The stock rocker arms vary from 1.42 ratio on the intakes up to 1.55, the exhaust stock ductile iron rockers are worst whiney scope
I check around six stock OEM sets back in the day and found out how bad they really are shockpuke shruggy
I heard of Rocker Arm Specialty that use to blueprint and accurize ductile iron rocker arms shortly after selling that race car, they use to be in Cottonwood, CA before they sold out, the new owners move the shop back east and ended up going bankrupt several years later, why I do not know shruggy
Shop around to see if anyone is still doing that kind of work, or buy new good quality race ones work scope up

Last edited by Cab_Burge; 12/03/22 09:42 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)