went online some said 41-1/2" some said 43" ?? stock gen and water pump..sc

The 1937-1952 fan belt, GM part #3680776 is 5/8" wide and 41 1/2 long at the pitch line.
Dayco #23425, Gates # TR 20426

Thanks much.sc

So Gene, are the belts you posted still available???The only one I can find have teeth

The last belt I got was from NAPA and was smooth.

I will try that

What do you not like about a belt with notches? Are you having your car judged?

The notches / teeth in a belt just look wrong - too modern. Like seeing a universal upper radiator hose with the accordion look, just jumps out as you as wrong.

Back roads...judged..yes..I have 2 with the teeth I need a back one that looks correct

I buy my fan belts at my local hardware store. They are fractional horsepower belts that have proven to last many years. Can't remember the last one that failed. Much less expensive than belts sold at auto part stores. They are smooth as well.

Thanks Chipper I will try that out