Speedometer noise - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ChopperDr · 02-10-2008, 01:11 AM

My first post here, tons of great info, but I cant find what I'm looking for. I just brought home a 66. It has had a 350/350 swapped into it. The speedometer cable was too short so I put in a longer one. The speedo is really noisey now that it is hooked back up. I pulled the instrument housing out this morning, no easy task cause it has a late model column in it that wouldnt give me clearance untill I dropped it down. The seedometer is making a grinding/scraping noise when it is turned by hand.

Has anyone had success lubing the speedometer assembly itself? There is a big swapmeet saturday where I might find a replacement if needed. I'd rather spend money on a few patch pannels that I need.

Chopper

*LILRED66* · 02-10-2008, 01:51 AM

I had the same problem, so I soaked my stock speedo cable with WD-40. It has the spiral wrap, so the oil could penetrate. I also squirted some dielectric grease into the back of the speedo, where the cable attaches. To test, I attached the cable to the speedo and attached a drill to the end of the cable where it attaches to the tranny. I ran the drill in forward and reverse to ensure the oil/grease was fully covering all the moving parts. If this does not eliminate the noise, you may need a new speedo head. You can post in the Parts Wanted forum for a new speedo. Good luck troubleshooting...I hope this does the trick.

kdrodworks316 · 02-10-2008, 02:27 AM

lilreds right, i would try to lube it and test with a drill.

ChopperDr · 02-10-2008, 09:28 AM

I pulled the cluster from the dash and tore it down. I cleaned up the speedometer head and lightly lubed it. While it was apart I reset the miles to zero. Test drive went fine, can't hear the speedometer any more. Thanks for the replies.

Chopper

kdrodworks316 · 02-10-2008, 10:12 AM

no problem chopper, welcome to the board

*LILRED66* · 02-10-2008, 10:14 AM

ChopperDr:

Job well done...congratulations. Isn't it nice to look down at the speedo and see 000001?

02-10-2008, 01:11 AM	#1
ChopperDr Registered User Join Date: Feb 2008 Location: WA Posts: 189	Speedometer noise My first post here, tons of great info, but I cant find what I'm looking for. I just brought home a 66. It has had a 350/350 swapped into it. The speedometer cable was too short so I put in a longer one. The speedo is really noisey now that it is hooked back up. I pulled the instrument housing out this morning, no easy task cause it has a late model column in it that wouldnt give me clearance untill I dropped it down. The seedometer is making a grinding/scraping noise when it is turned by hand. Has anyone had success lubing the speedometer assembly itself? There is a big swapmeet saturday where I might find a replacement if needed. I'd rather spend money on a few patch pannels that I need. Chopper

02-10-2008, 01:51 AM	#2
LILRED66 Account Suspended Join Date: May 2005 Location: Kansas City, KS Posts: 3,906	Re: Speedometer noise I had the same problem, so I soaked my stock speedo cable with WD-40. It has the spiral wrap, so the oil could penetrate. I also squirted some dielectric grease into the back of the speedo, where the cable attaches. To test, I attached the cable to the speedo and attached a drill to the end of the cable where it attaches to the tranny. I ran the drill in forward and reverse to ensure the oil/grease was fully covering all the moving parts. If this does not eliminate the noise, you may need a new speedo head. You can post in the Parts Wanted forum for a new speedo. Good luck troubleshooting...I hope this does the trick.

02-10-2008, 02:27 AM	#3
kdrodworks316 KOFFIN DRAGGER Join Date: Jan 2008 Location: st.anthony Idaho Posts: 864	Re: Speedometer noise lilreds right, i would try to lube it and test with a drill.

02-10-2008, 09:28 AM	#4
ChopperDr Registered User Join Date: Feb 2008 Location: WA Posts: 189	Re: Speedometer noise I pulled the cluster from the dash and tore it down. I cleaned up the speedometer head and lightly lubed it. While it was apart I reset the miles to zero. Test drive went fine, can't hear the speedometer any more. Thanks for the replies. Chopper

02-10-2008, 10:12 AM	#5
kdrodworks316 KOFFIN DRAGGER Join Date: Jan 2008 Location: st.anthony Idaho Posts: 864	Re: Speedometer noise no problem chopper, welcome to the board

02-10-2008, 10:14 AM	#6
LILRED66 Account Suspended Join Date: May 2005 Location: Kansas City, KS Posts: 3,906	Re: Speedometer noise ChopperDr: Job well done...congratulations. Isn't it nice to look down at the speedo and see 000001?



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