Question about 1988 Pontiac Firebird
I have an 89 Formula 350. I just swapped the rear from an open diff 2.73 to a limited slip 4.10. now at 70mph it reads 100mph. I can't find a sleeve to fit the larger speedo gear. anyone know where I can find one or suggestions on how to ditch the governor?
With the difference in ratio, the drive wheels rotate at a faster rate of RPM. you will also notice that the motor revs higher RPM as well and that will not change. However, you may need to change the speedo cable to resolve the speedometer discrepancy.
Posted on Sep 17, 2009
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Posted on Jan 02, 2017
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