Alternator Pulley Question

[Don T.]

Needing help identifying the correct alternator pulley for my 1967 427/400hp coupe. The alternator is #1100693 - 37amp. I was deducted a point for NTP on my pulley and am not sure what is typical. Any help would be appreciated and a photo would be worth a thousand words.
Thanks

[Richard M.]

Re: Alternator Pulley Question

Don, The pulley depends on if you have N40 power steering or not as the mounts use different alt mount brackets. Also may vary if C60 AC, K19 A.I.R. or combinations of them. I recall the AIM should show the various pulleys too, buried in those sections.

Rich

[Stephen L.]

Re: Alternator Pulley Question

Alternator pulley on a 67 427/390.
Ignore the incorrect fan clutch that has been replaced since the photo with a correct one. Alt #1100693 dated 7C14

[Don T.]

[Stephen L.]

Re: Alternator Pulley Question

Did the judge indicate what was NOT typical?

The 67 judging manual says:
Page 149.
"It should be a separate pulley and fan combination.
The pulley is cadmium or zinc plated with a cast look."



Mine has passed multiple judgings, including Regional and a National level.

[Don T.]

[Joe L.]

Re: Alternator Pulley Question

No he didn’t indicate and I wasn’t sure so I didn’t ask. The guide also indicates “do not deduct for pulleys without part numbers”. Little frustrating.

Does your car have N-40 and/or C-60 and/or K-19?

[Richard M.]

Re: Alternator Pulley Question

Does your car have N-40 and/or C-60 and/or K-19?

Don, Joe and I asked the same questions. A few photos of your pulley would help us decipher was is atypical.

Rich

[James G.]

Re: Alternator Pulley Question

Steven your pulley in the photo appears like it has the yellow or gold dichromate is that just in the photo or am I correct?

Don is yours gold or silver zinc plated?
If the judging guide says cad or zinc, would a judge deduct for gold dichromate?

As an aside - I went through a few photos of original 67 big blocks I have and every pulley was silver zinc, ADMITTEDLY none were 400hp cars, however the pulleys appeared very similar if not the same.

[Stephen L.]

Re: Alternator Pulley Question

These are photos from a survivor 67. It has power steering which makes the alternator pulley have a "thick" area to make the belt align with the steering pump........

[Leif A.]

Re: Alternator Pulley Question

Don, Joe and I asked the same questions. A few photos of your pulley would help us decipher was is atypical.

Rich

OP stated his alternator was a 37 amp...C60 equipped cars had a amp alternator.

[Richard M.]

Re: Alternator Pulley Question

OP stated his alternator was a 37 amp...C60 equipped cars had a amp alternator.

Leif, Yes C60 used a higher amp alternator, 61 amp iirc. But we need to know if N40 or not, and some photos.

Rich

[Gary B.]

Re: Alternator Pulley Question

Don,

The confusion about not knowing what is wrong with your pulley is why judges are told not to write just “NTP”. They should note exactly what is wrong, like finish should be zinc, not dichromate, or pulley should have a 1/4” hub, or something to tell you why it’s NTP.

Gary

[Don T.]

Re: Alternator Pulley Question

Here is the alternator and pulley that was judged and the judging sheet. My car is 427/400hp has A.I.R, no a/c, no p/s, no TI.

[Gary B.]