I got a 93 d250 diesel with the a 518 trans,needs a rebuilt but was wondering what other dodge trans would work for me? Dont really want to put money in this trans ,others told me this series isnt very good,Got an estimate on rebuild,about $2200

 

47RH swap is the logical upgrade (94-95 2ndgen trans)... its the a518 with a lockup convertor. Its does require the 2ndgen flywheel housing and matching starter though.

 

The A518 with a few decent parts in it, making the rebuild go at around 3000 instead of 2200 is a pretty decent transmission. It does need real cooling, as in a fan cooled frame mounted cooler, if you are going to do sustained hard pulling, but other than that, unless you are cranking ridiculous torque, it's a decent transmission.

 

Believe it or not, I let AAMCO Transmissions rebuild my A518 two years ago. After talking to the manager he understood how much torque I was making they put together what so far has been a good transmission. They actually stood behind their work when I fried the paint off the torque converter. But, it was a $3300 in house rebuild.