Speedometer correction

[slowmobile]

TH350.

Original gear ratio was a 3.23 now it's 3.90. I used to have a conversion box on an old pickup of mine that threaded onto the drive gear housing and the speedo cable then threaded onto it.

Thanks.

[tubbytube]

I can help you with this.....but I need to know if the drive housing in the
trans is the older large unit ( roughly the size of a silver dollar ) or if it is
the newer small ( about the size of a quarter ) size.
Look at the trans where the speed-o screws on ......Large housing, or small ?
Then give me the height of the rear tire in inches. (24,25,26.5,27.25,28,29......)
You will need to replace both the drive, and driven gear, to get this correct.

[slowmobile]

pm sent.

Thanks.

[tubbytube]

PM......back at cha !