Is the output shaft lengh the same on both the 6 cyl and 8 cyl trannys ??
I allways asumed they were but need to know for sure

 

There are 3 different output shaft lengths and corresponding adaptors for the 6 cyl, RAT and the RAN. I don't have the lengths handy but I can post them if you need.

Jason

 

1966/69: C3UZ-7061-E .. Output Shaft / RAN = 13 9/16" long / 32-37-28 spline teeth

1966/69: D0TZ-7061-A .. Output Shaft / RAT = 16 9/32" long / 32-37-28 spline teeth

1969/77: D0TZ-7061-C .. Output Shaft / RAT = 16 9/16" long / 32-37-28 spline teeth

1970/74: C5UZ-7061-A .. Output Shaft / RAN = 13 9/16" long / 32-37-28 spline teeth

Info source: 1965/72 & 1973/79 Ford Passenger Car Parts Catalogs (where Bronco's are listed thru 1979 / After 1979, Bronco's are listed in the Ford Light Truck Parts Catalogs).

 

That doesn't make sense to me. The length of the shaft from the rear of the case to the end of the shaft is only a 1/2" difference between the RAT and RAN. According to your parts info, it sounds like they are referring the RAN as the 6 cyl transmission. I've never seen a 6 transmission marked as anything but a HEF.

Jason

 

According to the 1965/72 & 1973/79 Ford passenger car parts catalogs...section 70, page 7 & (73/39) section 70, page 3 - transmission application chart, the only year Bronco that used an HEF trans was 1966.

I'm not making this stuff up..and my parts catalogs are the real McCoy..same ones the dealers used, and not some off the shelf publication.

I'm the real McCoy, too. I spent 35 years as a Ford partsman/manager.

I listed the refs, you can buy scanned copies of the Ford parts catalogs on a CD from hipoparts.com.

1965/72 Ford Passenger Car Parts Catalog = 6 cylinder Bronco Transmission ID.

1966 = HEF-DA

1967/69 = RAN-N, N1

1970 = RAN-N2, N3, N4

1971 = RAN-N3, N4

1972: 170 = RAN-CF (before serial # P80,001) / 170/200 = RAN-CF1 (after serial # P80,001)

1973/79 Ford Passenger Car Parts Catalog = 6 cylinder Bronco Transmission ID.

1973/74: 200 = RAN-CF1, CF2

That's a heck of a lot of RAN transmissions, wouldn't you say?

 

I don't have as much experience in years as you do, but I've built and parted out literally 100's of these Bronco 3 speeds (and other truck transmissions and transfer cases). So that is what I'm drawing my experience from.

Jason

 

As you prolly know, all the HEF, RAN and RAT's are 3.03 all syncro transmissions. All three are listed in the same parts catalog parts list (70.4).

You prolly know far more about early Bronco's than I do.

We didn't see too many of the early model Bronco's in the Los Angeles area, and only ONE dealer in SoCal carried a decent parts inventory back then for the 66/77's = Ken Roggy Ford in La Puente. There's still a dealer there today, but the name has changed to Ed Butts (!) Ford. Mebbe I should stop by sometime and see if there's anything left. The dealer is 15 minutes away from where I live.

 

Hope I didnt miss an answer to this question already!

Ford had a model 2.02 transmission as well and I thought it was behind the (some?) 6's. Also there was a "Dagenham" 4 speed that was a low powered "howler" (made noise).

Was the 2.02 ever used in the bronco? Was not aware (until this site) that the 3.03 had different ratios.

Also seem to remember some trivia that the very early GTO's (other GM as well) used the 3.03 as the base tranny for its performance engines.

 

Bronco 3 speeds were always of the 3.03 variety. I'm not sure about the rest of the Ford line, but there were 2 different ratios available for the Bronco depending on being a 6 or V8 equipped. Maybe NumberDummy can shed some light on other ratios available.

Jason

 

RCrawler. as allways your knowlege is more than appriciated.
Happy frigen hollidays!
Ed Y

 

I believe you're thinking of the Ford 2.77 transmission. This was used on 144/170 (and some 200) equipped Falcons/Fairlanes/Mustangs and their Mercury counterparts from 1960 thru 1967. The 2.77's were not used in Bronco 170's. The 2.77 is a weak sister at best. It would not have held up to the Bronco's off road manners.

The Dagenham 4 speed had a distinctive reverse whine. Typical of English built transmissions used in Jags, Austin Healeys and etc. The Dagenham 4 speed (so called because that's the site of the FoMoCo UK factory), were used in 1962/65 Falcons and Mustangs with 170 I-6's and some Econolines with the 170 I-6 from 1962/67.

The Dagenham 4 speed is not the same transmission as the English 4 speed used in Pinto's and Mustang II's with the 2.3 liter 4 banger engine.

The 2.8 V6 engines installed in these cars used the German 4 speed, originally installed in Mercury Capris. Capri's used two V6's, the 2.6 and later 2.8. The same 2.8 V6 found its way into Bronco II's and Rangers. I call these the "Axis Powers" models. German V6 engine (built by Fords factory in Cologne, Germany), Japanese Toyo Kogyo (Mazda), or Mitsubishi manual transmissions.

Mitsubishi made a famous airplane once: the Japanese fighter plane known as the Zero.

 

Tx NumberDummy---Dont know why I keep thinking of a 2.02. Its somewhere back in the fog. Same as the 3.03, the distance between the mainshaft and the cluster shaft. Guess there was no 2.02. BTW, love the 63 & 64 galaxie's . Had a shot at buying a "lightweight" 63 years ago---minus the HR427. This thread covers a lot on the old 3 speeds.

One more thing, hope this isnt too far off topic for the thread. Got any info on the old 3 speed OD trannys ~1965?

 

Since you guys are Jawing about old trannies, any experience with the mid 50's 3spd w/od that was in the t-birds? I have one sitting in the shop I was considering dropping in the 65 F-100. Are they any good?

 

You betcha, it's a damn fine transmission...the only problem with it ..is finding the correct O/D: relay / kickdown switch / cable to work in a pickup.

The Big Dummy has one a these Borg-Warner T-85N O/D's in the 65 listed below.

Around town the O/D is useless, and shouldn't be used because it limits engine braking, but on the highway, your gas mileage will increase by 30-50% when in O/D. On a Route 66 Rod Run from Seligman AZ to Topock AZ. Average speed 45 MPH equaled = 28.7 MPG. Not too shabby for a 390 4V!

 

Sounds like it should go to the top of my todo list. Right now the 352 nets me about 13mpg. I'd be happy with 15