What rpm do you think peak hp will happen at?
Say 5500 rpm you can kind of figure it out, an average guy build is gonna make 1.15 to 1.25 lbs-ft per cid so say 1.2 average x cid = 438 peak tq.
tq at peak hp averages 90% of peak tq so 394 tq x 5500 rpm / 5252 = 413 hp @ 5500 and 438 tq around 1000-1500 rpms lower.
