1982 727 transmission in a 1973 challenger

[swarthout]

Hello, I’m nearing the end of my project and need some expertise. I have a 1970 340 in my 1973 dodge challenger. The 727 automatic transmission that I received with the car had already been overhauled and rebuilt. I installed it, just assumed it was roughly the same year. I started to look at the linkage and noticed that it has no mounting holes for the gearshift torque shaft bracket. I ran the ID number 4058395 and found it’s from a
Dodge Tr 82-83 8-318 & 8-360 A727
DI50 D250 & D350 4X2 Long Extension. My question, will this work with my vehicle and how do I connect the floor shifter?

 

[pschlosser]

Are you saying your transmission is missing the bolt flange on the driver-side of the bellhousing, right on the starter motor hump?

looking for an image... edit: found one,

 

[Ricks72Chlgr440]

He's probably talking about the double holes under the tailshaft housing where the vertical bracket bolts on for the console shifter. Trucks did not have that. He can get a different tailshaft housing from another 727 to fix that.

 

[pschlosser]

He's probably talking about the double holes under the tailshaft housing where the vertical bracket bolts on for the console shifter. Trucks did not have that. He can get a different tailshaft housing from another 727 to fix that.

 

[swarthout]

He's probably talking about the double holes under the tailshaft housing where the vertical bracket bolts on for the console shifter. Trucks did not have that. He can get a different tailshaft housing from another 727 to fix that.

Yes! That’s exactly what I’m talking about. Ok, so a correct tail shaft housing which has those two holes and then I’m good to go.

 

[moparleo]

Another thing to consider is that 727 after 98 have lock-up torque converters and different input splines so torque convertor are not interchangeable.

 

[swarthout]

Another thing to consider is that 727 after 98 have lock-up torque converters and different input splines so torque convertor are not interchangeable.

Ok. Thank you for that, I did not know that either.

 

[swarthout]

Another thing to consider is that 727 after 98 have lock-up torque converters and different input splines so torque convertor are not interchangeable.

This is mine, looks like a lock up.

 

[Vaanth]

Hello, I’m nearing the end of my project and need some expertise. I have a 1970 340 in my 1973 dodge challenger. The 727 automatic transmission that I received with the car had already been overhauled and rebuilt. I installed it, just assumed it was roughly the same year. I started to look at the linkage and noticed that it has no mounting holes for the gearshift torque shaft bracket. I ran the ID number 4058395 and found it’s from a
Dodge Tr 82-83 8-318 & 8-360 A727
DI50 D250 & D350 4X2 Long Extension. My question, will this work with my vehicle and how do I connect the floor shifter?

Truck transmissions do not have the cast-in mounting tabs/holes for a floor shifter. A 727 transmission from a passenger car with the cast-in mounting tabs/holes can be substituted to allow use of a floor shifter like that shown in post #4 or in the following image:

This is mine, looks like a lock up.

View attachment 144267

The pictured transmission is not a lock-up transmission. The A727 Torqueflite with non-lockup converter input shaft has 24 splines. The 1978-1990 A727 Torqueflite with lockup converter input shaft has 23 splines plus a smooth machined area without splines at the nose of the shaft.

The following image shows a comparison of input shafts: