slidestyle

Hey everyone, the time finally came yesterday that i become a first time owner of an 02 ws6 ls1.


Basically im pretty broke right now after the purchase im just goofin around with it and i know of the possibility that i might have an ls6 block on my hands with this year model and i also know im not at a huge advantage if i did have it but it would still be cool to know if i did or not

I did something unheard of being a NEWB, I used the search bar before making this post and found this thread (https://ls1tech.com/forums/1740886-post8.html) but the pictures dont show and i didnt find it informational to me?

so basically, im just trying to be pointed in the right direction. I jotted down the block number(12559378) so i am prepared, i just need to know how to figure it out. Thanks alot!!

blk/slvr02ss

iTrader: (21)

There r no casting dimples on the front of the block just over the water pump and under the intake from what i was told !!!

slidestyle

i'll check that but i would really like find a more in depth way of knowing

Mako77

The bed of my truck looks just like yours. I'd be interested in what I have too.

cbruer

iTrader: (34)

Im not sure that the blocks were different but the 243 heads on the LS6 and internals in the block were different but I am pretty sure they used the same block.

ghardester

The block casting number on the rear of the LS6 block is 12561168, so no, that's not an LS6.

ghardester

Here is a PDF to casting and part numbers from Summit Racing. Your 12559378 is a year 2000 block.

https://summitracing.custhelp.com/ci/fattach/get/44974/

Mako77

sweet that's what mine is. thanks for posting.

yaknow

iTrader: (2)

Thanks for the link

bww3588

iTrader: (49)

Your at an advantage with the ls1 block unless your going for extended high rpm use.

The windows cast between the mains of The ls6 block make it weaker than the ls1 block. Unless your building a serious road race engine, I wouldn't want an ls6 block.