Help me Identify a Ford transmission

My grandfather died about 10 years ago. He was rebuilding a 1957 Austin Healey 100-6. He removed the original inline 6 cylinder and installed a Ford Small bock v8 289 from a 1969 Falcon (i think). I believe the transmission is also from the same Falcon, but still not sure.

What I do know is that the transmission is a 3 speed manual with an electronic overdrive. I have attached a few pics. Can anyone identify this trans from the numbers on the side?

I want to get a 4 speed manual. At about 50 mph the engine is around 3000 rpms with the overdrive on. This makes it hard to drive at freeway speeds (65mph) in the summer because at 3500 rpms the engine gets hot (it has a small radiator). Another gear would be great.

I am getting confused when searching for an aftermaket 4 speed trans. I have checked Summit Racing and Jegs and PAW but I need to make sure the trans I buy will connect to the engine/bell housing.

 

Will a new transmission like this bolt up to the existing bellhousing?

If not, where would I find a bellhousing that would adapt an old 289 V8 to a newer off the shelf trans?

 

Just out of curiosity, do you know what the rear gear ratio is? Maybe you can just swap some 3:08's in it to drop the highway rpm's. Also that looks like a really long tailshaft, how long is your driveshaft? You could swap a 85-93 Mustang t-5 5 speed in there, with a mustang bell and 28oz balance flywheel. You would need to get another driveshaft made up though. Its looks like you have a clutch cable setup so a t-5 should be easily adapted to it.

 

The drive shaft is only about a foot. The rear end is the orig Austin Healey. Im gonna have to research the gear ratio.

It has the orig clutch assembly (master & slave cylinder), but I should be able to relocate the slave. We have done a lot of fabrication to get the V8 in there.

 

Didn't realize it was a hydraulic setup. T-5's are a cable setup. That really would be a great swap for that car. I would look into the rear gears though that may be the way to go.

 

Actually the more I think about it that is a really neat little car u have. The t-5 setup with a '03-'04 cobra rear independent suspension setup would be awesome. But so would a injected aluminum headed 5.0 setup with a t-56 6 speed and the irs. That car has endless possibilities with the ford smallblock setup. Also have you thought about a aluminum radiator setup, that rad. looks pretty close in size to a 65-66 mustang rad which are available in aluminum 3 cores. The 289 running at 3500 is gonna be hard on it, maybe gears and aluminum radiator could solve your problems for now. We'll talk about the supercharged 4valve modular setup later-LOL.