Big bore 427
 

Anyone built a 3.76 x 4.50 motor? Looking to keep the tork in hand and make
650 h.p. On pump gas. Figure to spin it 7 to 7500. Solid roller with high end valve
control stuff.

No but that would be a great combination. Should rev to the moon and maybe kill a little low end. I think all the truck pull engines are big bore short stroke. Give it a shot. Will most definitely like a solid roller rpm range.