Tach Question

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Dec 20, 2007 | 03:45 PM

taylorsk8

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Racer

Joined: Aug 2006

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From: Saskatoon Saskatchewan

Tach Question

Was 74 or 75 the first electric tach (as opposed to mechanical)? Would this fit in a 73 with no mods?

Thanks

T

Dec 20, 2007 | 04:17 PM

66roadster427

Instructor

Joined: Sep 2007

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From: Dallas Texas

I believe 75 was the first year for electric. If you change just the tach though, i dont think the style of the numbers on the dial will match the speedo numbers. I just changed out all the gauges in a 76 i am working on for an earlier set, and to keep the tach electric i used the casing on the old gauge (so the numbers on both gauges would still match) and used the guts out of an old AutoMeter Tach - works well and you'd never know!

Dec 20, 2007 | 04:48 PM

taylorsk8

Thread Starter

Racer

Joined: Aug 2006

Posts: 290

Likes: 0

From: Saskatoon Saskatchewan

Thanks

T

Dec 20, 2007 | 11:21 PM

0Willcox Corvette

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From: Jeffersonville Indiana 812-288-7103

St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15

75 was the first electronic tachometer. Yes it will fit in the car but you will need to wire it up. You will need to change the distributor to an HEI style to operate the tach but it will work and bolt up to the gauge inner bezel just fine.

Willcox Inc.

Dec 21, 2007 | 02:24 AM

66roadster427

Instructor

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From: Dallas Texas

Quote:

Originally Posted by Willcox Corvette

Couldnt you take a feed from the coil to trigger the tacho or would it have to come from an HEI dizzy?

Dec 21, 2007 | 05:57 AM

Ragtop_Rob

Team Owner

Joined: Jan 2003

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From: Freestate Corvette Club! Elkridge, MD

St. Jude Donor '17

The numbers actually do match, there is a slight difference in the screws that hold the face plate on but you really have to know it is there to see it

Dec 21, 2007 | 02:43 PM

7T1vette

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From: Crossville TN

I think [if you research possible sources] you can get the original unit repaired for less than it would cost to buy an electric unit and the parts to get it working.

Dec 21, 2007 | 08:27 PM

taylorsk8

Thread Starter

Racer

Joined: Aug 2006

Posts: 290

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From: Saskatoon Saskatchewan

Heres the thing, my 73 tach works fine, but the distributor on the engine is not tach drive. (engine was in when I bought the car and they had a crappy electric tach hose clamped tot he steering column) So now I want to swap the mechanical 73 tach for a look alike electric tach for this engine, and possible an LS swap in the future.

T