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10/25/13 7:21am - Original Message: 'tach options?'
Davefromarizona Lifetime Member
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Phoenix, AZ - USA

Vette(s):
1975 Stingray Nomad Wagon, with Daytona front, custom hood scoop, dual side vents; 420HP 350; Doug Nash 5 speed; 1980 rear end W/4:11 gears; Cherry Red metallic paint.

Joined: 3/13/2004
Posts: 534
Howdy again!  With this trip coming up, doing some minor mods to the stock Vette.  Now, I am doing away with the points, putting in a HEI dist.  I know this will do away with my mechanical tach.  Once I get back home, I am gonna keep the HEI, and am wondering about Tach options, got a few ???
1.  To our Sponsors: Does anybody sell a electronic tach that looks like the original and fits into our original bezel?
2.  Has anybody replaced the manual tach with an electronic, and how hard was it?
   If those options are not avail, I will just install a small tach, but don't really like that option....
  Thanks all! dave.


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10/25/13 8:48am - Reply: 'Re: tach options?'
apasbigal
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goldens bridge, NY - USA

Vette(s):
1972 T-Top 350 auto, matching numbers,Blue, ac

Joined: 11/3/2003
Posts: 498
Dakota gauges makes a direct fit electric tach for c3's. /Sumitt racing sells a complete instrument kit which includes the tach. I don't know about individual gauges. It could be a start Big Al

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10/25/13 9:51am - Reply: 'Re: tach options?'
daveo76
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Vancouver, WA - USA

Vette(s):
1976 Silver/Firethorn. L48, 4spd. Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.

Joined: 8/25/2005
Posts: 831
I happened to be reading on the "other forum" last night (was researching distributors and the subject of tach drives was being discussed) that a '75-'77 electronic tach will mount up to the older cars.  Maybe you could find one on e-bay.  But I have no idea if the guy that posted that knew what he was talking about....

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1976 Silver/Firethorn.  L48, 4spd.  Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.
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10/25/13 11:36am - Reply: 'Re: tach options?'
dyoes
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Zachary, LA - USA

Vette(s):
1974 L-48 Auto. Just your basic Vette. GM crate motor w/vortec heads and intake. Crane cam. Scorpion rockers, Edelbrock carb. Lots of parts still in boxes... :(

Joined: 1/27/2013
Posts: 201
Dave, I have a '75 tach in my '74 (74 was the last year of the cable driven tach). All you need is a hot 12v switched lead (you can tee off of the pink ignition wiring in the dash harness), a ground, and a single wire from the HEI distributor to the third lead. The tach will bolt right in.
Another option is to keep the stock tach, and buy an HEI distributor with the cable drive connection. Probably a LOT easier than pulling and swapping the old tach, if it's still working. Here's an eBay example, not that I'd buy a distributor from eBay!

http://www.ebay.com/itm/SBC-CORVETTE-TACH-DRIVE-350-383-HEI-DISTRIBUTOR-6515-Red-/330999248576


Good luck. Darryl

|UPDATED|10/25/2013 9:36:15 AM (AZT)|/UPDATED|


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10/25/13 11:46am - Reply: 'Re: tach options?'
Adams' Apple Lifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Joined: 11/8/2003
Posts: 19458
The '75-7 tachs will fit in the dash, but then you need the wiring harness and stuff to make it work....Unhappy



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Joel Adams
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10/25/13 8:24pm - Reply: 'Re: tach options?'
Davefromarizona Lifetime Member
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Phoenix, AZ - USA

Vette(s):
1975 Stingray Nomad Wagon, with Daytona front, custom hood scoop, dual side vents; 420HP 350; Doug Nash 5 speed; 1980 rear end W/4:11 gears; Cherry Red metallic paint.

Joined: 3/13/2004
Posts: 534
Unfortunately, I already got the HEI, the run is coming up fast and I wanted to have it ready for a trial run next weekend.   I am thrilled to find out that the 75 tach will fit, the next thing on the agenda is to (finally) rewire the dash, so I will put in a new gauge set with it.  That's the fun with these toys, they are never quite done, are they?  Thanks to all, d.


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