correct.
My block numbers match to a LS6 block but I have 241 heads which makes it LS1 heads/pistons etc.
ALOT of crate LS1 long blocks after 01+ came like this because 01 was the first production year of the LS6 so they started giving long blocks the LS6 block but with LS1 internals. Its confusing as shit.
I will direct link you to it all on LS1tech…