Lower first gear trans

Yes, I find 15.06 but that is reverse. I don't find 14.47. But I could be wrong, won't be first time.

Below is part of Eaton's excel file page for 18 speeds.

 

Shows what happens when you just glance instead of look.

 

After really looking it shows the 15618A which cannot be compared to the 7 or 9 series. The 6 series used an overdrive back box in stead of the underdrive rear box like the 7 and 9 series. The 6 series is considerably weaker and ends in .85 if I remember correctly

 

Happened to me as well, but I noticed just before posting.

 

Auxiliary Transmission | eBay

They even sell the mounting brackets

 

Double post

 

I knew you or @superhauler would know what auxiliary box I was thinking

 

The one in my starcar is the under drive aux. Stupid low gearing when in the low side! I can put it in low side and 1st gear in main box and walk around truck 3 times before it mxs 10 ft !!! LOL

 

T318LR & T318LR21 are 16.41 low & .71 top gear. The T318 & T31821 are 13.44 low & .71 top gear. Mack also has a 10 speed transmission with a 17.35 low & .73 top gear with the T310ME21...which has 6 gears in the low range and 4 in the high range, with the entire low range available in both forward AND reverse.