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#1
06-04-2014, 04:35 PM
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75 Firebird Tach Question
I have several instrument clusters that I was told fit a 75 Firebird. My question is what was the difference in the cars that had the 6k and 8k tachs?
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Jack Tar (Old English Slang for Sailor) 
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#2
06-04-2014, 10:03 PM
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Re: 75 Firebird Tach Question
Can you post a photo? The 70-74 were the higher 8000 RPM tachs, I believe, and the speedo's went a lot higher as well. The speedo in my Gramma's 75 Firebird goes to 100 while the 73 goes to 160
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#3
06-05-2014, 01:49 AM
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Re: 75 Firebird Tach Question
8000 tachs were used till 1976. the speedo went from 160 to 100 in 1975 Tachs were lowered to 6000 in 1977
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1970 GTO JUDGE RAM IV 23,000 miles 1969 GTO convert RAM AIR 4spd 1964 GTO convert survivor
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#4
06-05-2014, 04:05 PM
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Re: 75 Firebird Tach Question
It looks like these were 77 and later gauges that someone was going to put 8K tachs in.
   
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Jack Tar (Old English Slang for Sailor)
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