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I believe all that number tells you is that it is a c-6 case used throughout the 70's. there should be another small tag that will give you more info.

http://www.7173mustangs.com/gallery/1_01_07_15_8_53_18.png

 

"I love my Hookers!" and "Get some Strange" probably have a different connotation to non automotive enthusiasts!

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Look on the top of the trans, if you can. There should be a partial VIN. if it matches your VIN it is original. Chuck

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Thats Funny that you would answer me the car came from Tennessee


Look on the top of the trans, if you can. There should be a partial VIN. if it matches your VIN it is original. Chuck

 

I will look tonight and see if i can see it

Thank you

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It was mine. It was stolen. Please return it. :D

 

My initial response was to tell you what the number meant, I did not question your knowledge of the transmission type.

http://www.7173mustangs.com/gallery/1_01_07_15_8_53_18.png

 

"I love my Hookers!" and "Get some Strange" probably have a different connotation to non automotive enthusiasts!

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there should be a tag on the bottom of the servo cover, usually that is the first tag that goes missing.

 

next on the top of the C6 below the bell housing is a flat area that should have a partial vin stamp.

 

if it is from a mustang 71-73 then the first should be a 1,2 or 3, followed by an F the next digits will be the unit number

 

if the trans came from another ford then the first digit and letter will be different.

 

An H code had an FMX trans. Q or R or M would of had a C-6

 

if you are trying to see if the trans is original to a 71, then you want to see the 1F followed by the cars partial vin on the top stamped area.

 

from there you can work back the original tag on the servo cover.

would start with PGA or PGB

 

AH, AU would of been a 4 barrel

 

you want to correlate it with the 4th Vin Letter as well for the engine.

 

you can also look at the letter on the servo Cover above where the tag is suppose to be.

 

From Softest to Most firm

 

CODE ON COVER, APPLY DIA, RELEASE DIA, SEAL TYPE

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 closer you get to R the higher the performance of the Transmission.

back then you would of seen a S or J on the cover the big block Cobra jets got R servos

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D7UP 7006 AA

 

no tag on it its in a 1971 mach 1 i know its a c6 just trying to see if its the orginal one.

 

The D7UP number tells me "nope" (1977-up van fitment).

Pete - MotoArts Decals and Signs

'71 Sportsroof 351C-4V/4-speed - FINALLY under construction - no, wait, on hold again...

'90 Mustang 7-Up 5.0 ragtop, rolling beater - SOLD

'66 Sunbeam Tiger Mk.IA, survivor

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motorarts is correct

 

D7 is 1977 the U is Van

the engine was most likely a 351W same bolt pattern as the 351C small block.

 

Truth is that trans is better then 71 original.

 

you would have to crack it open to look at the internals but i would bet the Direct and forward clutch packs are 4 fiber.

and the reverse clutch might be 5-7 clutches.

 

the original 71 c-6 would of been 3 forward, 3 direct and 4 reverse clutches making it much weaker then the 1977 version for a van that was beefed up internally.

 

confirm with the VIN on the top of the C-6 use a wire brush to get the crust off.

 

sometimes C-6s from trucks or vans have 4 gear planetary gear sets these are much stronger then 3 gear versions for cars.

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