Speedometer gear question - The Supercar Registry

09-20-2004, 12:49 AM

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Speedometer gear question

I am trying to recalibrate the speedometer in my 75 Firebird 350 4 bbl with turbo 350 trans (inherited from my grandmother who purchased it new in fall '75). Years ago I replaced the 2.76 open 10-bolt rear with a 3.42 10-bolt posi rear. Anyone out there know what amount of teeth the correct speedometer gear should have?

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