Has anyone heard of a T-18-1b? The add that I seen says it has a granny low, but is this right?
I tried search, but nothing came up, but there was over 5 pages just for t-18.

Jeep used a model T-18a in 77-79 CJ5s, it had a 6:34 to 1 granny low 1st gear. They also used a model T-18 from 72 - 76 that had a 4:02 to 1 1st gear. There's also a popular t-18 used in Fords that is commonly swapped into jeeps. It's 1st was even lower than the t-18a I believe. As far as I know there is no such thing as a T-18-1b. :beer:

From Jefe's Website (http://homepage.mac.com/jefe/gear.html)

T18B (H) 4.32/2.26/1.51/1.00/5.08R Ford '65-85

Don't know if this is what the Ad was selling or not. There is also:

T18C (H) 4.02/2.41/1.41/1.00/4.73 R Jeep '65-85, IHC '69-73-T44/T45

This is the one that was in CJs from '72-'75

There are no versions of the T-18 that are lower than the T-18a. The T-98 (which is basically an early version of the T-18) has a slightly lower first gear at 6.40 but that's it.

I have a t18 b out of a j10 and it has 6.32:1
later bob

Thanks for the info. I will try to call on it later to see if it still for sale.

If its not there I think our club still has one for sale t-18 w/6:1 low