OP:
Why aren't you going with a factory longblock?? There are guys running a nitrous plate setup just aft of the throttle body with a smaller pulley and Diablo tuner running 9's in a factory weighted (~4500#) hellcat! You don't really need any more stroke; just add boost. The factory stuff is pretty dang stout and for the price of a longblock, you might be wasting money going a different route.
knyech1-
'71 Sassy Grass Demon 340/904. Pump gas, 1.61 60ft, 7.439 1/8 @ 95mph, 11.824 1/4 @ 111mph
"Not too bad for a pump gas 340, full of used parts and hillbilly ported stock heads." - V.B.
'03 2500 5.9L HO 6-spd on 35's. 395hp/755ft-lb at tires.
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