam.

BadAssFast

iTrader: (2)

You will need two things patience and a push rod checking kit. It's not to tough to pull off coil packs and valve cover from drivers side. I wiped out a set of lifters and finished off my cam bearings with a 0.05" too long push rod. I think you can physically measure preload and tell. We used an adjustable PR, light spring...pumped the cyl with air to hold up valve. Then a dial indicator gave us measurements.
Don't rush it. 7.4 should be okay with all stock replacement...I needed 7.35.

c5dream

iTrader: (1)

Don't guess, I am with TAQuickness

ken13400

thanks guys. I'll get the pushrod length checker.

BadAssFast

iTrader: (2)

Man i'm glad to hear that. Whether or not my PRs being too long had anything to do with wiping out/finishing off my cam bearings, better to be sure. There is a "difference method" (what I call it) ie. marking high/low positions of the valve train...search on preload.

redtail2426

iTrader: (10)

you can also do it by measuring the base circle on the cam and doing a little math,thats the way i do it.