Jump to content

Speedo Drive Ratio


RSD501

Recommended Posts

I have a RW613 with 4.42 rears and a t2090 trans. Truck came with 24.5 rubber and we switched over to 11r22.5 . The speedo drive is worn out and not working, and I want to get the right ratio so the speedometer runs true. The "adapter" as the parts breakdown calls it, has a ratio of 1.132 from the factory. Can anybody help me with the correct ratio? Or if anybody has a serial number for a truck with the same specs but factory 11r22.5 tires that would work too. Thanks for any help

Link to comment
Share on other sites

The dealer was helpful to a point, but they can't find the old bulletin that had a chart to help determine the required ratio. They suggested a similar truck but speced with 11r22.5, and using that vin. I was at the parts counter for awhile, and there was some mumbleing about the age of the truck....

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...