LIL D

I am wondering if anybody here knows if there are any piston to valve clearance issues using a e303 cam and 1.7 or 1.72 rocker arms with stock pistons.

mattdel

max valve lift the stock pistons will work with is .544, add .020 to your cam's spec lift with those rockers.

LIL D

i heard it was.030 for 1.72 but either way i should be fine if i used an e cam and 1.72 rockers

LIL D

would anybody happen to kknow how much hp stock crank and rods can hold

94gtcoupe

more than the block will

LIL D

so like 300hp n/a with maybe 100 shot should be no problem

94gtcoupe

stock block is good for about 400-500 WHP depending on how the power is made

LIL D

im only looking to make like 300hp n/a with maybe 100 shot in the future

94gtcoupe

you'll be fine, as long as your not dumb with the nitrous (sp)

FullAuto

You can't just add .020 or .030 for 1.7 rockers. It's a ratio. .498 / 1.6 = 311.25. The lobe life is .311. So, 311 x 1.7 = .5287 lift, .311 x 1.72 = .53492 lift.

You also can't just say .544 is max. It's all about valve timing. I've ran more than .544 on both intake and exhaust sides with a stock shortblock.