I can get ahold of a 406 sbc but the guy says it is balanced for an automatic, my question is does this totally prevent me from running it with a 4spd? Thanks
Could be...you don't balance to a transmission. The damper/crank/rods/pistons/flexplate(or flywheel) all need to add up to a neutral balance. The transmission (and everything downstream of it) is neutral balance also.He was told that it was balanced for his turbo 350. Do you think that he may have just been refering to the flexplate?