• Hi Guest!
    If you appreciate British Car Forum and our 25 years of supporting British car enthusiasts with technical and anicdotal information, collected from our thousands of great members, please support us with a low-cost subscription. You can become a supporting member for less than the dues of most car clubs.
    There are some perks with a member upgrade!
    **Upgrade Now**
    (PS: Subscribers don't see this gawd-aweful banner
Tips
Tips

MGB Proper MGB Overdrive speedometer

Share this page

B

bluemg

Senior Member
Offline
I recently changed to a overdrive transmission from a 72 MGB.
The 1040 speedometer that was dead on accurate is now 12 mph off. Which speedometer do I need to find to work with the overdrive? is it a 1450 ???
Thanks
 
Here's a chart that should help:
 

Attachments

  • 29829.jpg
    29829.jpg
    73.5 KB · Views: 251
My speedo is a 1280 -- this is on a Nov 1970 built car with factory black label overdrive. Of course the speedometer doesn't work, so can't vouch for its accuracy...
grin.gif
 
Back
Top