Cool28

iTrader: (2)

I'm trying to find a lq4 block that is a direct replacement for a ls1. I seen listings but don't know what part number block I'm looking for. I know the early lq4 block had everything in the same place sensor wise as the ls1.

gagliano7

I am pretty sure all lq4 blocks will be a direct replacement except for the early ones 1999-2000 that had a longer crank. I also know the lq4 is missing one hole in the block compared to the ls1 for the accessory bracket. People just drill and tap them.

JRENIGAR

iTrader: (37)

Any gen III block from 2001 to 2007 should work.