1967 GT390 Mustang - Alternator Question
 

Been doing a lot of research and have one question regarding the alternator pulley.

A GT390 4 spd Mustang with no A/C and no smog will have a single groove or a double groove alternator pulley?

I am not 100% sure this pic is correct?

Paul

My Mustang 64-1/2-70 Restoration Guide (p. 335-Corcoran and Davis,1992) displays a pulley application chart that lists the correct pulley for a non-smog '67 390 to be p/n C5AZ-10344-K. The actual numbers stamped on that will be C5AF-10A352 (B, F, G, K, or L). There's also a C8AE number that gets stamped on later service replacement units. Here's an eBay auction of what looks to be an authentic original piece. https://www.ebay.com/itm/NOS-1965-19...-/333583794998

Thank you very much.

Paul

Looks like NOS Ford parts are a lot cheaper than similar bowtie:-)

That pulley was used in a lot of applications for several years. It's not a scarce or high dollar piece , though I was still a little surprised how many were on the market and how inexpensive they were. I know Chevy guys have had to pay through the nose for a long time (especially if your parts cross over into the Corvette realm), but you can try and restore an incomplete Boss 429 or a 427 anything and realize a lot of people have it tough.