zak0331

Just saying hi I am located in Indiana own a '72 Supreme, in the process of getting it back into daily driver ability. Ill post pictures one day but for now my speedo went out checked the wiring and gear all is in working condition so does anyone have a 72 speedometer up for sale, I got the floor shifter not column really appreciate any input.

oldcutlass

Welcome to the site. Yes we do like pictures.


On your speedo, did you check the cable from the transmission?

zak0331

The connections are good on the cable a bit more info I guess is that neither the needle on speedometer or the odometer mileage move at all as in i can go put 1000 miles on it right now and it still will not show a difference. Is the unit bad or is there some other underlying problem.

RetroRanger

The cable can snap internally, the outside sheath will show no damage. You can disconnect the cable from the trans and from the speedo and see if the inside paice has snapped.

zak0331

Ok will do that Ill post more once i get to it thank you for the inputs.

oldcutlass

You can disconnect it from the trans and hook a drill to it. Then watch your speedometer to see if it moves.

Octania

Cable failure is more likely. Remove the lower end and spin it while someone watches for speedo activity in the dash. Of course, if you can pull the center core right out the bottom, and it's frayed and broken, there's your problem. Plastic gear in the trans can be worn also

zak0331

Thanks to all for help once I know more I will post it up.

zak0331

Speedo works, after hooking a drill up to the cable it worked so now to the plastic gear in the transmission, which either way it was going to get changed due to going to 3.73 rear end gears