2nd gen speedometer question

[Symon623]

Ok guys and gals too, I have a 85 truck, with a 89 4runner gage cluster, and Dana 300 case, 5.38's and 37 MTR's. I hooked up the speedo to see how far it was off so I could order a new gear to slow it down. In my old rig I had a Stewart Warner speedo with the same t/c, gears and tires and it read 70 when my GPS said I was doin 55. Well now I have this set up in my Toy and when my GPS says 55the Toy speedo says 95. Why? are Toy speedo's geared? :wtf: I can't get a gear big enough to compensate for this error.

Anyone have any ideas? Thanks

I know speedos are overrated, but I kinda want it to work.

 

[Glenn]

Yours is probably geared...Toyota didn't have electronic speedos until the 1990s. Try Tacoma Speedometer & Instrument. They might have what you need.