lq9 and lq4

[thunder550]

LQ4 is lower compression with a dished piston, LQ9 is higher compression with a flat top piston.

In the earlier years (2004 and earlier) the LQ4 had weaker rods, but starting in 05 the LQ4 and LQ9 got the same rods.

Block and heads are the exact same on both.

What are you wanting to swap from the other LS motors?

Dealer is gonna be your best bet for gaskets and such. Some of the LS speed shops have them too, but they all sell GM parts when they do.

[87scots]

hoping to swap maybe the heads, cam, pistons and such basic internals so are the lq9 and 4 computers the same?