The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1960 - 1966 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 07-05-2017, 04:25 PM   #1
sanford66
Registered User
 
sanford66's Avatar
 
Join Date: Jun 2007
Location: Everest Ks
Posts: 749
GMC Tach?

Okay guys is this a GMC tach or is it for something else. Joseph
Attached Images
  
__________________
1970 Chevelle Nomad station wagon
1966 C-10 lwb,250-six,granny 4speed
1966 C-10 lwb,factory A/C,Custom Cab
1954 Delray 2-door sedan [rat rod project]
sanford66 is offline   Reply With Quote
Old 07-05-2017, 05:09 PM   #2
chevylookin
Registered User
 
Join Date: Mar 2011
Location: garden grove
Posts: 175
Re: GMC Tach?

This looks like a speedometer with the back cable input but it says RPM's. Strange. Maybe to an old motorcycle. Any markings on it? How wide is the lens?
chevylookin is offline   Reply With Quote
Old 07-05-2017, 05:43 PM   #3
padresag
Registered User
 
Join Date: Feb 2008
Location: Sidney,b.c.
Posts: 4,425
Re: GMC Tach?

Quote:
Originally Posted by chevylookin View Post
This looks like a speedometer with the back cable input but it says RPM's. Strange. Maybe to an old motorcycle. Any markings on it? How wide is the lens?
mechanical tach as used on some of the medium duty trucks
ron
padresag is offline   Reply With Quote
Old 07-07-2017, 02:41 AM   #4
sanford66
Registered User
 
sanford66's Avatar
 
Join Date: Jun 2007
Location: Everest Ks
Posts: 749
Re: GMC Tach?

Ahh, I see. I knew it was mechanical. The light duty trucks were electric I was thinking. I saw it on Craigslist and wondered what it was. Thanks, Joseph
__________________
1970 Chevelle Nomad station wagon
1966 C-10 lwb,250-six,granny 4speed
1966 C-10 lwb,factory A/C,Custom Cab
1954 Delray 2-door sedan [rat rod project]
sanford66 is offline   Reply With Quote
Old 07-07-2017, 10:15 AM   #5
padresag
Registered User
 
Join Date: Feb 2008
Location: Sidney,b.c.
Posts: 4,425
Re: GMC Tach?

all diesels of this vintage used mechanical due to lack of ignition system to send impulses. some gas pots also used them.
here is another form of tach, which is the hand held by Starrett and this one has been around the family as long as I have been around. just put the black rubber tip on the end of the crankshaft(centre) and read

ron
padresag is offline   Reply With Quote
Old 07-09-2017, 08:06 PM   #6
cryowagon
Registered User
 
Join Date: Apr 2004
Location: Piedmont, OK
Posts: 44
Re: GMC Tach?

International Harvester
cryowagon is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 10:49 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com