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73-87 Chevy _ GMC Trucks => Interior & Equipment => Topic started by: 327power on February 25, 2010, 08:53:52 pm

Title: 75' gauges in an 81'.
Post by: 327power on February 25, 2010, 08:53:52 pm

Ok...I have an 81' C10 that has a very noisy speedometer. I got a instrument cluster from a 75' C20, but it has a mechanical oil gauge. Can I still use any of it? Thanks.

Title: Re: 75' gauges in an 81'.
Post by: slammed79 on February 25, 2010, 09:44:46 pm

You can swap the speedos without any issue based far as I know. I'm sure if I'm wrong someone will chime in.

Title: Re: 75' gauges in an 81'.
Post by: 78 Chevyrado on February 26, 2010, 09:06:13 am

Dont use the AMP guage from the older truck or there'll be smoke and flames.

Title: Re: 75' gauges in an 81'.
Post by: Captkaos on February 26, 2010, 09:56:06 am

The actual speedo gauge is making noise or the cable going to it?

Title: Re: 75' gauges in an 81'.
Post by: 1980c10 on February 26, 2010, 06:07:18 pm

My bet also would be the cable if you haven't ruled it out. If it is just take it out and lube it.

Title: Re: 75' gauges in an 81'.
Post by: 327power on February 28, 2010, 10:49:50 pm

Yeah, it seems to be coming from the speedometer. While driving, if I put my finger on the speedometer I can actually feel the vibration. Super annoying.

Title: Re: 75' gauges in an 81'.
Post by: slammed79 on March 01, 2010, 08:10:06 am

Still could be the cable, try lubing it first, they like it periodically

Title: Re: 75' gauges in an 81'.
Post by: 1980c10 on March 01, 2010, 05:57:21 pm

Mine was the same, lubed the cable, now nice and quiet.

Title: Re: 75' gauges in an 81'.
Post by: Captkaos on March 01, 2010, 06:13:26 pm

Its' the cable.  There is nothing in the gauge that will make that much racket.

Title: Re: 75' gauges in an 81'.
Post by: 327power on March 01, 2010, 08:08:46 pm

It appears to be a 2 piece speedo cable...should I replace the whole thing? It also leaks from the cable connection at the transmission. Just so you know. Thanks!

Title: Re: 75' gauges in an 81'.
Post by: Captkaos on March 01, 2010, 11:16:48 pm

Pull it out and look at it.  If it is dry you need to lube it.  If it is frayed, you need to replace it.

Title: Re: 75' gauges in an 81'.
Post by: 327power on March 13, 2010, 10:48:32 am

Well, I pulled out the cable a couple days ago and apparently it was loose at the speedometer. I bought a crappy "replacement" cable from a chainstore and it doesn't work 'cause it has a threaded connection that is supposed to fit the gauge. Of course it is a slip on so it won't work.
I going to just put on the old one and see if it stays on the speedometer tight enough that it won't loosen up. I think that is why it was noisy in the first place. Thanks!
 

Title: Re: 75' gauges in an 81'.
Post by: Captkaos on March 15, 2010, 04:43:07 pm

I think you can still get the actual inner cable from NAPA.