Cam can move torque curves up and down the rpm scale but rod length is the key factor for max torque at low rpm.
Course stick the cam I have in a 302 and it won't idle much less produce much torque but we have to have some kind of apples to apples comparison. Got so many variables like dwell times, piston speed, etc, etc.
Why do diesels make so much torque- one of them is rod length. Cummins 5.7 has a 4 3/4" stroke. Only 6 pistons... yeah, apples to apples right? lol
302 with 8 cyl has a 3" stroke appr 230lb ft
300 with 6 cyl just shy of 4" appr 230 lb ft with 2 less cylinders