Just a fwiw on "issues" - Piston to Valve is very close on the stock 6.1 also.

We ended up with .068th using a 110 lsa and a 218/227 duration.

The LSA probably hurt the deal....But for the life of me I have no idea how guys are running 230+ duration cams with stock slugs.......

Modman Intake - appalling bottom end signal, HUGE pump shot need to overcome a lean bog..even with two carbs.....and a full height divider......

Valve springs - PSI 1511 requires custom shims, valve seals and retainers - Craig from Thitek has a great kit.

Last edited by Moparmal; 11/03/14 11:47 AM.