Ouch $$$!
I have no idea what the limiting factor for stroke is in the GMC (rod shoulder to cam, to bottom of cylinder wall, etc.), but if you're going to weld it you could use a longer piston, even longer stroke, and ordinary shorter aftermarket rod, like the common 7.25" BBF, BBC, BBM.
Last edited by panic; 02/24/10 03:10 PM.
