The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 1972 Chevy C10 350 Charging issue, everything new

**Wrenchbender Ret** · 06-21-2021, 04:33 PM

It sounds like the belt is slipping. That 100 amp alt. pulls a heavy load. If you have a strong fan blade or a locked up fan clutch you are putting a heavy load on the belt. It needs to be real tight. Any oil or glazing can cause it to slip.
George

06-21-2021, 04:33 PM	#7
Wrenchbender Ret Registered User Join Date: Oct 2005 Location: Overland Park, Ks. Posts: 5,190	Re: 1972 Chevy C10 350 Charging issue, everything new It sounds like the belt is slipping. That 100 amp alt. pulls a heavy load. If you have a strong fan blade or a locked up fan clutch you are putting a heavy load on the belt. It needs to be real tight. Any oil or glazing can cause it to slip. George