904 for Towing?
Most all 904 trans missions in Truck's, Taxi's , Vans, and fleet vehicles. Had a Part throttle kick down servo, Easily installed . three screws hold it on the side of the valve body. . This does not allow the transmission to lag in the high gear after slowing up for a turn or traffic and then trying to resume speed without using throttle pressure manual kick down.
Performance cars did not come with them due to safety reasons. The slightest touch of the throttle and it goes down into a second gear as needed. This is a great add on for any transmission 904 or 727. I installed one on every automatic car I owned.
A lot of /6 vehicles had them also. Same servo for 904-727. If any one of you can locate one give it a try. You will never have to pull the transmission into a lower gear. You will always want one on every mopar.
It does it by itself. Give it throttle and it downshifts. as soon as it shifts up give it a little more and it down shifts. You can keep doing that until you are into manual throttle pressure kick down at wide open throttle. Wide open throttle shift can be raised with a lighter governor piston in the tail shaft. Both are very easy to do in the car. Most all north east 340's I have owned had the lighter governor. Performance cars never had the servo due to the fact that they were a little touchy to drive in the wet with a sure grip.
The top right out of the three shown below is 340 and 426 max wedge lighter governor piston They are the same for both motors
Easy to remove and change your kick down passing gear shift point. After removal you can change the piston or you can do it on the tail shaft in the car
These two up grades will totally change your drive-ability on a performance car .
The kick down servo only for towing. I would not do the governor for towing. It will tear the trans up with a higher RPM shift with weight
Most all 904 trans missions in Truck's, Taxi's , Vans, and fleet vehicles. Had a Part throttle kick down servo, Easily installed . three screws hold it on the side of the valve body. . This does not allow the transmission to lag in the high gear after slowing up for a turn or traffic and then trying to resume speed without using throttle pressure manual kick down.
Performance cars did not come with them due to safety reasons. The slightest touch of the throttle and it goes down into a second gear as needed. This is a great add on for any transmission 904 or 727. I installed one on every automatic car I owned.
A lot of /6 vehicles had them also. Same servo for 904-727. If any one of you can locate one give it a try. You will never have to pull the transmission into a lower gear. You will always want one on every mopar.
It does it by itself. Give it throttle and it downshifts. as soon as it shifts up give it a little more and it down shifts. You can keep doing that until you are into manual throttle pressure kick down at wide open throttle. Wide open throttle shift can be raised with a lighter governor piston in the tail shaft. Both are very easy to do in the car. Most all north east 340's I have owned had the lighter governor. Performance cars never had the servo due to the fact that they were a little touchy to drive in the wet with a sure grip.
The top right out of the three shown below is 340 and 426 max wedge lighter governor piston They are the same for both motors
Easy to remove and change your kick down passing gear shift point. After removal you can change the piston or you can do it on the tail shaft in the car
These two up grades will totally change your drive-ability on a performance car .
The kick down servo only for towing. I would not do the governor for towing. It will tear the trans up with a higher RPM shift with weight
