I have a 67 lemans that was originally a 326 automatic car. I've put a 400 with a M-22 rock crusher 4 speed in the car. I don't know the rear gear ratio, but it looks to be very high.
I think there are 2 different 10 bolt rear ends in these cars. I want to go to 3.23 rear gears.
Were can I get the ring gear/pinion and can I use the exhisting rear case, or is there really 2 different ones?
Thanks
