Generation IV Internal Engine - 4" bore block with ls1 style heads

I have a pair of 60cc, tfs "as cast" heads designed for an ls1. Would I run into any problems using a stock LS2 or L92 shortblock? Would the chambers have to be enlarged? This probably has been covered before, must not not be searching with the perfect combo of words :D TIA-Garrett

You could open up the sides a little. Will help unshroud valve and get you a little more flow. You will reduce your compression a little with the larger chamber.

im running a 3.90 bore head on a 6.0 with no issues.
it does shroud the valve a lil, but i got a deal on them.