You will need to know the rear axle ratio before you buy the C6 trans, because with the 116" wheelbase, there are TWO different lengths, TWO different yokes.

 

Is there an easy way to find that out?

 

AXLE code printed on the Certification Label, glued to the left door face below the latch.

 

the tag on the rear end has 5806a 08 8 8 6e08a

 

No door sticker? From that tag I am going to guess it's a 3.08. See if there is a bolt holding the tag on to the left of the 08. They usually punched a hole right through the 3.

 

 

If you clean it up good near the bolt, you may see the remnants of a 3. Your door sticker should have a H8 or a 18, or a 38 or a 82 for a 3.08 gear.

 

S806A = Ford 8.8" Rear Axle / 3.08-1 / No Limited Slip.

6E08 = Assembled May (E) 8, 1986.

Historical date, the Germans surrendered May 8, 1945 at Ike's HQ in Reims France, ending the war in Europe.

 

So what c6 do I need to buy?

 

Why buy a used trans? It may be no better than what you have, could be worse.

You will be better off fixing what you have, rather then spending time searching for another.

So far, you've spent 5 days discussing this topic, it could have been R & R'd and fixed by now.

 

I work in a parts store I also work another full time job totaling 80 hours a week.. I'm buying a remanufactured transmission because I dont have time or the knowledge on how to rebuild one. So that being said I need to know which of the two transmissions listed above I need to purchase.

 

I think @matthewq4b had offered to calculate for you the number of teeth in your current drive gear if you give him 1) your rear axle ratio, 2) diameter of your tires (in inches), and 3) the number of teeth on the driven gear (the one on the end of the speedometer cable).

See Post #13.

 

The tires are 235/75/16 the gear ratio is 308 and I have no idea how many teeth are on the gear. I have a God speedo to go into the truck so I'm not worried about the speedometer cable gear. I have a gps speedometer

 

Then why are you worried about the number of teeth on the drive gear in the trans ?
As already said both transmissions will functionally be the same.

 

That's my assumption but I'm worried one transmission will be longer than the other. I have to say you guys have been very unhelpful. All I need to know was if the transmissions listed above where infact ther same length. I have access to every thing but a drive shaft shop or aftermarket drive shafts to make this transmission work.im having to sell things to purchase a new trans as I dont have the money or the time to rebuild one or want to take a chance on a shop out here screwing up a rebuild.