Hello All,
I may be looking for a silver dot 150 mph speedometer.
I was out on a long drive in my 73 and the speedometer started bouncing (from 0 to 150), then started howling and then screaming. I pulled over and pulled the speedometer out of the bezel and unscrewed the cable from the back of the gauge. No more noise, no more bounce and of course no more working. When I pushed the gauge back into the bezel I noticed the needle was almost off and just dangling/resting on the stop.
Question, fixable or just find another one?

Thanks in advance
Mike

Definitely fixable. Try either North Hollywood Speedometer, Palo Alto Speedometer or Seattle Speedometer.

Check your cable, should turn freely by hand. after disconnecting it from transmission drive. Fix it first.

I had the same problem with my 73. I drove with the howling all the way home. It’s on its way back from Palo Alto now and I’m replacing my cable today. 300 bucks for the speedometer repair and 45 for the cable.

So if you decide to replace your speedometer cable it’s more than the 15 minute job some of the other posts here describe. My car required the center console be removed so the tie ties that captured the wiring harness and cable could be cut.