SB Alternator Question

do small block alts have two grooves or one? I ask because I ordered one at the local NAPA with one groove. I will be using the V-belt system.

A/C uses 2, non A/C just 1 but you can slightly adj it's position with washers to make either one work.

awesome, thanks! And you really are rapid with your response!

in more ways than one.

'69 340 had one groove on the AC cars.