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73 speedo/tach removal

Don Mason

Well-known member
Joined
May 10, 2005
Messages
59
Location
Georgia
Corvette
01 Convertible & 73 Coupe
Hey Guys, I am in the middle of a project that started with the repair of my factory radio and clock. These items have been repaired and are on the way back to me. The center gauge cluster, right dash pad, top dash pad and center console are all out of the car. While I am in there I am thinking of removing the left dash pad containing the speedo and tach to service the cables that drive these units and replace the bulbs in the instruments. I know that I will have to drop the steering column. Any advice on this project? Anything special to look out for? Any tips on removal or replacement? As always, thanks for your input.
 

Bill75

Well-known member
Joined
Jan 1, 2004
Messages
698
Location
Somers CT
Corvette
75 Coupe ZZ4, Brodix IK-180's, Headers,TK0-500
I've done my 75 a couple of times, sounds like you have most everything ready. The speedo cable sometimes won't allow the unit to pull forward too much, getting a hand in there to disconnect that will help. There's a spring clip holding it in place, press on it while pulling the dash or having someone pull on the cable from under the hood will disengage it.

The wire harness is very tight near the door and is held in place with some metal straps which can be bent out of the way, I think there's also one on top of the tach/speedo, you should see it when yo get it pulled back a little.

A/C duct work is a little challenging if you have it. Only advice there is have a couple of cold beers ready after you finish!
 

MikeMc71

Well-known member
Joined
Apr 30, 2007
Messages
100
Location
Tucson, Arizona
Corvette
1970 Roadster, 1971 LT-1, 1971 Coupe
When I did mine, I also took out the drivers seat, so I had plenty of room to move around, lay down, etc. At least you don't have to mess with a cable tach and all the crap for the wiper door......now THATs:v a real hoot!
 

6880 Mike

Well-known member
Joined
Jun 30, 2006
Messages
2,723
Location
The Bluegrass State
Corvette
1968 convertible; 1980 L-82
Take a good, close look at everything before you take it out. It all has to go back in the same way, including the routing of the dash harness around the speedo and tach.

:)
 

Red73BB

Well-known member
Joined
Jun 15, 2001
Messages
241
Location
Defiance, MO
Corvette
1969 dark red convert
I was about to say the same on taking a close look, use a digital camera and take many pix!
 

Evolution1980

Well-known member
Administrator
Joined
Feb 25, 2002
Messages
4,302
Location
Cleveland, Ohio
Corvette
ZZ4, 700R4, Steeroids rack & pinion, VB&P Brakes
When I did mine, I also took out the drivers seat, so I had plenty of room to move around, lay down, etc.
Yes, if you didn't take your seats out, DO IT! It makes moving around in there waaaay easier! It's only 4 bolts per seat. I've done mine so often that I can have them out in about 10 minutes or less.

Get yourself an extension or set of extensions on a ratchet. About 16" or so should do ya. :) I can't recall the socket size now. ½" maybe?
 

Don Mason

Well-known member
Joined
May 10, 2005
Messages
59
Location
Georgia
Corvette
01 Convertible & 73 Coupe
Thanks for the tips guys. Especially about the seats, I had wondered about them. I'll let you know how things go.
 

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