automatic tranny upgrade

[johnny86]

i have a 1986 D50 with a 2.6l and 3speed auto. the 3speed auto isnt cutting but want to keep an automatic
and was wondering what my options are

[Rahtid]

You can rebuild it, the transmission is a 904 transmision used in chrysler cars and truck good to about 700hp with the right parts

[pennyman1]

You can get an overdrive automatic from a 87 up 2.0 ram 50 truck, but be sure to check the bolt spacing on the bell housing before you buy it. The 2.6 with a 3 spd auto is a narrow bolt pattern, but the 2.6 auto with OD is a wide bolt pattern. Another alternative is to change it out for a 5 spd maunal from a 2.0, although you also have to changeout the pedal setup and put a cable mount on the firewall to operate the clutch.

[Dave the dude]

Rahtid You said the 904 was good for 700HP. Do you know how much the O.D. tranny that are in these trucks will take?

[Rahtid]

there are two O.D transmission,the a500 is a 904 with overdrive, i forgot the name of the other transmission but it a borgwarner it can hold 500-550 maybe even more just parts are harder to find, what are looking to do

[Dave the dude]

I'm not going to do anything special right now. Just wondering how tough they are.

[Rahtid]

what year is the truck

[pennyman1]

The other tranny is an Aisin - same as a nissan 300zx. Force 10 has a shift kit for it. For more info, check out starquest forum - lots of info on both trannies there