#1  
Old 10-25-2019, 04:18 PM
sport coupe sport coupe is offline
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Default Grand Am Grand Prix tachometer

Will this tachometer fit all 73 to 75 Grand Am and any 73 to 77 with that style cluster?
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  #2  
Old 10-25-2019, 07:56 PM
'ol Pinion head 'ol Pinion head is offline
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Bolt in, yes. function that would be the question. Keep in mind there were two different tachs for '71, 72's, & '73 model Pontiacs. One for points, one for unitized. Eventually, points distribs were no longer offered & every engine received an HEI distributer. Is there an ink stamped date & part number on the rear of the tach? have several such tach clusters mainly for electronic ign use, can pull them out in the AM, & compare.

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  #3  
Old 10-26-2019, 08:53 AM
sport coupe sport coupe is offline
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On back side of tach ink stamped numbers 565800. Does that help identity which year the tach was used? Has a few more letters or numbers but to faint to read.

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Old 10-26-2019, 02:13 PM
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77 Canamman 77 Canamman is offline
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5658007 was the only tachometer part number listed for 1973-74 AH and AG models in the GM parts book.

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  #5  
Old 10-28-2019, 04:25 PM
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Are all the 73 and 74 tach’s able to work on either the points or Hei? Is that wiring harness pictured for a 73/74 model only?

  #6  
Old 10-28-2019, 07:00 PM
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77 Canamman 77 Canamman is offline
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I would say YES.

HEI was a mid year 1974 addition, and unitized was available all of 1973.

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