How can I find out what size clutch plate is on a 1964 Lemans, without taking it apart?
Just checked rockauto.com. Looks like the two V8s are the same. The L6 (inline 6 cylinder) shows a different part number with a 10" clutch. I've bought from rockauto many times. They're usually pretty good. Even with the older stuff. They have excellent customer service as well. HTH. -Jim
Pontiac used the same clutch on all 389-400 engines from 1964 to 1972. Its a 10 3/8" disk, 10 spline shaft. Do yourself a favor and purchase a new pressure plate as well. Ames Performance has a kit #R165P that has everything you need except the pilot bearing. They will also be happy to assist you if you have any questions about the repair. Good luck!
Search Pontiac GTO Questions
Pontiac GTO Experts