Hey everybody. I am in the process of installing an 833 overdrive transmission in my '71 Challenger. I looked around on the site and I found a lot of posts that explained this process, but didn't see much that had pictures to go along with it. So I decided to do a writeup to explain the process I went thru to install the shifter and rods. This may or may not fit your exact application. Don't blame me if you follow this and end up breaking your junk!
I'd like to give thanks to Chryco for his help in technical editing this post.
The machined pad on the lower right side of the transmission gives basic information. It's hard to read from the pic, but mine says 833 8 27 85. I assume the last group is the date code.
This was my starting point. The original truck shift rods, shifter, and the rear shifter mount is raw and unfinished.
I used a file to smooth down the casting and drilled and tapped for three 3/8" bolts.
I ordered the E-body billet aluminum shifter mounting plate from Brewers, but I think these are available from several venders.
I mounted the plate with the supplied hardware.
As a reference I marked the original shift bar locations with the truck rods. The bar on the top left, which I will be calling the front bar, is for 3rd and 4th gear. It has the number 67 stamped on it. The bar on the top right, which I will be calling the rear bar, is for 1st and 2nd gear. It has the number 066 stamped on it. The lower bar is for Reverse.
The bars are mounted to a rectangular tab on the transmission. They can be mounted 1 of 4 ways. In this picture the front bar is pointing down, as it was originally, and the number 67 is visible. I turned the rear bar front to back so the number 066 is no longer visible.
As you can see, the rear bar is leaning away from the block
This was my starting point with all bar shown in their respective "neutral" position.
This is the E-body shift rod kit I bought from Brewers, which is also available from several venders. It came with washers and clips. The rods are laying in order: top is 1-2, middle is 3-4 and the bottom is Reverse.
After mounting the shifter to the mounting plate I put the shifter in neutral. To lock the shifter in it's neutral position, place a bolt in the alignment hole. The levers are: left is Reverse, middle is 1-2, right is 3-4.
Here you can see them aligned and 3-4 is on the outside.
I installed the 1-2 rod in the rear bar first.
I adjusted the end piece by eye to get it close, then removed the bolt from the shifter alignment hole so I could swing the Reverse lever out of the way to install the rod.
I installed the clip on the rod, put the shifter back in neutral, and then reinstalled the bolt in the alignment hole.
Next I installed the 3-4 rod in the front bar.
Then I adjusted the end piece and clipped it to the 3-4 lever.
Next I installed the Reverse rod in the lower bar.
Then I adjusted the end piece and clipped in to the Reverse lever.
All the rods are installed. The shifter is in neutral and all three bars are in their respective neutral positions.
All three rods have plenty of fore and aft adjustment available.
There is no interference between the rods at the shifter.
The 1-2 rod at the rear bar does slightly contact one of the case bolts when it is shifted into second gear. This rod probably needs to be tweaked a little to clear this bolt.
Here the transmission is shifted into 1st gear.
...2nd gear.
...3rd gear.
...4th gear.
...and reverse.
Now, this is how everything looks when installed on a transmission out of the vehicle. Once the transmission is installed in the car, however, the 3-4 rod will usually hit the cross member.
With the transmission mount temporarily installed, you can imagine where the 3-4 rod hits the top part of the cross member. The 3-4 rod should follow the same path as the 1-2 rod.
I would suggest bending this rod once the transmission is mounted in the car. I took a guess and hopefully it works out. I put the rod in my bench vise and I was able to bend it without heating it. I reinstalled the bolt to hold the shifter in neutral, adjusted the end piece, and installed the clip. In this picture the shifter is in 3rd gear and it appears that the rod will be up away from the top of the cross member
Here the shifter is in 4th gear, which moved the center of the bend away from the cross member.
Here is the final product, which may require additional tweaks once actually installed in the car.
I give the project a 2 out of 6 for degree of difficulty.
Kyle