Transmission Code for you guys that decode them PLEASE!!!

OK The Numbers that are cast in the side of the tranny as far as I can see and tell are....RF-D8BR-7006-AB, C-2603833 7/19/78

The Numbers on the tranny tag are

RUG CW JJ4
D9 BR FA 0321

What I know is that it is a 4 speed with a little short shifter.

From what I have tried to look up on the internet it appears to be a 4 speed toploader (thus tthe RUG) and from what I can tell it was probably out of a 78 or 79 fairmont????

Can anyone decode this mess for me a tell me exactly what tranny this is??

I know some of you guys on her know how to decode this stuff almost off the top of your heads..

Any further information would be greatly appreciated...

I am seriously looking into having the tranny rebuilt and having a Hurst shifter installed and I really would like to know if it is a wide ratio, or close ratio, I want to know for 100% sure that it is a toploader and what it came out of so I can know what kind of shifter I need to buy.

Thanks in advance

 

Did you look here?:
http://www.mustangtek.com/toploader/toploader.html
(oh wait, I don't see it listed)
I don't see "CW" here either??
http://www.5speeds.com/toploader.html#tag

 

The other thing I am finding Odd is there is NO external Shifting linkage... There is something that looks like a pipe or metal tube that goes from the shifter to the back of the tranny and that is it. I don't see any shifting linkage... BUT the shifter definetly does not go straight into the top of the tranny, the shifter is bolted to the side of the tail shaft and has it's own ford part number. Could this be a cable shifter???
The Part # on the shifter is...
RF D8BR 7F306-BB
C-2604105

If anyone knows the answer to this please quit laughing.. I know zero, zip, zilch about transmissions...

 

Yeah that is that problem I was running into.. I don't see the CW listed but I did find this http://www.broncodata.com/reference/partnumber.htm

It lists the D as being 70's decade and 8 as indicating the 8 year or 1978 as the year and the third letter, B as Bronco, 1970-73; Maverick 1975-77; Fairmont 1978-83 and fourth letter R as Transmission and Axle Engineering; Powertrain and Chassis Product Engineering (Manual Transmissions)

Since the date code and the date stamped on the tranny is 1978 and the only car listed that fits that year and possibly has a 4 speed manual tranny is the Fairmont I an concluding that it is a 4 speed toploader out of a 1978 or 1979 (judging by the fact that it was manufactured in the 7th month) Fairmont. But that is about as much as I can conclude and I am not positive that i am correct in my assumtions

 

Is it a three speed toploader +1 (overdrive)?
Does it have a steel cover on the top of the main case?
I have never seen a toploader with an integral shifter tube on the case.

 

I don't know if it is a 3 plus 1 or not. I asked the tranny guy and he wasn't sure either he said to tell for sure he would have to at the very least put it up on the lift and probably pull it out and check the gears.

Here is what I do know. The car has a 3.00:1 ratio rear and a 302 engine and it is taching about 2200 in 3rd gear at 55mph and around 1700-1800 in 4th at 55mph.

I am now 99% sure it is a toploader because #1 the guy I bought the car from told me that is what it is and he seemed pretty honest, #2 I got under the car and looked at it really good and there is no side plate on the tranny AND the RUG code on the tranny tag indicated a 4 speed toploader. but I could NOT find a decoder that has the RUG code with the CW suffix, I can find RUG-C and C1 and C2 but not CW

 

Also I have no Idea if it has a steel cover or not. The tranny is in the car and I have never had it out. That is why I am asking these questions. So I will have an Idea before i take the car and tranny to the shop to have it overhauled and have a shifter installed.

 

I'm thinking newer 4 speed O/D maybe outa mustang II. But if you wait I'm sure DaMadman will have more answers! He's been the strongest one here!!!

I'm sorry,,, had to say that!

 

OK I just found something that told me pretty conclusively that is is a
3 speed OD tranny

My tranny DOES have this buldge in the case on the passenger side....

http://www.davidkeetoploaders.com/imposters.htm

http://www.davidkeetoploaders.com/images/TL-OD5.jpg

So I guess it is NOT a "TRUE" toploader. I gues it is an Imposter... LOL... I personally like the gearing in it because it is quick 1st - 3rd and fourth is giving me some pretty good gas mileage. But now I am not sure if it is going to hold up after reading what I have read about the 3 + 1 Trannies being weaker than a real 4 speed toploader... I also don't know what I would do about a shifter for the damn thing now either. I am going to guess that a regular 4 speed top loader shifter and install kit won't work on the Overdrive tranny... does anyone know about that???

 

If there is anyone else on the forum that can confirm what it looks like I have found so far it would be greatly appreciated.

Any information that anyone can decipher from the codes and Tag numbers from this tranny would still help a great deal in my decision to have it overhauled or maybe even replace it with a "real" toploader if it indeed is NOT a real toploader.

 

http://static.summitracing.com/global/images/instructions/transmission%20id%20chart%203916848.pdf

Did find this on Summit,, if it dont work, go to hurst shifters comp plus, hit the tranny id's under the shifter description. You may have to call Hurst to see if they have want you want. I would bypass summit for that info. Good Luck

 

sounds like a SROD

 

x2 they used them in mustangs and fairmonts has the same bolt pattern as a toploader but still weak

brad

 

does it look like this

 

this is a mustang II srod 4 speed