Originally Posted by runn141
i dont know the bore and stroke of the pontiac but the chevy 400 is 4.125 and 3.750 stroke. i think the reason sbc 400 is hard to find is its runs better i know alot will read this and disagree, but ive seen this battle too many times.
Ehhhhhhhhhhhh, the Pontiac 400 has the same bore and stroke as the 400 chevy. It has 3 inch mains that soak up 80hp from the overall flywheel horsepower figure, not!