I have an 85 IROC that I am putting a carbed 350 in with a 5 speed transmission. I am debating whether to use 3.23 or 3.73 gears. The car will be a daily driver though it won't be driven much on highways above 55 mph. I currently have both sets of gears. The 3.23s are currently installed in the 85 disc rear end (with limited slip) I have while the 3.73s are in a drum rear end I have (with no limited slip). How hard would it be to swap the gears if I do decide to use the 3.73s? Any help/suggestions greatly appreciated.
Supreme Member
I swapped out my 3.23's in favor of 3.73's for my carb'd 5 speed and never looked back. If you do alot of high speed freeway driving they might not be the best choice.