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160 MPH Trans Am Speedometer Upgrade

Ditch your slow 100 MPH  speedometer and replace it with a 160 MPH speedometer from a 1974 or older Firebird. or Trans Am. This is a direct replacement. They can usually be found on eBay.com.

Just remove the dash bezel, then the instrument cluster. Now remove the clear plastic with the attaching "pop" rivets.

Now remove the two screws from the back of the speedometer and replace speedometer with the 160 MPH unit.


Here is how it looks in my 1978 T/A:



Feel free to drop me a note. * I am looking for some good articles for the third and fourth gen birds. If you have any that you would like to see on this site send them to me and I will post them on my site.     

  • The information in here is just an outline.
  • The author claims no responsibility for the info contained in these pages. 
  • If unsure of any tip or modification seek a professional for the job.
  • In some states this may violate pollution laws
  • Check with your state on the laws.
  • Not affiliated with Pontiac or General Motors