Ever gear ratio was offered as an option back in 69, it's hard to tell whats in yours, I believe the standard gear ratio was a 3.08 gear.
more than likely a 3.08 gear ratio but could also be in the 2.90's some also.
43 ring gear 14 pinion
You change the ring and pinion gears
count your teeth on your ring gear <big gear> and on you pinion <little gear> and the divide the ring gear teeth by the pinion
41 teeth on the ring gear, 10 on the pinion gear.
An axle ratio is a comparison of the number of ring gear teeth to the number of pinion gear teeth in a differential. For instance, a 3.55 gear ratio means that there are 3.55 ring gear teeth to every 1 pinion tooth.
That is a 4:10 gear ratio. Just divide the number of teeth on ring gear into the number of teeth on the pinion gear and then round it off and that will be the gear ratio.
The # of teeth on the ring gear and the pinion gear. There is always more teeth on the ring gear then the pinion gear. And the way you determine the gear ratio is devide the # of teeth that's on the pinion gear into the # of teeth that's on the ring gear and that will be the gear ratio. The 4 gears that are the same size and run together is called the spider gears. Do not count those gears they have nothing to do with the gear RATIO.
depends most chevys came stock with 2.89:1 ratio in the dif. however the easiest way to find out exactely what our vehicle has is to remove the dif cover plate and count the teeth on the ring gear, write that down, count the teeth on the pinion gear write that down and then divid the ring gear by the pinion gear. it is called "driven divided by drive" an example if your ring gear had 37 teeth and your pinion gear had 9 teeth, it would be 37/9 which is 4.11, so you would have a 4.11:1 gear ratio in your dif.
ratio is 3.73
Take the rear end plate off and count the pinion gear teeth, write it down. Now count the ring gear teeth, write it down. Then divide the pinion # into the ring gear # and that will be the gear ratio.
In 69 you could get any gear ratio your heart desired, from 3.08 to a 4.56 if you wanted it so it would be hard to say what any ss out there had in it for sure.