Cannot find a new TOW vehicle with 373 gears
we decided that we do need a new tow vehicle it's just not comfortable with the one we have And towing our new unit...I have been unable to locate anywhere a used DRW 3500 Ram with 373 gears and aisi...
Forum Discussion
One of the benefits of wider ratio transmissions and many gears is they negate the requirement for multiple rear axle ratios.
1st gear example Old 4spd
Dodge 48RE 2.45 x 3.73 = 9.13 ; 2.45 x 4.10 = 10.045 ; 2.45 x 4.56 = 11.72
Ford 4R100 2.71 x 3.73 = 10.10 ; 2.71 x 4.10 = 11.11 ; 2.71 x 4.56 = 12.36
GM 4L80E 2.48 so similar to Dodge
New 6spd
Dodge Aisin 3.75 x 3.42 = 12.825 ; 3.75 x 3.73 = 13.99
Ford 6R140 3.97 x 3.42 = 13.58 ; 3.97 x 3.73 = 14.81
So you can see, even with a 3.42, the new 6spds have deeper gears than the old 4spds did even with 4.56!! The other aspect I love about the Ford 6sp is 4th is not 1:1, but 1.15:1 effectively making towing in direct like if you had a lower rear end turning that 3.42 into a 3.93
The 6r75 in my Expy is 4.17:1 1st and has 3.73 (standard on the EL) for a 1st gear crawl ratio of 15.55. It shifts out of 1st at 15mph. I love it! No worry about stalling going up a steep hill!
1st gear example Old 4spd
Dodge 48RE 2.45 x 3.73 = 9.13 ; 2.45 x 4.10 = 10.045 ; 2.45 x 4.56 = 11.72
Ford 4R100 2.71 x 3.73 = 10.10 ; 2.71 x 4.10 = 11.11 ; 2.71 x 4.56 = 12.36
GM 4L80E 2.48 so similar to Dodge
New 6spd
Dodge Aisin 3.75 x 3.42 = 12.825 ; 3.75 x 3.73 = 13.99
Ford 6R140 3.97 x 3.42 = 13.58 ; 3.97 x 3.73 = 14.81
So you can see, even with a 3.42, the new 6spds have deeper gears than the old 4spds did even with 4.56!! The other aspect I love about the Ford 6sp is 4th is not 1:1, but 1.15:1 effectively making towing in direct like if you had a lower rear end turning that 3.42 into a 3.93
The 6r75 in my Expy is 4.17:1 1st and has 3.73 (standard on the EL) for a 1st gear crawl ratio of 15.55. It shifts out of 1st at 15mph. I love it! No worry about stalling going up a steep hill!
