Droptopws6

iTrader: (13)

Does anyone have pictures of the above pistons?

I'd like to see them side by side. I'm trying to figure out why the LS7 piston will fail in a supercharged environment but the LS3 appears to handle boost a little better. I basing this question off of failure threads I've read and a few guys I've talked to that have had failures.

I'm not sure if the tunes were bad in the supercharged LS7's or the pistons can't handle the additional cylinder pressure as well as LS3 pistons.

Or if they're the same besides diameter.

Anyone shed some light on this topic?

DietCoke

iTrader: (18)

I'd lean towards the ls7 **** sleeves flexing.

KW Baraka

iTrader: (7)

LS7 = 4" stroke

LS3 = 3.622" stroke

This means that the LS7 has a shorter piston, which effects placement of the gudgeon pin in the piston and the placement of the piston rings. I'm no expert.....but it would seem that in boosted applications, the shorter pistons have difficulty with the additional cylinder pressures they're subjected to by superchargers.

KW

Millenium Z06

I've always been told it the sleeves like Diet Coke said, sleeves are too thin for boost longevity.

Droptopws6

iTrader: (13)

Thanks guys.