tranny codes and such

[Briano1234]

here is a great site for transmission codes and the gearing

http://www.zelek.com/diagram%20&%20Char ... amlist.htm

Now for a little braggin... My Automagic tranny in my cab decided to piss AFT fluid all over the place last March...
So I ordered a new Torque Pervertor and a TC seal. I replaced it and still I had a leak...

I found another TNA tranny in the yards and brought it home... Well 4 days later it lost 2nd gear.

So I have been driving it wil a 2 speed tranny.

Well I found the only Automatic in the P-A-P was a TJ so I went to investigate and found the above site.

TJ 90mm axles
1st 2.71
2nd 1.5
3rd 1.0
R+P 3.12

TNA 100mm axles
1st 2.71
2nd 1.5
3rd 1.0
R+P 3.41

So I had to buy new axles.

Well I had it out on the road for a test.... at 60 mph I was at 2700 rpm at 80 I was at 3500 rpm....

So the difference between the TNA and TJ transmission is 500 rpm in 3rd @80mph with the top down. It is like a over drive......

So if you are looking for a replacement tranny for your automatic and want better mileage... try to find a TJ transmission it aint as peppy off the start, but the dollars in gas saved should more than offset that in miles per smiles.