Which blocks have 4 bolt and which blocks have 6 bolt?

Just like the title says:)

Thanks, the search was to crowded for me to find it.

If you are speaking of the LS1 they are all 6 bolt mains as far as I have seen, read. 4 in the bottom and a pair of them come in from the sides through the block,,,just like the hemi motor from the 60's/70's

Thanks, I appreciate it.

Actually, the Chrysler hemi engine from the 60s/70s was a 4 bolt main, two in the mains, two from the sides, but you are correct on the ls1 motor.