Valve spring shims what's the thickest I can use

Install LS6 Springs. Shit stock springs float on a stock cam

I don't have LS6 springs I have shims that I would prefer to use if they will be helpful, otherwise I would invest in the Comp Cam springs which fit without any modifications. They just aren't high on the priority list right now.

[geoffinbc]

Install LS6 Springs. Shit stock springs float on a stock cam

Yes, stock everything except the cam

[RacerX11]

stock 3500 springs?

[Joseph Upson]

My cam regrind is supposed to be good to at least 6500 rpm, since I already have shims from iron heads that I can use, what's the thickest I can use on the aluminum heads without coil bind bearing in mind I have a max cam lift of .468.

Shneider also stated that since they only removed .040 from the base circle of the cam I could still use my original pushrods without a power loss.

I'm still curious about whether or not the reduced preload will some how predispose the lifters to float.

This is on a 3500