Not really on topic, but I've got the original Dearborne HD 3 spd in my 66.
Would like to replace it with a 4spd sooner or later- but the 455 build keeps taking all my extra car money at present, so it'll probably go back in when the new motor is ready ;-)

 

Someone else suggests it may be a Muncie 318. Is there a definitive answer, I wonder?

 

I remember that. There was a way to get around it. The insurance rule only applied to cars, but not trucks. So if you bought a truck you didn't get hammered with the 4 speed charge. That was the reason why some folks bought an El Camino. No kidding.

 

I'm going to be completely candid and say I could be off base. I just remember looking up info for the 318 for my C-10 and seeing a chart that said they were offered in Olds. Never seen one with my own eyes in an Olds.

 

Yes, there is a definitive answer. They are wrong! Olds did not use a muncie trans until 1964 and then only in the Cutlass. The 51-64 three speed was a Buick built transmission!

 

I'm not sure about 71, but in 67, s the 3 speed transmission had a FoMoCo case with GM gears.

 

If you'll read the posts you'll see this was already well answered. The '65-'69 transmission, gears and all, were all Ford, not GM with one exception. Only the input shaft was GM.

 

The use of the 3sp Trans started in '65 Cutlass and 442. Was a ford unit because it was the only Trans that was full syc . I guessing '68 was the last year for that. That Trans was listed as a heavy duty only because of the full syc shift

Gene

 

I have seen several case numbers out here on the Dearborn 3 speed, but have been unable to find any article information anywhere online on decoding case numbers, dates or differences in Buick, Olds, or Pontiac units. I have a unit with a tag that reads RAT E1, 028366, the extension housing has RF-C5FR-7A040-A, the main case has C8AR, 7006, and 7K30, the front bearing retainer has 03001 and H25B. Any help on figuring out what this came out of or where I can find info would be greatly appreciated.

 

Uh not true. In 1931 Olds 3spd. transmission was built by Muncie and my fathers '36 was a 3 spd. Muncie.

 

Ford unit.

 

That's what I like about this board: There is always someone who can give a definitive answer that includes information that most would consider obscure, but which you are happy to learn.

- Eric

 

When I was 5yrs. old my father came home with a 1938 Plymouth 4 dr. sedan, and my blood turned to oil and it was all down hill since. I just loved the automobile all my life. All American makes. I'm a vast cesspool of useless knowledge

 

When I was the same age my father brought home a 1938 K Lincoln that had been sitting in a field.
Ended up selling it a couple of years later (got it running and stopping, but with all the wood and leather, it's not a car a "regular guy" can restore), but it stuck with me.
Also, by the time I was 5, I was helping him swap motors in VWs and Porsches (I could get my hands where he couldn't).

And, yeah, I seem to kinda know a few useless things myself...

- Eric

 

Are you looking to sell this transmission?

 

I like posts like this but it started out in 2012 Good information but probably the parts are long gone by now.... Tedd