Some 01-02 fbodies came with a ls6 block

**mangus2k1ws6** · 09-12-2010, 07:59 PM

in another website I read that some 01-02 fbodies came with a ls6 block from factory. has anyone else heard this before or even confirm this? they say the difference you can tell is the ls6 block is duller in color than the ls1 block.

**Z28Thunder** · 09-12-2010, 08:03 PM

Some did come with the LS6 block but it had LS1 internals. You can tell by the number stamped on the block. The color part is just talk..

**Mr. Luos** · 09-12-2010, 08:04 PM

It is legit.

10% (roughly) from 2001 had the LS6 block.
25% (roughly) from 2002 had it.

Doesn't really matter that much...unless you plan on modding like freaking nuts.

**mangus2k1ws6** · 09-12-2010, 08:10 PM

Originally Posted by Z28Thunder

Some did come with the LS6 block but it had LS1 internals. You can tell by the number stamped on the block. The color part is just talk..

where would it be stamped? I am just curious

**mangus2k1ws6** · 09-12-2010, 08:12 PM

Originally Posted by Mr. Luos

It is legit.

10% (roughly) from 2001 had the LS6 block.
25% (roughly) from 2002 had it.

Doesn't really matter that much...unless you plan on modding like freaking nuts.

would you think it could add value to your car if you were the select few to have it? being more rare than others

**mangus2k1ws6** · 09-12-2010, 08:14 PM

I forgot to ask too what number is for what block?

**Mr. Luos** · 09-12-2010, 08:15 PM

Originally Posted by mangus2k1ws6

would you think it could add value to your car if you were the select few to have it? being more rare than others

Nope.

**justinmc978** · 09-12-2010, 08:52 PM

Originally Posted by mangus2k1ws6

would you think it could add value to your car if you were the select few to have it? being more rare than others

lol no. only a sleezy car salesman would try to get an extra buck by saying something stupid like that

**Z28Thunder** · 09-12-2010, 09:17 PM

Originally Posted by mangus2k1ws6

where would it be stamped? I am just curious

There is a number on top of the block behind the driver side head. It's quite difficult to see -- you'll need a telescoping mirror and a flashlight. I think the LS6 block number is 12561168.

**tatertot91** · 09-12-2010, 10:33 PM

if i remember correctly the LS1 blocks have a bullseye by the coolant crossover tubes and the LS6s do not
Easiest way to tell as far as i'm concerned

**mangus2k1ws6** · 09-13-2010, 02:23 PM

Originally Posted by justinmc978

lol no. only a sleezy car salesman would try to get an extra buck by saying something stupid like that

true.... i thought it would be cool to be one of the select few to have it

**mangus2k1ws6** · 09-13-2010, 02:27 PM

Originally Posted by Z28Thunder

There is a number on top of the block behind the driver side head. It's quite difficult to see -- you'll need a telescoping mirror and a flashlight. I think the LS6 block number is 12561168.

that's dumb. maybe when I do a head and cam job on it, I could have a better chance seeing or is there another way find out by vin#?

**justinmc978** · 09-13-2010, 02:33 PM

Originally Posted by mangus2k1ws6

that's dumb. maybe when I do a head and cam job on it, I could have a better chance seeing or is there another way find out by vin#?

no. only other way is to look at it side by side to an LS1 block, LS6 blocks have a slightly darker cast than LS1s.

**mangus2k1ws6** · 09-13-2010, 02:37 PM

Originally Posted by justinmc978

no. only other way is to look at it side by side to an LS1 block, LS6 blocks have a slightly darker cast than LS1s.

above they said that isn't true. I did look at mine and my block is pretty dull in color but I never compared it to another beside it

**justinmc978** · 09-13-2010, 02:42 PM

Originally Posted by mangus2k1ws6

above they said that isn't true. I did look at mine and my block is pretty dull in color but I never compared it to another beside it

it is most certainly true, ls1 and ls6 blocks were cast in different plants (IIRC, one in the States/Canada and one in Mexico) this resulted in a noticeably different cast.

edit: here is a pic and a website resource:

LS6 on the left and LS1 on the right. note the significant color difference.

http://www.vetteweb.com/features/vem.../photo_05.html

**tatertot91** · 09-13-2010, 02:57 PM

Does anyone listen?
Does your block have this little bullseye on it? i think there are like 4 on the front
Hard to see but only pic i got that shows it

**Cutlass** · 09-13-2010, 04:56 PM

**bluehawk2000** · 09-13-2010, 05:17 PM

the ls6 has more cooling ports to correct.

**dragonchick** · 09-13-2010, 05:19 PM

Originally Posted by tatertot91

Does anyone listen?
Does your block have this little bullseye on it? i think there are like 4 on the front
Hard to see but only pic i got that shows it

Yep, the bullseye is true. mine has the bullseye, so therefore LS1 block. A friend of mine also has an '01 T/A, but his don't have the bullseye, therefore LS6 block

He was actually the one who showed me that