C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

1970 tachometer conversion

Thread Tools
 
Search this Thread
 
Old Aug 22, 2011 | 12:48 AM
  #1  
ratical12001's Avatar
ratical12001
Thread Starter
Intermediate
 
Joined: Dec 2009
Posts: 45
Likes: 0
From: garden city kansas
Default 1970 tachometer conversion

I was just looking through motorworks catalog, and i saw that they have is a 1975 tachometer repair kit. says use your own needle and face. will this work to convert my 1970 over to electrical tach. Has any one else seen this ?
Reply
Old Aug 22, 2011 | 02:01 AM
  #2  
StingrayLust's Avatar
StingrayLust
Burning Brakes
10 Year Member
 
Joined: Feb 2011
Posts: 850
Likes: 12
From: Shakopee MN
Default

Check out my 2 threads about this process as I converted my '71 mechanical to an HEI electronic tach here and here.

Hopefully it may help if you decide to do it yourself. Also, don't forget to buy a tach filter. I bought my new board from Willcox and it's been working great after my conversion.
Reply
Old Aug 22, 2011 | 06:35 PM
  #3  
72LS1Vette's Avatar
72LS1Vette
Safety Car
20 Year Member
 
Joined: Aug 2001
Posts: 4,883
Likes: 11
From: North Easton Mass
Default

Originally Posted by ratical12001
I was just looking through motorworks catalog, and i saw that they have is a 1975 tachometer repair kit. says use your own needle and face. will this work to convert my 1970 over to electrical tach. Has any one else seen this ?
If it's the 602-779 kit that I just looked up, then no, it won't work. The kit just includes the circuit board. You have to get the tach needle driver also, which is the small can-shaped object in their picture. The best way to convert your tach is to buy a 75-up tach and swap your tach face onto it. The needles are also counter-wieghted differently so you have to use an electric tach needle.



Rick B.
Reply
Old Aug 22, 2011 | 08:50 PM
  #4  
Willcox Corvette's Avatar
0Willcox Corvette
Former Vendor
 
Joined: Aug 2006
Posts: 76,656
Likes: 1,847
From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
Default

Originally Posted by 72LS1Vette
If it's the 602-779 kit that I just looked up, then no, it won't work. The kit just includes the circuit board. You have to get the tach needle driver also, which is the small can-shaped object in their picture. The best way to convert your tach is to buy a 75-up tach and swap your tach face onto it. The needles are also counter-wieghted differently so you have to use an electric tach needle.



Rick B.
Reply
Old Aug 22, 2011 | 10:33 PM
  #5  
sly vette's Avatar
sly vette
Safety Car
 
Joined: Oct 2005
Posts: 3,570
Likes: 1
From: Algonac Michigan
Default

Why are you abandoning the mechanical tach?
Reply
Old Aug 23, 2011 | 06:27 AM
  #6  
KanuckZ06's Avatar
KanuckZ06
Instructor
 
Joined: Oct 2009
Posts: 180
Likes: 0
From: Lakefield Ontario
Default

Sly-Vette
If you want to convert to a Fuel Injection system like FAST, they require that you use a different distributor, they don't have a mechanical tach drive.
Reply

Get notified of new replies

To 1970 tachometer conversion





All times are GMT -4. The time now is 07:08 AM.

story-0
2027 Corvette vs The World: Every Model vs Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-20 17:58:41


VIEW MORE
story-1
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-2
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-3
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE
story-4
10 Things C8 Corvette Owners Hate (But Won't Tell You)

Slideshow: 10 things C8 Corvette owners hate, but won't tell you.

By Joe Kucinski | 2026-04-01 18:36:07


VIEW MORE
story-5
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

Slideshow: Should you add one of these incredible Corvettes to your garage?

By Brett Foote | 2026-04-01 18:14:05


VIEW MORE
story-6
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

Slideshow: Every Corvette Grand Sport explained

By Joe Kucinski | 2026-03-26 07:13:44


VIEW MORE
story-7
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

Slideshow: Breaking down the 2027 Grand Sport, Grand Sport X, Stingray, and LS6 V8.

By Michael S. Palmer | 2026-03-26 13:48:45


VIEW MORE
story-8
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

Slideshow: 5 reasons bad drivers crash sports cars & 5 ways to avoid a costly shame!

By Joe Kucinski | 2026-03-25 16:32:55


VIEW MORE
story-9
7 Bolt-On Upgrades From Extreme Online Store to Level Up Your C6 Corvette

Slideshow: Check out these easy-to-install upgrades from Extreme Online Store that reshape the look and feel of the C6 Corvette.

By Pouria Savadkouei | 2026-03-23 17:00:27


VIEW MORE