transmission and transfer case

[conk357]

I have a 1979 jeep j20.Does anyone know what transmission and transfer case i have? It is a standard transmission with a granny gear.Any help would be greatly appreciated.

[Galactic_Battle_Cruiser]

I believe you have a T-18A my friend.

[Galactic_Battle_Cruiser]

.....your T case is a Dana/Spicer model 20 with a 2.03:1 low range I believe.....I'm not sure if the Quadra-trac came on manual transmissions...anyone else know? Is there a vacuum switch to control your "emergency drive" in your glove box? If so it's a Q trac.
The T 18-A has
1st 6.32:1
2nd 3.09:1
3rd 1.69:1
4th 1.00:1
Rev. 7.44:1

GBC

[conk357]

thanks for the info.

[Cecil14]

Q-trac was only on autos. You've got a T-18A/Dana 20. Great combo.

Anthony