royale 75 Posted October 30, 2003 Share Posted October 30, 2003 How can I determine what gears are in the rear end of my 75 Olds 88 royale? I'd like to bump the ratio a bit but need a starting point. What options are readily available? Link to comment Share on other sites More sharing options...
mikebob Posted October 31, 2003 Share Posted October 31, 2003 According to the Chassis Service Manual I have, the 75's all came standard with a 2.73 gear ratio. As far as upgrades, I am not sure. Link to comment Share on other sites More sharing options...
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