How Much Horsepower Required to Cruise Comfortably at 70 MPH?

318willrun said
why wouldn't the 340 be the same?? 340 and 318 have the same stroke.

i guess your right
RPM at MPH is a simple mathmetical equation based on transmission gearing, rear end gearing and tire circumference

but the 340 better have more power then the 318
so i still dont really get the question...unless hes just bragging hes getting a 340?