SSpray

The great LS1 vs. LS6 block debate. I need 100% confirmation!

Yes, I know some 02 F-bodys got the LS6 block (and intake only)…

Here is the question. Does the 2001 LS6 block have the “bull’s eye” marking or does it not?
Does the 2001 LS1 block have the “bull’s eye” markings or not?

Thank you!

markss2oo1

If i remember correctly,
ls1=bullseye
I looked at my car when this debate came forth a while back, i have the ls1 block, and if my car was here at work i'd go look for you now to be 100%

JL ws-6

iTrader: (50)

Where is the mark that tells you which block you have? Anyone have a pic of it?

Country Boy

iTrader: (24)

The LS1 blocks have the bullseye and the LS6 do not.

JL ws-6

iTrader: (50)

where is the bullseye mark?

Country Boy

iTrader: (24)

Heres the picture of a LS1 block I did a LONG time again when I had the huge threads about it.

SSpray

And this holds true for 2001?

Country Boy

iTrader: (24)

I dont see why not.... LS6 blocks were cast in a different place I believe and made of a different material. Also, the LS1 block is shiney like a quarter and the LS6 block is a grey color. I can do a pic of a LS6 block tonight when I get home from work.

SSpray

Here is the info I found, incase anyone searches for this info later:
(this includes the 2001 LS6 block):

Get under car....Look up at the back of the engine....

On the driver side....Where the head meets the block....

You will see the casting number....

LS6 casting....12561168 any other number and you have an LS1 casting....

Country Boy

iTrader: (24)

You can just look at the color and the markings and tell instead of all that.