turbocreeper

iTrader: (3)

need to stuff some new pistons in and i remember reading somewhere u can only go .07. is this true or am i stuck with .05 and more expensive pistons then i need. thanks

9sec93

iTrader: (67)

the actual bore of the LS1 is 3.898 so going .07 will give you a 3.905 bore which is common for aftermarket pistons.

david vericker

iTrader: (1)

No! .005 yes .... .007 maybe. The newer LS1/LS6 blocks max out at approximately .012.

david vericker

iTrader: (1)

You do mean 3.898 + .007 = 3.905...right?

RARON455

iTrader: (35)

Yes as he stated,, 3.905 is really MAX bore on an LS1 block.

david vericker

iTrader: (1)

Wrong! You can go more than .007 on the newer LS1/LS6 blocks if necessary. The 97/98 blocks are more restrictive when it comes to honing than the newer revised blocks.

turbocreeper

iTrader: (3)

thats why i stated its a 98 block. so no i cant go .10 over????

bjamick

iTrader: (31)

Either go 3.905 or get an iron block.

turbocreeper

iTrader: (3)

benefits going .07 over rather then .05?

turbocreeper

iTrader: (3)

sorry guys i searched and cant find what im looking for

9sec93

iTrader: (67)

3.905 pistons seem to be more common

turbocreeper

iTrader: (3)

and those are the .007 over pistons?

bjamick

iTrader: (31)

Yes .007 pistons will be on the shelf items. Or you can go 3.910 which will be the max you can go on an ls1 block without re-sleeving. But 3.910 pistons are made though and I think are on the shelf to.

hiltsy855

iTrader: (35)

3.905" is .007" over not .07" over. The stock bore is 99mm which is 3.898". Some companies offer a .25mm oversize which is about .010" over, probably too much.

turbocreeper

iTrader: (3)

thanks guys. all my questions answered

david vericker

iTrader: (1)

Really,and I though that 3.998 bore would work just fine. Your opening up the cylinder by thousandths (.005) not hundreds (.05) but,if you insist give it a try...just kidding.

If I were you the .005 is the maximum I would go on a 98 block. There is no benefit going larger...it doesn't even equate to one cubic inch...good luck.

laytoncamaroz28

iTrader: (10)

what would be wrong with just a hone and new rings with the stock pistons and file fit the rings?

9sec93

iTrader: (67)

i caught that too but figured evryone would know what i meant.

turbocreeper

iTrader: (3)

think he had to take it out the .005 to get the cylinders right. believe me im not trying to spend the money on these pistons for the 98 block. id rather wait.

PREDATOR-Z

You hone to 3.905.