Quote:
Originally Posted by RaTcheTmasTer
I have 3 different ones that I have collected over the years. . . one is for a points distributor, and two are hei. Do you need the wire harness as well? Is there a specific aspect to Identify a 77?
Tim
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The tachs are no different from the points to HEI distributors. the separate tach wiring is easy to make up . looking closely at the back of the cluster it will tell you where each of the wires go.
there are dozens of threads on the ID of these , but short & sweet version is ----.
73-75- AMP gauge, not Volt
76-77- Volt gauge and mechanincal oil pressure
78-79- volt gauge, Electric oil pressure
80-87- larger Font and 85 MPH speedo.
And NO, for the most part they are not interchangeable.
you wouldn't believe how many small things are different from year to year either. crossy
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2007 LBZ GMC Sierra, ECSB
2006 LM7 RCSB Silverado
98 Vortec project.
94,3500,6.5L 4L80
81 SWB GMC POS finally gone
73 Pinto, stock, w/CragarSS's-eww
84,C10 SWB-Yella,stock
86 K10 SWB-Red, hopped up 305,4/S
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