I have a 1949 F-7 that I have not driven. It is a long term project and I am in the parts-gathering phase. My F-7 has the original transmission, a Clark 5 speed. I was initially excited when I found the transmission was the overdrive version. Then I figured out it has no synchronizers. I want something other than a 5 speed crash-box. Near me is a junkyard with several Clark and New Process 5 speed transmissions. I have no clue how to identify the model of these transmissions. I also don't know what transmission models will bolt in, what transmission models can be used with easy modifications, and what transmissions to avoid.

Can anyone help?

Thanks,
Fred

 

Fred,
You need to find a 5 over from a 1953 through 1960 something F-750-800. They are the only ones with 2 pin stripes along the lower edge, and around the front. The synchros were much improved in '56, so it's best to find one later than '55. You will need to shorten your drive shaft, but they just bolt in otherwise. Call me for details.
Chuck

 

What engine do you have, Fred?

 

I have on (5sp OD) in my F8 and there are sycros in 4th & 5th only (Clark).
And then my F9 a much later Clark 5 OD I think it came from a 1970s
International, that shifts like a dream...
All those VO Clark 5 & 5ODs are the same. While junkyard shopping bring yours and match it up and brind a tape measure.

 

I have the 337 flathead engine.

Doing the math on gear ratios, including the 5831 auxiliary transmission I have, I think a direct in 5th transmission would work for me.

Almost none of the transmissions in the yard near me have paint on the outside anymore. I expect this to get involved.

Thanks for the offer Chuck, I will try to give you a call during the week some time.

 

Otherwise known in the industry as No Progress Gear is now New Venture Gear. Here is good page that tells how to identify almost all manual transmissions.
http://www.crankshaftcoalition.com/w...identification

 

Petemcl, thanks for the link, but it doesn't show any medium or heavy duty transmissions.

 

OK . . . This may be too new but you might try calling these guys Domestic Truck Transmission Identification Guide - Rockland Standard Gear, Inc.

 

I have a 5sp that came out of a '59 Ford chassis bus (do not know what size chassis). Outwardly, it looks a lot like a NP435 (but it isn't). Does anyone know how to find out what transmission this is? Maybe where to find the casting numbers (I haven't had a chance to degrease it yet)? It has a parking brake mounted to the output shaft.

 

Pictures would help.

Otherwise here are a few sites that might help:

Don't forget to look at the heavy duty trans section.
Muncie Transmissions - Quality Gear - Car, Light Truck and Heavy Duty Automotive Parts

Complete, Turn-Key Transmission Packages for Jeeps

A useful automatic link:
Transmissions - Transmission Depot

 

I will post a few pics when I get it out of the trunk of the Crown Vic. Waiting on a friend to give me a hand.

 

B is the parts catalog symbol for school busses.

5 speeds offered in 1959 (3 & 4 speeds are on the previous page) =

 

You need to clean it, and find the numbers on it. There is a very good chance that the yellow painted letters and numbers will still be visible, so make sure you don't scrub them off. Knowing if it came from a medium duty vs. heavy duty is important, as they are a lot different. Pictures, after it's clean, will help.
If it was in a B series chassis, chances are it's medium duty, and 5th gear is direct.
Chuck

 

Thanks Bill, that is what I was hoping to see!

 

I am sending pics from my phone to my e-mail now, I will post them when it is done (I am in a low reception area so it may be a while). In the meantime, I took the tranny to Northside Ford Truck and the Parts manager took a look at it. The only numbers we could find were "207794" and under that "ELAA". Unfortunately, all he could tell me is that it is a Clark, and nothing more. Also, these numbers do not correspond to anything on the list Bill posted for me either.