its a generalization,, more power the engine makes the quicker it will acclerate the car theefore acclerating the engine/valvetrain quicker,,, common sense..

you could have some 572 with a small hyd cam that has a 2.73 gear that can go 11's , or something to that nature,, that makes my reasoning fail,, but again its a generalization.

like a 590 cam in a 4000lb car with a 440 that is pump gas and runs 12.50's,, then take a 590 cam in a 528 or 540 that has high compression in a 2500lb drag car,, the spring requirements are not the same,, again common sense..

i have "general" rules for setting heads up based on cam, rocker ratios, rear end ratio, total lift, how many gears, how quick the car is overall,, most people put in the rear end ratio to max engine speed at the expected targeted 1320ft mark.