Ok...pictured below are three C2 SB altenators with three different pulleys. Can you ID from left to right? I know one application for leftmost is 65 300hp no A/C. Your thoughts?
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Re: Alt Pulley ID Challenge....
i'll give it a go
far left no a/c but has power steering
next a/c and power steering
far right looks like pass car -
My Guess (from a '65 perspective)
If you gave the outer pulley diameters it would help. BTW, fans for the 2 on the left have the appropriate 1965-era vane rib markings.
Left -- tend to agree with you IF the pulley is 2_13/16" dia., would be #3741241 (ie. for '65 base and L75 engines, no air). I'm not sure about the thick back offset -- looks a bit much but I don't have a low-horse car to compare.
Middle is easier. It's the 3_5/8" #3871242 for F.I., L79 and L76 w/o C60; and L78 w/P.S. (replaced by #3829193 for the 396, which I think is identical except for shaft tightness)
On the right: looks like a later ('66+ fan) design) ? Pulley is separate and appears around 2_5/8" dia which would make it suitable for low horse Corvette engines w/C60, or a multitude of GM uses, depending on the vehicle.Comment
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Re: My Guess (from a '65 perspective)
Agree with Wayne except I think the alternator on right is 1963 passenger car. I know the fan is 63 because of the unique half moon cut out on each blade. The pulley may be for AC but I think there is supposed to be a baffle between the fan and pulley.Comment
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yup....leftmost has 2 13/16 dia
Middle is approximately 3 5/8 (3.669)
Right is approx 2 5/8 (2.608)Comment
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Re: Alt Pulley ID Challenge....
Phil...I tend to agree with Wayne on left and middle. I know left is from L75 no p/s no a/c. Note certain on middle and right.Comment
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Re: Alt Pulley ID Challenge....
So... would the one on the left be correct of a 1964 Corvette with 327/300 and without PS also?
Thanks,
James WestComment
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Re: Alt Pulley ID Challenge....
3871241 pulley is specified for both 64 and 65. Wayne meant 3871241 not 3741241...Comment
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