KW Baraka

iTrader: (7)

Besides the bore size, what are (if any) the differences between the LS3 and the LS7 head gaskets?

Thanks!

KW

tech@WS6store

iTrader: (2)

Coolant passages are different. Im trying to recall if it is due to the block or head, but i do know they shouldnt be used on an ls3 engine even overlooking their bore size diff.

KCS

iTrader: (20)

I've read the LS7's are different but I honestly can't see it.

Double06

iTrader: (1)

The little steam holes are moved out a little to accommodate the bigger bore. The top ones you will see are moved up/in a little. Also the lower ones are moved down a little but are less noticable. Also holes in the back are a little different as the head holes are moved over for the bigger bore. I had to figure this all out as I have an ERL block which has a LS2 base but and LS7 head. The block holes are about the same in each it is the head that is the driver when picking out a gasket.

KW Baraka

iTrader: (7)

Thanks guys.

The reason I ask is that I have a line on a new set of TFS LS7 heads. Just need to sort out the little detail before I ****** them up.

They'd be going on my 429ci LS3.

I guess I REALLY should've asked "which head gasket" to go with; LS3 or LS7.....

Yeah.....darn near identical.

KW