SStroked 410

I have some from my last set up and they were comp heat treated 7.400

my set up is in my sig
and might have 6.0l milled a little to get 67-68cc
also with this big of a cam can I run comp OEM's lifters safely? I thought about the comp R's but heard theres a lot of adjusting to run them
maybe I'm wrong?

Been thinking about running those new HS rockers but want to make sure I wont need a adjustible rocker

thanks

SStroked 410

anyone?

Crowley

I was told with the COMPRs you will need adjustable rockers or you will need to get different sized pushrods to get the correct geometry.

I'm definately no expert though ..

thanks,
Crowley

SPANKY LS1

iTrader: (24)

Comp makes an adjustable pushrod (P/N #63-7702-1) that is ~$20 that you can make into different lengths (6.800"-7.800" in .050 increments) and setup the proper preload with that, then order the pushrods that length. Thats what I'm getting and am going to use to determine what length I need. That way, I can order a pushrod that should give me the proper preload without shimming much.

DESCRIPTION FROM WEBSITE: P/N #63-7702-1 Comp Cams pushrod length checker - Designed to be installed as a "test pushrod" to check what length pushrod you need for proper valvetrain geometry. Adjustable from 6.800" to 7.800" in .050" increments.

SStroked 410

you know thats a good idea, I think I saw thaton TR's site.

T/A Medic

iTrader: (1)

you will also need to get a checker spring ... basically its a very very weak spring you put on so you can rotate the assymbly and check your geometry and PR length... basically you can push it closed with ur hand ...

I had T&D Shaftmounts and with milled heads .015 i think they were to get the geometry correct i had to run 7.25 PRs

Beast96Z

iTrader: (21)

If your heads are unmilled, you should still be around a 7.400 pushrod. Maybe a 7.350 because your cam is so big. Best thing to do is set up one cylinder with your stock pushrods, set the pre-load, and rotate the motor. Watch the rocker tip to see if it stays relativly balanced across the center of the valvestem tip. If it tends to stay more to one side, you will need a diffrent pushrod.

SStroked 410

thanks

I'll try that once I get this thing together