pulley ratio

Mine is underdriven because I spin to 7200 on a fairly regular basis; so 1.09 if the belt stays on, .......

I build my own brackets and spacers most of the time , I guess because of my oddball combinations. I use a straight edge across the pullies , and have never thrown one . I even had diff manufacturers pullies on my 406 vega -------------so no problems there. IMG_0474 (1).JPG Alternator is where the fuel pump would normally be.