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-   -   1975 OEM gauge cluster questions (https://forums.maxperformanceinc.com/forums/showthread.php?t=594404)

cdb 04-04-2009 12:53 PM
1975 OEM gauge cluster questions
 
I have a 1975 455 4 speed car I am restoring. The gauge cluster looks to be incorrect, the speedo is 160 mph, and the tach is 8000 rpm. Are either of these correct for a 1975 Trans am ? Everything else in the dash is original such as radio , 8 track player etc, so it has not been a torn apart car. What speedo and tach should be in this car , the 100 mph speedo, and the 6 K tach ? TIA, Craig

Held for Ransom 04-04-2009 04:56 PM
What is the tach redline? What are the readings on the water temp gauge?

cdb 04-04-2009 05:07 PM
the redline starts at 5750 and goes all the way to 8000 (of course). The water temp is 100, 220, 260. The other thing I am wondering is , my 160 speedo has the two holes at bottom for the brake light, and the fasten seat belt light,as the 75 -79 100 MPH speedos are. All the 160 speedos I have seen only have a rectangular single hole for the brake light. Any idea what I have, did the factory make the 160 speedo with the two indicator light holes ? Craig

77 Canamman 04-04-2009 05:51 PM
The speedo in your car came in mid 1972-1974 Firebirds. The speedo with the single brake warning lamp came in 1970-early 1972 Firebirds.
1975 Firebirds would have come with a 100 MPH speedometer.

Held for Ransom 04-04-2009 07:53 PM
How early in the '75 model year was the car assembled? The 100 220 260 suggests a '74 package (maybe late '73).

sinister76ta 04-07-2009 05:05 PM
75 Speedo
 
Quote:
Originally Posted by Held for Ransom (Post 3616587)
How early in the '75 model year was the car assembled? The 100 220 260 suggests a '74 package (maybe late '73).
The 75 speedo cluster came with the 8k tach and the same water/oil gauge markings as a 74. The only difference is the speedo in the 75 was 100mph and the 74 was 160mph. The speedos can be swapped out real easily in the clusters as the speed is only held in by 2 screws in the back and the plastic cover.

form74 04-07-2009 07:27 PM
Quote:
Originally Posted by cdb (Post 3616298)
I have a 1975 455 4 speed car I am restoring. The gauge cluster looks to be incorrect, the speedo is 160 mph, and the tach is 8000 rpm. Are either of these correct for a 1975 Trans am ? Everything else in the dash is original such as radio , 8 track player etc, so it has not been a torn apart car. What speedo and tach should be in this car , the 100 mph speedo, and the 6 K tach ? TIA, Craig

I have a 100 MPH speedo out of a 75 Formula if you need it, the rest of the of the cluster is in my 74 with my 160 speedo.

Held for Ransom 04-07-2009 11:29 PM
Quote:
Originally Posted by sinister76ta
The 75 speedo cluster came with the 8k tach and the same water/oil gauge markings as a 74. The only difference is the speedo in the 75 was 100mph and the 74 was 160mph. The speedos can be swapped out real easily in the clusters as the speed is only held in by 2 screws in the back and the plastic cover.
I think I should have said the 100 220 260 started with the '74 (possibly late '73) model. But, I'm still not convinced that an early build '75 COULD NOT POSSIBLY have a 160 speedo installed from the factory. Just as you're stating that they had 8,000 RPM tachs.

BAD455TA 04-08-2009 08:09 AM
I will swap you mine...I have a 100 Speedo and 6K tach...always hated it, want the 160/8K


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