ccstarnes7

Hey guys as i posted before im looking for ls6 heads and today a add came up on craigslist for a ls6 engine. If i could get it it would be great. My question is how can you tell if its a true ls6? i used the search tool but could not find anything.

this is the only discription:

Ls6 and t56 trans approximate 85000 miles out of Cadillac. Complete with all exces. And wiring harness

JohnS Z28

iTrader: (1)

casting number on the heads should be 243 to start

ghardester

If it is out of the car ask for the engine casting number. It should be on the rear of the block on the drivers side.

z-maro

iTrader: (18)

It will be very hard to tell with 100% confidence because, and correct me if I'm wrong, even if the numbers check out that it is a LS6 block and has 243 heads, it could really be just that, a LS6 block with 243 heads, but not have the LS6 cam ect... There was a small number of '01 & '02 f-bodes that came with a LS6 block, but that doesn't technically make the engine a LS6.
If all you are after are the "LS6" heads, then it really doesn't matter what cam and block it has as long as it has 243 heads on it.

Mattyfresh89

looks like the correct P/S reservior

ccstarnes7

Thanks for the info guys! Sadly the guy wont email back. So it looks like ill still be looking around

redtan

iTrader: (5)

If it's out of a CTSV, it's an LS6.

FASTFATBOY

iTrader: (23)

CTSV had 799 casting heads on some didnt they?

02WS6SSZ71

iTrader: (20)

What he said. Prolly the easiest way to tell would be to check the tail housing/bell housing on the trans...that'll let you know if it's out of a CTS-V, and if that checks out, it's prolly an LS6 out of a CTS-V