help with L79 pulley GM#'s

[mcditalia]

Can anyone tell me if these GM pulley numbers are correct for a 66 L79 with no AC or PS?

Water pump pulley: Gm part# 3770245
Crankshaft pulley: GM part#3858533
Alternator pulley: GM part#3829387

Thanks,

 

[WayneC]

In looking at a parts manual, I came up with these (we didn't agree on the alternator pulley):

water pump 3770245
crankshaft 3858533
alternator 3871242

 

[mcditalia]

Thanks Wayne,

Can you tell me what the alternator pulley application that I have listed is used for?

I also forgot to ask what the correct finish should be for all three pulleys for the vette. The L79 was also used in Nova's and the pulley #'s that I mentioned were also listed for 302 Z28's and Novas, so I wonder if they came in different finishes for the different cars.

 

[WayneC]

#3829387 would be used for your car if it had power steering.

I'm not positive of correct finish, I would assume semi-gloss black. I doubt the same part number would be painted differently for other applications. Interestingly, the parts manual says 3858533 is stamped "3766987", so maybe this one has different paint for different apps (3770245 has "3770245" stamped on it).