

Someone (please! ) with the original Ford parts books, of the period (don't completely trust aftermarket listings) look up the C5AZ-6375-D unit is it correct for the 1965 w/ the C.O.M. So since we (I ) seem to be left with doubt as to the appropriate use of an existing unit, from another application, and a minor variation could lead to catastrophic failure and since the appropriate unit is readily available (even perhaps at hand, and maybe the existing ring gear teeth only appear so-so anyway), they're not expensive ($60.00 +/-, oriental imports $30.00+/-), this leads me to advise.swap it! One (RustyNCA) can establish with a somewhat accurate comparison (measurements) of the unknown unit (not original for the '58) from the vehicle to the known C6 units present for compatibility also. Note that this dimension is not overly critical, so even testimony of what someone else "got-away-with" does not pass muster. And perhaps, even this statement may have simply over looked the 1965 only C.O.M.? Very possible. got the C6 flexplate (to use the newer starter) for one more year? And what other engineering considerations may have been made to make such happen? I don't know?īut, I have been informed by several transmission suppliers and torque convertor producers, over the years, that the C6 has it's own "converter-depth" dimension not shared with other units. flexplate or perhaps the C6 was not ready for production, as intended, so the C.O.M. was produced only in 1965(?), with the new starter arrangements before being replaced by the C6 (in automotive applications). appeared in the late 50's? Also consider that component assemblies which appear this model year where in engineering the year before (or more).īut, you may be correct, in that I believe the C.O.M. But, with the same logic, why a C5# if for the C.O.M., (vs. You could also count the teeth on your flex plate. The difference is 1/2" in flex plate diameters. Now slide the torque converter into the transmission's input spline and see if the starter teeth mesh. Outside the car, mount the starter to the bell housing and mount the flex plate to the torque converter. Squarebirds with a C-O-M used a flex plate with 153 teeth and 15"-diameter. Depending on what size car the C6 came out of it could use either the 157 or 164 tooth flex plate. Now, you want to know if a C-O-M will fit?įlex plates and converters simply bolt together with four studs/nuts.Ĭ6 comes with its own integral bell housing (with starter motor bolt holes in it). You're running a 390 w/late starter motor. I'm already running a 390 with a later style starter, but I don't remember if I changed the flexplate back when I swapped out the motor.I have to look at your question backwards to understand it. IE, can I just leave in the flexplate that I have in there, or do I have to change it out? Does anyone know, can you run the flexplate from the Cruise-a-matic to the C6 converter.
