Alternator pully size
Looks like the alternator on my 1966 427-425 Corvette has finally died. Replacement alternators come with a smaller pully than on the original. If I recall the high performance (reeving) engines had a larger pully. Does one just buy what is available and then swap the pullies out. Does it turn into PIA job or is it relatively simple?
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Re: Alternator pully size
Ted - if the existing alternator on your 66 L72 is the original #1100696, you could have it rebuilt but if you do go with a remanufactured alternator, it's an easy thing to get the existing pulley off your current alternator and swap it onto the remain alternator.
I did that recently on my 66 L72, the alternator on there had been rebuilt by John Pirkle many moons ago and it just died.
In the interest of time, I 'borrowed' one from my project 65 L78 and swapped on the pulley from the L72 alternator.
I typically use an air driven impact wrench to remove the large nut up front. If you don't have access to an impact wrench, a hex wrench to hold the shaft and a large crescent wrench will do.
I'm going to send you a PM regarding your L72.
DSCN5995.jpgMike T. - Prescott AZ. -
Re: Alternator pully size
Thanks good information. I'll check out the forum.Comment
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Re: Alternator pully size
Do you guys have part #s for the pulley and the fan? I have correct alternator for my 66 L72 but having trouble confirming right pulley and fan. ThanksComment
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Re: Alternator pully size
Paul,
GM Part Number:3829193 with power steering
GM Part Number:3829387 without power steering
For '64 - '67 all alternators that did NOT have an integral pulley used the same alternator fan. I don't have a part number as the alternator came to the factory as a complete assembly. Picture below of what you want for a pulley.
Leif
'67 Coupe L79, M21, C60, N14, N40, J50, A31, U69, A01, QB1
Top Flight 2017 Lone Star RegionalComment
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Re: Alternator pully size
Thanks Leif... that's a big help.
Paul OComment
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