I already dropped from a 3.35" pulley down to a 3.15"....don't figure I can go any smaller with that but what about upping the crank pulley? ATI makes a 6% over for my truck....y'all think it's worth the hassle?

 

If that's all that's left and you're not over spinning it too hard already (I am not familiar with dodge pulley ratios) I'd say go for it. Just beware of belt slip if you're on the borderline of it being a problem already. Are you still running a 6 rib setup?

 

6 rib is all that's available for my truck so I'm stuck with it. And I'm not spinning the blower hard at all. If my math is right only about 51,500 rpm vs 65,000 max. The 6% od pulley would kick it up to 55,600 rpm. I'm not sure that small increase will show any appreciable gains.