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01-28-2016, 09:29 PM
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#1 |
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Registered User
Join Date: Aug 2006
Location: Athens, Georgia
Posts: 1,458
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Repro Tachs: Questions about them
Does anybody know if the repro tachs work with modern electronic ignition?
Anybody have one they installed on their truck?
__________________
'61 Suburban daily driver: off the road due to 180-pound 8-pt buck! '62 K-10 long-step project '61 C30 Camper, aka "Valdez" There's no cool like Old School |
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01-28-2016, 11:24 PM
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#2 |
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Registered User
Join Date: Feb 2015
Location: Ridgecrest, CA
Posts: 94
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Re: Repro Tachs: Questions about them
They should work with any V8 ignition.
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01-29-2016, 03:44 PM
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#3 | |
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Registered User
Join Date: Aug 2006
Location: Athens, Georgia
Posts: 1,458
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Re: Repro Tachs: Questions about them
Quote:
I've been a tech editor for car magazines for 20 years... I know a lot of things that "SHOULD" work, do not.  Hence the question. Wondering if anyone has had any direct experience with installing a repro tach on a truck with HEI, MSD, etc. ignitions, and had it work. The sine wave of electronic ignition versus points ignition is different, and original tachs often can't read the waves generated from electronic ignition. A lot of reproduction tachs can't either. (I've got a friend who converts them to run with electronic ignition... he did an original Sun 8.5-grand tach for me that's going in my nostalgia Altered race car) -Brad
__________________
'61 Suburban daily driver: off the road due to 180-pound 8-pt buck! '62 K-10 long-step project '61 C30 Camper, aka "Valdez" There's no cool like Old School |
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01-29-2016, 04:52 PM
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#4 |
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Moderator
  
Join Date: Aug 2011
Location: China Spring, TX
Posts: 7,280
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Re: Repro Tachs: Questions about them
You "may" have to use a tach filter: http://www.classicparts.com/1947-72-...ctinfo/24-736/
__________________
Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats? |
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01-29-2016, 04:59 PM
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#5 |
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Registered User
 
Join Date: Nov 2012
Location: fremont. nc
Posts: 272
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Re: Repro Tachs: Questions about them
I installed the Repo tach from The Car and Truck Shop. It works great. I have a 350 with an HEI distributor. You can install it without removing gauge cluster from truck.
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01-29-2016, 05:06 PM
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#6 |
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Moderator
Join Date: Aug 2011
Location: China Spring, TX
Posts: 7,280
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Re: Repro Tachs: Questions about them
Well there you go.
I have that one in my gauge cluster now. Good to know jb9281, thanks. 
__________________
Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats? |
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