Troy5061

iTrader: (19)

Im still trying to figure out which direction I want to go, stay NA with spray, d1sc or turbo. Ive seen the a few threads with dished Mahle pistons breaking ring lands under boost but what about the flat tops? I have -6cc flat tops in my 383, anyone run these in a boosted application? Im spraying a 150 shot right now with no issues but thats not really that much lol, the rings are gapped for a 200 shot.

rotary1307cc

iTrader: (5)

4032 or 2618

9sec93

iTrader: (67)

I have the mahle flat tops in my twin turbo 383 and make close to 1k rwhp. It is at its limit though as I have destroyed a few of them in my old 408 at that power level. Also depends on if you are drag racing it and if going 1/8 mile or 1/4 mile.

Troy5061

iTrader: (19)

Its a 4032 alloy piston. Not looking to set the world on fire, I pretty much would like to have the power my car has on the nitrous all the time. 600-650rwp through a stalled 4l60e nothing close to 1000hp lol. Its a street car but I only live a few miles from the local 1/8th mile track so im there often. 9sec93 is your 383 an aluminum or iron block?

redtan

iTrader: (5)

Depends on how much boost you throw at it, what kind of gas you're running and what kind of tune it has.

I don't see why a relatively low compression ratio (~10:1) with a good tune and pump gas would not hold say 10-12psi of boost. That should be in the high 600s at the wheels.

9sec93

iTrader: (67)

it is an iron block with stock unported LS6 heads. there is link to the build thread in my sig.