9sectruck

iTrader: (9)

Im helping a guy build a engine using the stock ls2 rotating assembly for nitrous. well any way we pulled is ls1 out of the car and started pulling the parts off the ls1 to reuse on the ls2, we got the heads off and seen where the pistons where just kissing the valves on both valves.
the cam is a torquer 2 cam on a 112.
so for ***** and giggles I wanted to see what the piston to valve clearance was going to be on the new build, same thing the valves touch the pistons at one point in time through the stroke.
how is this possible???
the cam is set in at straight up, 241 heads, 1.7 rockers, prc springs that did check out fine on seat and open pressure
how and the hell are guys getting away with ms4 spec ****
let me what you guys think

S10xGN

iTrader: (11)

Damn, that's my setup but on a 113° LSA... Have the heads been milled? Thinner HG's?

9sectruck

iTrader: (9)

.0051 gasket, never been decked or nor have the heads been milled.
did get ahold of a buddys tq2 cam that was cut on a 114 just to see if any difference. there was but not near enough .0006 was the best it had