Originally Posted by gregsdart
Originally Posted by JERICOGTX
The only added expense when rebuilding the engine is a crankshaft. Why mess around with a 50+ year old crankshaft? I see no reason not to do it.
to add to Jeffs comment, more torque means a sweeter running low rpm motor. My choice would be as big a stroke crank as will fit in my oil system plans. Do a search on what will fit if you plan on an internal (stock) pickup. 4.375 might clear , but i am not sure. Cam choice should match the restrictive intake and exhaust, focussing on torque. It may be best to go custom on the cam, and it may be as tame as 228 at . 050 and less than . 500 lift. The end result should be like a stock 440 on steroids! Brutal torque, shifts at or below 5000 rpm. FUN!


4.250 stroke is about max. Since the 4.250 crank uses 2.20 Chevy rod journals, there is less fitment issues than a 4.150 stroke crank, and Mopar rod journals. 512ci is a perfect size street engine. More cubes, and torque, mean you can use a higher gear ratio as well.

69 GTX 68 Road Runner