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08-30-2010 12:35 PM #1
tire size makes RE ratio change how much?
3:89 Re w 26" tall tires, but they are too narrow. So I want to put on 275 60 15's which are 28' tall. Clearence on the car is not an issue there is plenty. given the added dia. I am sure rpm will decrease some. Which will not break my heart. Those 3:89's make the engine howl pretty good at 70 MPH (459 dyno'd w drivetrain load HP). But how much will the added 2" change it?Last edited by Dgas56; 08-30-2010 at 12:38 PM.
Attended my first drag race in 1961 and hooked on cars ever since.





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I’m also late to this party. RIP John Boy
John Norton aka johnboy