gear ratio

My Dodge has 3.92 not 3.55. Makes a TON of difference towing.

Owners manual will have a sample vin in it and tell you which code you are looking for to find your rear end ratio. Other wise, yes a dealer can tell you which codes you are looking for.

kansanforlife wrote:
Thanks for all the info. It is a 3.55. I do have the tow pkg. Is that the proper rearend.

It worked for me. I never pulled in od(4th). If I remember right it was not recommended to tow in overdrive.

The 3.55 wasn't enough when i had my conv. Van with the 5.9L towing a 6300 lb loaded trailer. The 3.90 was the perfect ratio.

kansanforlife wrote:
Thanks for all the info. It is a 3.55. I do have the tow pkg. Is that the proper rearend.

If you have trouble such as gear hunting over mild hills or always seem to be in the wrong gear you probably need 4.10 or 4.56 ratio.

I will be towing a 1992 jayco eagle 265fs.

Thanks for all the info. It is a 3.55. I do have the tow pkg. Is that the proper rearend.

kansanforlife wrote:
How do you find out what your gear ratio is on rearend. Have a 1999 dodge 1500 5.3.

My '99 1500 5.2L had a 3.55 with tow package.

Moved to Tow Vehicles

Moderator-TT's

jfkmk wrote:
Call a dealer and give them you're VIN.

Or Google your vin. I did it for a friend who had a old MH and got more info than I thought was possible.