That's part of the reason I used an 8" serpentine crank pulley.More belt contact.
If you look closely, it was actually a 10 rib pulley.
I really did not have any belt slipping problems w/the 6 rib set-up.
I used a factory GM 1990 Camaro V-6 belt spring loaded belt tensioner, so the belt was never really all that tight ,even w/the outside idler pulley I added,I just wanted to have more belt wrap around the pulleys,just in case.
My friend had a roots type B&M 162 SBC blower w/a 6 rib belt & it would slip & burn up the belt all the time.
MBHD
