I'm looking to increase Horsepower and traction in my otherwise stock 73 Rivi but I can't find any trace of 9 3/8 buick posi. I would prefer a 3.23 Buick Posi but any Buick Posi that fits in my rear end will do
A post 70 Buick or Olds 9 3/8 3.23 ratio should work. A Buick Estate wagon or the equivalent Olds those years could be donors. For a cheaper increase in performance, have the ignition advance recurved.
I have a 53k mile posi rear end out of a 71 riviera, nice shape just needs to be sand blasted and painted. ill take $700. 401-616-7020
Ryan—you may want to post the ratio and how you verified it. You are going to be asked for this information anyway. Pictures are also well received.
