Probably will be dropping the pulley down on my Radix to a 3.1. Presently at 3.25 from the 3.4 that was shipped with it. With the cam install I did a while back the boost dropped from 9ish PSI down to 6psi with the 3.25. Want to pick this back up as it ran well at 9.

Thinking I should probably consider a smaller belt now. It has the one shipped with the unit. What lenght is it? I've also upgraded the alternator to a 145 amp unit which also has a smaller pulley. Any suggestions on what length to drop to? I've heard GatorBelts are good replacements?

 

I have a 3.1" pulley and run a 112.5" belt.

 

I was getting slip with the 3.25 and 112.5, so I got a 111, then more slip with the 3.0, so I have a 110.5 - smallest I think they make or at least that I know of...

 

Thanks guys. Think I'll start with the 112.5 and go smaller if I need.