Just curious why bore size is the deal breaker. What does a big block chevy have for bore size? 4.250 in 427s and 454s and 396 was much smaller and they all make good power.
Because you cannot find anything in a forged piston for a hotter build for the Chrysler stroke and rod length, unless you have pistons custom made. That's a thousand dollar cash outlay. Might as well go 440.
