tach filter
Thread Starter
Heel & Toe
Joined: Jan 2006
Posts: 23
Likes: 0
From: Benson Mn
tach filter
Hi guys, I am new to this forum but I have been following the posts for sometime and as a whole have found you all to be knowlegeable and willing to help. I have been an owner of a "NCRC" 1976 for three years and I am getting to some of the small things that don't work right. My tach has been very eratic since I purchased the car and upon a closer look I can not find the tach filter. Would some one be able to tell me where it should be located? I have been in the car buisness for 34 yrs and have owned a number of muscle cars but this is the first corvette.This car has been the most fun to build and drive of them all. Thank you in advance for any light someone can shed on this question.
Burning Brakes
Joined: Jan 2006
Posts: 876
Likes: 1
From: Same as our leaders Out of my mind
Hi, mine is located on a small bracket on top of the intake manifold, drivers side rear, close to the distributor. It is a capacitor about 1 1/2" long with 2 leads coming out of it. My car is a 1979 Vette with a 350. 
Pro
Joined: Jan 2005
Posts: 539
Likes: 3
From: Twin Cities Minnesota
on my 76 it is located on the intake manifold just in front and little to the drivers side of the distributor. There should be a wire from the distributor to the filter. Follow the two small wires from under the coil and one goes to the tach filter ( at least it did from the factory).
Le Mans Master
Joined: Jun 2002
Posts: 8,339
Likes: 24
From: I can walk to MA
Here is a link to an AIM sheet ...
http://temp.corvetteforum.net/c4/1mo...achfilterj.jpg
Here is a thread where I compare an alternate circuit ...
you can build your own filter - two resistors and
two capacitors from Radio Shack. Soldering skills would help.
http://forums.corvetteforum.com/show...um_id=3&arch=1
http://temp.corvetteforum.net/c4/1mo...achfilterj.jpg
Here is a thread where I compare an alternate circuit ...
you can build your own filter - two resistors and
two capacitors from Radio Shack. Soldering skills would help.
http://forums.corvetteforum.com/show...um_id=3&arch=1
Thread Starter
Heel & Toe
Joined: Jan 2006
Posts: 23
Likes: 0
From: Benson Mn
tach filter
Thank you for the info NHvette. I think I will try a couple of salvage yards first, since GM has discontinued that part. I did find one company that makes a reproduction of the filter for $50.
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Burning Brakes
Joined: Jun 2005
Posts: 764
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From: THE OLDER I GET THE BETTER I WAS! NORTHERN ONTARIO
Originally Posted by Bangkok Dean
Question what does it do and can you run without it? 
