Rear Ratio different years

oldmopar · Post by **oldmopar** » Sat Sep 20, 2008 1:26 pm

I am thinking about getting a m37 from some of what I read it looks like the early ones had the 5.xx rear and newer I think after 53 or 54 had a 4.88 rear is this correct.
I had a 4.88 in a few trucks and that is about as low as I would like to go. I know I can swap gears but I would rather not do it that way
Ed

MSeriesRebuild · Post by **MSeriesRebuild** » Sat Sep 20, 2008 1:53 pm

oldmopar wrote:I am thinking about getting a m37 from some of what I read it looks like the early ones had the 5.xx rear and newer I think after 53 or 54 had a 4.88 rear is this correct.
I had a 4.88 in a few trucks and that is about as low as I would like to go. I know I can swap gears but I would rather not do it that way
Ed

The 5.83 gearing was in all M37's & B1's as original equipment from the begining to the end of the production run. 4.89 gearing is available today, but was never used originally.

peter e mark · Post by **peter e mark** » Sun Sep 21, 2008 11:11 am

Hello oldmopar, And I have a 19 and 52 M37 with 4:89 gears, and I love it . I zip around town on the pavement but still have pulling power in the field with my Bull gear , and , of course, the low range option...Welcome field travellor

amanco · Post by **amanco** » Mon Sep 22, 2008 4:01 am

I think the 4.89's were optional in the civi Powerwagons, but like MSeriesRebuild said I believe all M's came stock with 5.83's but that is not saying you couldn't switch them out.

oldmopar · Post by **oldmopar** » Mon Sep 22, 2008 10:40 am

Thanks for the information
Ed

Post by **Monkey Man** » Mon Sep 22, 2008 12:44 pm

I am looking for a pair of 4.89 ring & Pinion sets, any ideas as to where to have a scratch about??
Take Care

Best Regards - MM

MSeriesRebuild · Post by **MSeriesRebuild** » Mon Sep 22, 2008 1:53 pm

Monkey Man wrote:I am looking for a pair of 4.89 ring & Pinion sets, any ideas as to where to have a scratch about??
Take Care

Best Regards - MM

We can furnish new sets for you, have no idea where a take-out set may be found.

Drew M. · Post by **Drew M.** » Tue Sep 23, 2008 5:00 am

The gear sets are no too common in the States. Just try to find a 2wd 1-ton Dodge of the 1940-50's (Job Rated - Pilot House) with a differential case casting number ending in 241. Many of them used 4.30 instead of the 4.89. 4.30 may be geared too high for our low hp engines. I found a number of 4.30 but no 4.89.

Post by **Monkey Man** » Wed Sep 24, 2008 2:39 am

Thanks Charles & Drew.....
I will keep looking for a takeout set here but down the track I may have to bite the financial bullet and buy new ones, the gear ratio and associated fuel consumption is the prime reason I haven't been driving my truck too much of late.
Take Care

Best Regards - MM

N1VSM · Post by **N1VSM** » Wed Sep 24, 2008 8:43 am

Try Bob Stahl at Veteran Vehicles. I know he has them (new).
www.dodgepowerwagon.com/stahl/

Rear Ratio different years

Rear Ratio different years

Re: Rear Ratio different years

Gear sets . . .

Gear Sets