Well I am not sure what you mean, but gearing is important and most high performance engines are set up for high rpm, high stall converters and tall rear gears, but still if you had a 270 degree cam that is not really set up for very high rpm and you should have had good power. I would think a truck would have a 3.55 or 3.70 rear gear and again that truck should have run good! After you posted, I edited my post and added some data for Ford flatheads of a type common in my high school days and by comparison the SBC-350 looks fantastic even with 882 heads which were part of the detuning and improving low rpm torque. I also remember my Dad's 1969 Chevelle and I recall that I thought it was very dangerous and the accelerator pedal spring should have been stronger. That '69 Chevelle was "wickedly fast" and if I get that performance with my 2500 pound 'glass '29 Ford roadster that will be all my heart can take at my age, but I can't wait!

Don Shillady
Retired Scientist/teen rodder