- Joined
- Jan 24, 2009
- Messages
- 2,547
Any C4 Gurus able to help me out? I have just finished converting my 69 DD to the C4.Everything is in and bolted up properly. The only thing that is not on is the kickdown rod because I have a holly 2 barrel carb and it looks like I am going to have to do some modification to it to get it to work properly. So I have the lever on the tranny in the up position.( I have actually tried both positions and down will not allow it to shift to 3rd.)
The problem I am having is 3rd gear is not working properly it seems week. The tires will spin on the jack stands but very slow and with very little power. So I took it down the street and it will not shift by its self into any gear I had to manually shift it. When I got to 3rd gear it felt like it coasted for a few seconds and then when it grabbed it went to 1st gear and the tires barked. 1st and 2nd gear worked good when shifting manually.
I have gone back over the simple things to make sure it is nothing I did when I put it in.
1. Made sure the shift linkage was right.
2. I am getting good vacuum to the shift module.
3. The transmission fluid looks good… still clean with no foaming.
I’ll tell you that honestly I know nothing about the inside workings of transmissions. Mine was rebuilt with a Transtar overhaul kit and a B&M Transpack shift kit when it was rebuilt. The pump was bad and had to be rebuilt. Other than that I am clueless. Does this problem sound like it is something in the shift kit was not installed properly? If so I still have the directions and could probably figure it out, or does it sound like something went wrong with the rebuild kit?
The problem I am having is 3rd gear is not working properly it seems week. The tires will spin on the jack stands but very slow and with very little power. So I took it down the street and it will not shift by its self into any gear I had to manually shift it. When I got to 3rd gear it felt like it coasted for a few seconds and then when it grabbed it went to 1st gear and the tires barked. 1st and 2nd gear worked good when shifting manually.
I have gone back over the simple things to make sure it is nothing I did when I put it in.
1. Made sure the shift linkage was right.
2. I am getting good vacuum to the shift module.
3. The transmission fluid looks good… still clean with no foaming.
I’ll tell you that honestly I know nothing about the inside workings of transmissions. Mine was rebuilt with a Transtar overhaul kit and a B&M Transpack shift kit when it was rebuilt. The pump was bad and had to be rebuilt. Other than that I am clueless. Does this problem sound like it is something in the shift kit was not installed properly? If so I still have the directions and could probably figure it out, or does it sound like something went wrong with the rebuild kit?
Last edited: