[Asshat]

Originally Posted by cwcarpenter98

TH350 will not change anything. If you decide to change transmissions, you need to go with an overdrive transmission to drop the revs down. Just a transmission change might not drop the revs enough for your liking, but an overdrive trans with 4.10 gears would be a pretty good setup.

Also, if you decide to keep the original rear and go with some 4.10s, you could have the 3rd member set up by a shop if you didn't want to do it yourself, and you wouldn't have to pull the entire axle from the truck. The pinion and ring gears are set up together in the 3rd member

I thought the rear end gears cannot be changed.