The rocker arm ratio has a lot to do with how the motor reacts to any change in the valve train, especially lift and duration off of the seats work
I ended up with Isky RR602 solid roller lifter grind for wedges that had the slowest opening ramps I have ever seen when degreeing that cam, it was horribly slow getting to .050 lifter rise, HORRIBLY slow shock
It ran fine in all three motors that I had installed it in but it was not as fast in the 60 Ft. times or on the top end MPH in the 1/4 mile with better cams in the same motors shruggy work

Don't forget that a lot of cam development was done way before computer where use for that function, a lot different technology back then shruggy
I think Mark Heffengton was one of the first, if not the first, to use modern technology in designing solid roller drag race cam lobes back in the early 1970s twocents scope

Last edited by Cab_Burge; 01/17/21 10:57 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)