1958

what is the compression height of a stock ly6 piston and how far in the hole does it sit thanks

1958

i picked up a 2008 ly6 havent pulled it apart yet
. wanted to upgrade the pistons and rods to forged units. thought i would order pistons and rods before i did as long as cylinders look good
n

G Atsma

Most all LS engines pistons are either flush or slightly (.001-.004) ABOVE the deck.

1958

thanks

Che70velle

iTrader: (6)

1.340” is common compression height for LS engines with factory stroke and 6.098 rod. The confusion comes from truck blocks having a 9.23 deck height and car (aluminum) blocks having a 9.24 deck height. I bought a set of Mahle pistons with a 1.340 comp height for an LY6 and they worked great. Link below...

https://www.summitracing.com/parts/m...make/chevrolet

1958

thanks Che70velle that what i was looking for

Jimbo1367

Are those pistons 2618 or the other 4xxx forging?

Launch

Factory ly6 pistons are flat tops but dished to lower CR.

1958

Jimbo if you were asking me about the pistons that are in the engine i haven't taken the heads off yet

Jimbo1367

No, I meant the ones from Summit supplied ones?

Che70velle

iTrader: (6)

2618 or 4032...but I don’t remember which. I want to say 4032...

Jimbo1367

that’s was what I was wondering. Thanks