Tach differences/install - The 1947 - Present Chevrolet & GMC Truck Message Board Network

bikes&bowties · 12-11-2010, 05:09 PM

What are the differences between a 77 tach and an 84 tachometer? Would the 77 tach and fuel gauge bolt right into an 84 cluster and would the fuel gauge work were there is no gauge? or would i need to re wire something?

1BadSS · 12-11-2010, 05:46 PM

All of the info you'll ever need to know about 73-87 tachs.

http://www.73-87.com/7387garage/inte...achometers.htm

bikes&bowties · 12-11-2010, 06:03 PM

That helps. But does the tach do anything with the printed circut. Since it gets all its power,ground, signal from separate wires?

1BadSS · 12-11-2010, 06:06 PM

Quote:

Originally Posted by bikes&bowties

That helps. But does the tach do anything with the printed circut. Since it gets all its power,ground, signal from separate wires?

Looking at the back of the 79 cluster I just picked up for my 79. I'd say no. As it has the three prongs as mentioned.

bikes&bowties · 12-11-2010, 06:16 PM

So I suppose I could get a small fuel gauge for the 84 cluster and put it in (since it should just bolt in) and then stick the 77 tachometer in. thats what im gathering from that kinda..

12-11-2010, 05:09 PM	#1
bikes&bowties Registered User Join Date: May 2009 Location: Washington Posts: 663	Tach differences/install What are the differences between a 77 tach and an 84 tachometer? Would the 77 tach and fuel gauge bolt right into an 84 cluster and would the fuel gauge work were there is no gauge? or would i need to re wire something?

12-11-2010, 05:46 PM	#2
1BadSS NOT REALLY BANNED! Join Date: Jul 2004 Location: Shawnee, KS Posts: 1,072	Re: Tach differences/install All of the info you'll ever need to know about 73-87 tachs. http://www.73-87.com/7387garage/inte...achometers.htm __________________ 1987 Mustang Coupe - 2.7 Stroker, 78mm turbo, Stainless header, 3" Exh, FMIC, 160lb/hr Injectors, MS3, twin walbro 255's, 34psi. Eating V8's daily. 04 Pontiac GTO 04 Ford Mustang GT 68 C20 LWB stripper truck 73 K5 Cheyenne 76 C20 Sierra Crew SRW 88 K20 Suburban I'm not hammering on metal just to hammer, i'm creating a piece of art.

12-11-2010, 06:03 PM	#3
bikes&bowties Registered User Join Date: May 2009 Location: Washington Posts: 663	Re: Tach differences/install That helps. But does the tach do anything with the printed circut. Since it gets all its power,ground, signal from separate wires?

12-11-2010, 06:16 PM	#5
bikes&bowties Registered User Join Date: May 2009 Location: Washington Posts: 663	Re: Tach differences/install So I suppose I could get a small fuel gauge for the 84 cluster and put it in (since it should just bolt in) and then stick the 77 tachometer in. thats what im gathering from that kinda..



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.