My factory stock '68 Plymouth Fury III had a 383, auto, 3.23 and ran 15.2's. I didn't think that was so bad for a car that weighed 4350 at the start line. I don't think I could have pulled the 383 for a factory stock 340 swap and ran faster. I think the 340 would have struggled with the weight, 3.23's and a factory tight converter.
