The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post

**Alloyvert** · 08-18-2023, 03:06 PM

I know it may be a long shot, but trying fix a speedo issue with the SM420 in my '64 C10. Mine had some previous damage with part of the pin adapter to the gear reducer snapped off inside the body and it appears to be unserviceable. The gear has 18 teeth.

Also open to any suggestions on where I might this part.

08-18-2023, 03:06 PM	#1
Alloyvert Active Member Join Date: Nov 2019 Location: SE WI Posts: 116	WTB: SM420 Speedo Gear assembly I know it may be a long shot, but trying fix a speedo issue with the SM420 in my '64 C10. Mine had some previous damage with part of the pin adapter to the gear reducer snapped off inside the body and it appears to be unserviceable. The gear has 18 teeth. Also open to any suggestions on where I might this part. Attached Images