phoenix305

how do you tell if a manifold is ls6 or not?

blkbird

iTrader: (28)

search....... it should be working right now.

v8hunter

iTrader: (2)

Most of the ls6 manifolds do not have egr and the bottom is flat instead of curved. Also if the throttle body hole is much bigger it is likely the ls2 instead.

2001NBMZ28

Look for a PN to be sure, they've changed over the years but you can still search it. My stock LS6 PN is 12561184 and located on the drivers side.

Blacker

iTrader: (3)

All LS6 Intake Manifolds do not have EGR and they are flat on the bottom.

TheBlurLS1

iTrader: (8)

Some of the SLP LS6 manifolds did have EGR. Some of the LS1 manifolds DON'T, so the EGR hole is not a very good thing to look at.

The flat bottom is the dead giveaway however.

The LS2 manifolds has a 4 bolt, 90mm opening. LS1/LS6 is smaller and has only 3 bolts for the throttle body.