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How do you id a c6

Started by shlb69, April 04, 2020, 12:18:16 PM

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shlb69

I have a c6 with a e on the servo. How dod I id which trans is actually is?

68blk500c

Unless the id tag is still attached, it will be guessing.

Ford's MPC does list tag information by application; some information regarding servo id, as well.

Main cases have different casting characteristics, as do tail shafts, depending on application.  Not identical across the board. 

Royce Peterson

There will be a VIN stamped on top of the transmission at the rear just forward of where the tailshaft housing attaches. You can get a Marti Report using the VIN if you want to but normally you can also tell which plant the car or truck was built at. If the E servo is original you know it is a low performance unit but the other parts may still have value.


Quote from: shlb69 on April 04, 2020, 12:18:16 PM
I have a c6 with a e on the servo. How dod I id which trans is actually is?
1968 Cougar XR-7 GT-E 427 Side Oiler C6 3.50 Detroit Locker
1968 1/2 Cougar XR-7 428CJ Ram Air C6 3.91 Traction Lock

shlb69

Where would tag be as I didn't see one

KR500

Quote from: shlb69 on April 04, 2020, 06:06:06 PM
Where would tag be as I didn't see one
The tag would be attached to one of the servo cover bolts
Rodney Harrold,Ohio SAAC Rep,SAAC 68 Shelby Concourse Judge,68 GT500KR 02267

shlb69

Can't see a tag just a e on the servo

Royce Peterson

What's the VIN stamped on top of the case? It's not on a tag.

Quote from: shlb69 on April 04, 2020, 07:42:37 PM
Can't see a tag just a e on the servo
1968 Cougar XR-7 GT-E 427 Side Oiler C6 3.50 Detroit Locker
1968 1/2 Cougar XR-7 428CJ Ram Air C6 3.91 Traction Lock

propayne

Here is a photo of a C6 with its tag.

This is from a 1968 Cougar with a S code 390 4v.

- Phillip

President, Delmarva Cougar Club - Brand Manager, Cougar Club of America

rbarkley

Here is what I have in my 67 GT 500 Automatic.


rbarkley


shlb69


Royce Peterson

What's the VIN number stamped on top of the transmission case just forward of the tail shaft? That will tell you precisely which car it came from.


Quote from: shlb69 on April 13, 2020, 08:57:24 PM
Here is a photo
1968 Cougar XR-7 GT-E 427 Side Oiler C6 3.50 Detroit Locker
1968 1/2 Cougar XR-7 428CJ Ram Air C6 3.91 Traction Lock

shlb69

My other c 6 has a d. What is the difference between a d or e and what would have been the application

Royce Peterson

The biggest servo is the R servo. All the other letters are smaller. All 428CJ / SCJ applications used the R servo. The 1967 - 68 Shelby GT500 used the H servo.

I do not have any information on an E servo. I would need to look at the case to see the part number on the case to possibly determine what it might be for. It's not a performance application.

Here they are from weakest to strongest:

N 1.93 2.92 Molded piston
S 2.00 2.86 Molded piston
G 2.04 3.02 O-rings
J 2.07 2.69 O-rings
L 2.07 2.98 Molded piston
D 2.08 2.98 O-rings
P 2.10 2.86 Molded Piston
H 2.34 3.02 O-rings
R 2.48 3.50 O-rings

The first year for the C6 was 1966. All 1968 and newer C6 transmissions have a VIN stamped on top of the case which makes identification super easy. You need to tell us the casting number if there is not a VIN.


Quote from: shlb69 on April 14, 2020, 09:40:28 PM
My other c 6 has a d. What is the difference between a d or e and what would have been the application
1968 Cougar XR-7 GT-E 427 Side Oiler C6 3.50 Detroit Locker
1968 1/2 Cougar XR-7 428CJ Ram Air C6 3.91 Traction Lock