heres the cam that works good hyd roller 621/621 @050 238/246 lc108 or you could go to 621/621 @050.246/254 lc108 but you need more gear and stall .solid roller you i would want to stay with246/254 629/629 cl108 if you have more stall then go up on dur 254/260 .629/629 cl108