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What Transmission Do I Have ?

2578 Views 1 Reply 2 Participants Last post by  rex1965
The original transmission that came with my 1969 428cj Mach 1 was a C6. The current transmission has the following:
Case: RFC8AP7006D
Tail Shaft: RF-C6AP-7A040-A-LR (or ER)
Servo: C6AP7D027D "H"

Is this a C6 'wanna be', a collection of Ford parts of mixed years/cars that luckily connect to the CJ or what ?
Thanks for any de-coding help
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It is normal for different parts to have different (year) engineering numbers in a transmission, hence the c6 and c8 numbers, which is 66 and 68 respectfully. The C6 transmission has the bell housing and main body all one unit, not two pieces like the c4. Being a 428 it should have a c6 type in it. So if you look at the trans and the bellhousing and main body are one unit, you have a c6. There should have been a tag on either a servo cover or the transmission pan with the info on the trans. You also can tell the transmissions by the shape and number of bolt holes in the transmission pan.

Check out this site:

My 2 cts. Good Luck.
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