blk99sleekbeak

iTrader: (2)

Is there any shimming necessary if you use dual springs?i was planning on doing my own cam install in the next month or so when i get the rest of my parts.I am using the Vengeance racing vrx5 cam with the PRC spring kit.I was told that sometimes when using dual springs you have to use shims to get correct preload and spring height.Is the true?if so i probly wont be doing the install myself

JPH

iTrader: (2)

The shims that people are reffering to are for the valve springs to obtain the correct installed height. They go underneath the locators. Your pushrod length will determine the lifter preload amount. Some have shimmed there rocker pedastal bar, for different geometry, but thats not a common thing that I see of hear alot about.

blk99sleekbeak

iTrader: (2)

I ordered 7.400 pushrods.Im not trying to change the geometry.So with the set up im going with will i need to shim anything?using stock heads,no milling or anything.

JPH

iTrader: (2)

I doubt it. Those PRC kits usually come in around 1.780-1.810 and 7.400 usually works out fine with tolerable preload.

blk99sleekbeak

iTrader: (2)

Will i need to measure anyway?if so what tools are needed and how is it done?a link to a write up will work also