Accually we're both right, a long stroke, small bore has more on the low end, add that to gears and ya got it, but they don't rev worth a durn, ya don't want to run em 6000 rpm all day. I think that and the 292 Chevy/GMC 6 were the only old type left after 63-64, farmers always were the best customer for these. Durn things will still pull at around 500 rpm, but will over heat on a hot day.