model B and 4 speed in a 28 Model A

[ed thibodeau]

I've got a 4 spd. in my pickup and 1st gear is great for parades. When on a tour we drive 45 to 50 and using 2nd thru 4th it handles those speeds very well with no problems.

[CarlG]

Originally Posted by Tom Wesenberg

I would rather go with the F-150 tranny kit. It should be a lot easier installation and require fewer changes to the brakes or crossmember, and it will give you a good overdrive.

That's what I have in my PU, with 3.78 rear end. Works and looks great. Did the installation myself with some help from "jfreddy" who just happens to live just down the street from me. I didn't have to change anything on the brakes or crossmember. No cutting or welding.

[1930artdeco]

Chris,

Sorry I had a brain fade and forgot they were both 1:1 in final drive.

Mike

[chiliman]

the f100 is the way to go the 26% is the best one if you can find one have the 37% in my four door works great found out the one I have for my pickup is a 41% grrr have a 411 to go in it winter project fenders are getting painted now have a blessed day

[32forddump]

My options are as follows. #1 I can put the 4 speed from the 32 BB along with the model b engine. #2 I can use this S - 10 tranny kit that I can buy for around $800.00 including rebuilt tranny and see if I can buy a adapter plate for the BB bell housing. #3 I can modify the oil pan so I can use the model A bell housing. And I guess there is a #4 I can find a f100 tranny and make that work. By the way what year f100 tranny are you using? Either way I am going to use the model b engine. Oh, so many choices????

[Jim/GA]

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The transmission you are looking for is out of an 84-87 Ford F150 2WD pickup with an inline 6 or small V8. It has a floor mounted shifter and the shift knob will have "OD" where the normal "4" would be in a normal "H" pattern 4 speed. Secondly, look at the left side of the transmission case. There should be a casting number "260XXXX". Third, on the right side of the transmission there should be a riveted metal tag with the first three letters "RTS" followed by two letters which will identify the OD ratio.

Here's what I have been given as the available F150 gear ratios, as well as what I believe to be the standard Model A ratios. The bold numbers are the unit I have in the Town Sedan with a 4.11 ring gear.

Gear __ A ___ B _____ C _____ D __ Model A
1 ____ 3.01 _ 3.25 _ 3.2508 _ 3.01 __ 3.12
2 ____ 1.78 _ 1.92 _ 1.9213 _ 1.78 __ 1.85
3 ____ 1.00 _ 1.00 _ 1.00 ___ 1.00 __ 1.0
OD __ 0.72 _ 0.71 _ 0.7837 __ 0.79 __ N/A
___ 39% _ 41% _ 28% _ 27%
Rev _ 3.01 __ 3.25 _ 3.25 ___ 3.01 ___ 3.12

Don't know how accurate that is, but it's what I have.

[Tom Wesenberg]

Is there any chance the 4 speed OD tranny from a 1987 Dodge 1/2 ton 2WD pickup with slant 6 would be the same tranny?

[32forddump]

Would that F - 150 tranny bolt up to the Model b engine ? I really want to use that engine in this project.

[32forddump]

I was thinking that with the extra power that the model b engine has over the model a engine I would not need to mess with the gears in the rear end. I will confirm the stock gears in the rear end this week and I should be getting the instructions from Indiana this week as well.

[32forddump]

Does the F - 150 tranny allow the torque tube to be utilized or do I need to manufacture a drive shaft?

[QGolden]

Originally Posted by 32forddump

Does the F - 150 tranny allow the torque tube to be utilized or do I need to manufacture a drive shaft?

Lots of material to study here.

http://www.fordbarn.com/forum/showth...5594&showall=1

http://www.jalopyjournal.com/forum/a...3&d=1231720611

[Bob C]

Here are some pictures of the F150 4-speed.

Bob

[32forddump]

Im betting the Model bb housing is the same size as the aa. I will check today.

[CarlG]

Originally Posted by Jim/TX/GA

The transmission you are looking for is out of an 84-87 Ford F150 2WD pickup with an inline 6 or small V8. It has a floor mounted shifter and the shift knob will have "OD" where the normal "4" would be in a normal "H" pattern 4 speed. Secondly, look at the left side of the transmission case. There should be a casting number "260XXXX". Third, on the right side of the transmission there should be a riveted metal tag with the first three letters "RTS" followed by two letters which will identify the OD ratio.

Here's what I have been given as the available F150 gear ratios, as well as what I believe to be the standard Model A ratios. The bold numbers are the unit I have in the Town Sedan with a 4.11 ring gear.

Gear __ A ___ B _____ C _____ D __ Model A
1 ____ 3.01 _ 3.25 _ 3.2508 _ 3.01 __ 3.12
2 ____ 1.78 _ 1.92 _ 1.9213 _ 1.78 __ 1.85
3 ____ 1.00 _ 1.00 _ 1.00 ___ 1.00 __ 1.0
OD __ 0.72 _ 0.71 _ 0.7837 __ 0.79 __ N/A
___ 39% _ 41% _ 28% _ 27%
Rev _ 3.01 __ 3.25 _ 3.25 ___ 3.01 ___ 3.12

Don't know how accurate that is, but it's what I have.

I have the same set-up in my PU (highlights # C), except I have the standard 3.78 rear end in mine.

Originally Posted by 32forddump

Does the F - 150 tranny allow the torque tube to be utilized or do I need to manufacture a drive shaft?

The torque tube, drive shaft, and radius rods had to be shortened a couple inches (all of which came in the kit I purchased). When installed, it looks like it was meant to be. The installed unit looks pretty much like Bob's pictures above in post # 32. I did paint mine green like the original.

[32forddump]

yes, the model BB bell housing is the same dimension as the AA. Excellent all I need is the tranny and a adapter plate. Shorten the driveshaft, torque tube and radius rods and I will be in good shape.

[Bob C]

Don't forget the work you need to do to the transmission.

Bob

[Chris Haynes]

Originally Posted by 32forddump

Im betting the Model bb housing is the same size as the aa. I will check today.

The housing may be the same. But the bellhousing is different and it has no provisions for the pedals. AA 4 speeds aren't that hard to find. I know a farmer in CA that has several in his spare parts pile.

[32forddump]

Yes, but I am using tha model b engine and the bb bell housing bolts right up.

[32forddump]

What if any changes need to be made to the f-15o tranny?

[Bob C]

The tail shaft needs to be removed and the output shaft shortened and splined
for a model a u-joint, a plate needs to be machined to retain the bearing and mount the u-joint housing, drill and tap the front of the transmission case for mounting
bolts, make and install a sleeve to mount on the front bearing retainer for the
throwout bearing.