Quote:
Originally Posted by Captainfab
The trans being a 4 speed really doesn't play much of a part in selecting the rear gear. That is unless you want to go with a really high rear gear and have to use 1st gear all the time. If you will be running a 283, don't be too concerned about the highway rpm's. The 283's like rpm's and need the rpm's to build their torque. They don't have much low end torque. In that case the 4.10's would be fine. Now if you are upgrading to say a 350, then you can get away with a higher rear gear, say like a 3.73 or 3.54. The size of tires do play a part in selecting the rear gear. A 14 bolt, Dana 60 or 70 would be a good choice.
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Thanks again John...I have a 305E v6...so I think the 4.10 gears would be good? Here is a picture of the rear end I found. He didn't know if it were a Dana 70, I assumed it was. It came out of an 1988 C30.