Can U ID this ?

[customline]

I cut this automatic off of some engine that I wanted to be equipped with a manual transmission. It was many, many moons ago ?.  Can any of youz guys identify the below transmission for me? I just know one of youz does ! ?

[MeatMan]

The square pan limits the options of what it could be. It isn't the greatest of replicas but it it intended to be pretty much hidden under the car.
Its hard to tell because the bolt pattern isn't there, but the starter looks like its in the GM location.
Based on the square pan and the short tail shaft housing I think its a GM 700R4.

Edited May 24, 2024 by MeatMan

[customline]

Thanks, Dennis, I suspected it might be GM (but not Olds.) I tried looking at photos of them but no luck. I want to put it behind a 440. I hate it when the kit's optional engine has to share a transmission ?

[Mark]

Looks like a Hydra-Matic; if not from an Olds, it's from a Cadillac.

[customline]

28 minutes ago, Mark said:

Looks like a Hydra-Matic; if not from an Olds, it's from a Cadillac.

Would an olds starter be on the left side? I should go look at the one in the weeds behind the shed ?. Thanks, Mark.

[NOBLNG]

It looks like the one behind the Caddy engine in the Revell ‘49 Merc.

 

 

Edited May 24, 2024 by NOBLNG

[Mark]

Pretty sure Olds had the starter on the left (driver's) side in the Hydra-Matic days.  To install an Olds engine into an early Ford, the transmission adapter moved the starter to the other side.  So that transmission is for a Cadillac engine.

Pontiacs used Hydra-Matics in the Fifties also, but I don't know of any kit that includes a Poncho mill with a Hydro.

 

 

[customline]

17 minutes ago, Mark said:

Pretty sure Olds had the starter on the left (driver's) side in the Hydra-Matic days.  To install an Olds engine into an early Ford, the transmission adapter moved the starter to the other side.  So that transmission is for a Cadillac engine.

Pontiacs used Hydra-Matics in the Fifties also, but I don't know of any kit that includes a Poncho mill with a Hydro.

 

 

Good info, Mark, thanks. I recall putting a starter in a 330, 65 vintage. Easy job.

 

30 minutes ago, NOBLNG said:

It looks like the one behind the Caddy engine in the Revell ‘49 Merc.

 

 

You got it, Greg! Now I remember. I didn't think it proper for a lead sled to have a slush-o-matic. 

I don't think I should put it behind that Mopar engine. Oh well. Anybody got a torqueflite they can spare? ?

Edited May 24, 2024 by customline

[Ace-Garageguy]

The cast in support bands on the case and the square pan identify it as a '59-'64 "Jetaway 315", used in some Pontiac, Olds, Cadillac, Buick, Hudson, and American Motors products.

It's a 4-speed automatic, kinda like the Hydramatic B&M used for their "Hydro Stick" racing autoboxes, but different.

https://www.charlietranny.com/315Jet.htm

Edited May 24, 2024 by Ace-Garageguy

[Mark]

I wonder which AMC cars used this transmission.  I thought they used Borg-Warner automatics through '71, then used 727 Torqueflites built under license from Chrysler from '72 on.  Too, I'm pretty sure the AMC cars bigger than the American used a torque tube rear axle setup through '66 or so, which would mean the AMC version of this transmission would be somewhat different from the ones used by GM.

[Ace-Garageguy]

4 hours ago, Mark said:

I wonder which AMC cars used this transmission.  I thought they used Borg-Warner automatics through '71, then used 727 Torqueflites built under license from Chrysler from '72 on.  Too, I'm pretty sure the AMC cars bigger than the American used a torque tube rear axle setup through '66 or so, which would mean the AMC version of this transmission would be somewhat different from the ones used by GM.

Yes, in a torque-tube setup the tailshaft and housing would be different, but many gearboxes over the years were used in both open and closed driveline configurations.

Far as what American Motors products used it, known technically as a "controlled coupling Hydramatic" ("Jetaway" was a GM marketing name), according to the trans reference site I linked to, the basic design was built from '56 through '64...and WikiPee (which I never take as definitive) lists these cars as being equipped with GM Hydramatics (which are, of course, entirely different from Turbo-Hydros):

• 1950–1957 Nash
• 1951–1956 Nash Rambler
• 1957 Rambler
• 1958–1960 Rambler American (AT&T associated company fleet units only)...
• so basically, who knows whether a particular car had the earlier Hydramatic or this one? I've done all the searching I'm going to.

Edited May 24, 2024 by Ace-Garageguy

[Ace-Garageguy]

For what it's worth, my real '63 Olds Dynamic 88 convertible has another oddball and unloved GM slushbox, the "Roto Hydramatic" known also as the "Slim Jim". Parts used to be hard to find. Now they're probably impossible.

Unfortunately, because of its small size, the Olds tunnel won't accommodate a TH350 or 700R4 without sheetmetal work, and the later boxes won't bolt to an Olds 394 anyway.

I've always wanted a manual box in the car since I drove it in high-school, so whatever it takes to make that happen...

 

[customline]

Guys, I appreciate you all contributing. Greg nailed it. I found a manual transmission I could put behind a 440 for the Revell '68 Charger. Took it from the AMT '41 Plimit( the optional V8, whatever it is...lopped it right off and threw it in the Charger box, to be dealt with at a later date. Thank you all!

[NOBLNG]

14 minutes ago, customline said:

Guys, I appreciate you all contributing. Greg nailed it. I found a manual transmission I could put behind a 440 for the Revell '68 Charger. Took it from the AMT '41 Plimit( the optional V8, whatever it is...lopped it right off and threw it in the Charger box, to be dealt with at a later date. Thank you all!

Well Jim, Mark tipped me off to look at my Merc…I knew it had a Caddy engine. Don’t you need that engine and trans for your next ‘41 Plymouth build????

Edited May 24, 2024 by NOBLNG

[customline]

1 hour ago, NOBLNG said:

Well Jim, Mark tipped me off to look at my Merc…I knew it had a Caddy engine. Don’t you need that engine and trans for your next ‘41 Plymouth build????

BITE YOUR TONGUE ! !  I've got 2 of those monstrosities staring at me, beckoning, leering, "c'mon, Jimmy, I wanna be a cool street coupe".....

Edited May 25, 2024 by customline

[LennyB]

On 5/24/2024 at 9:00 PM, customline said:

BITE YOUR TONGUE ! !  I've got 2 of those monstrosities staring at me, beckoning, leering, "c'mon, Jimmy, I wanna be a cool street coupe".....

Oh, you are just dying to build a 41 gasser…….with a fiberglass nose.   ?‍♂️

[customline]

5 hours ago, LennyB said:

Oh, you are just dying to build a 41 gasser…….with a fiberglass nose.   ?‍♂️

Been there, done that, Lenny. One is enough. Nope. I might want to take another shot at a chopped kustom. Maybe sectioned....ooooo.....?