Home First Gen Mustang 1968 Ford Mustang 1968 Ford Mustang Axle Information & Ratios The first table is the code and gear ratio. If you know your axle tag number, simply go to the second table. Axle code Ratio & type 0 2.50 open differential 1 2.75 open differential A 2.75 locking differential 2 2.79 open differential B 2.79 locking differential 3 2.80 open differential C 2.80 locking differential 4 2.83 open differential D 2.83 locking differential 5 3.00 open differential E 3.00 locking differential 6 3.20 open differential F 3.20 locking differential 7 3.25 open differential G 3.25 locking differential 8 3.50 open differential H 3.89 locking differential No Subscription? You’re missing out Get immediate ad-free access to all our premium content. Get Started Already a Member? Sign in to your account here.