I have a 1957 F800, I am at my wits end in trying to figure out what transmission and rear end I have. I have attached pictures to see if anyone can help. I have researched, but come up with nothing!! I am trying to find out if I have a two speed rear end, and identify the transmission. I would like to find a parking brake for it if possible. Thanks for any help with this!! 45 mph is just a little too slow for me, and I know back then, that was flying!!!
Shifter looks like a cable for the dog was on the front.

Rear end

Rear end

Number on the front of the rear end

Number on the side of the rear end

VIN Plate

Numbers on the transmission

Numbers on the transmission

Numbers on the transmission

 

The cable seen on the shifter picture is not related!

 

Your transmission ID plate shows Dana model 4652 with the Spicer name showing also:

https://cimg5.ibsrv.net/gimg/www.for...e565ad17b.jpeg

The '57-'63 Master Parts Catalog shows:

Spicer model 4652 five speed direct transmission.

It shows only for model years '57-'59,

The codes used (which I can't see on your warranty tag pic--might not be there for '57) are:
L, M, and Y ('57 only)

These folks list that transmission. I have no idea beyond what you see in this link:
https://tdtsupply.com/spicertransmis...ion-parts.html

The rear axle appears to be a single speed. There is no two speed shifter nor does there appear to be provisions for one. I think the ratio shows on your plate as 7.17.

Eaton axle has all kinds of PDF files on line for various axles so you might get lucky searching. I didn't find anything under 41588.

Let me go back to your prior posts where I went over this before and I'll get back to you here later.

 

Thanks for the reply. Do you have any suggestion for a “sweet spot” gear ratio, to get a few more MPH top end, while not compromising the low end takeoff?

 

if you can find out your axle spline count and axle diameter ,you could try and find a differential with a better gear ratio .at what rpm dose your engine make peak power ,and at what MPH do you need to drive it at ? what is your tire diameter ? you can use a formula to find a gear ratio that works for you .then search the internet for a rear diff that fits your needs

 

Have you checked the housing, either the front driver side or back of the passenger side?

How do I identify my Eaton rear axle?
The complete axle is identified by the specification number stamped on the rear right-hand side of the axle housing. This number identifies all component parts of the axle as built by Eaton, including special OEM requirements such as yoke or flange. This tag only identifies the housing.

There are still outfits that have the parts for these. But despite the numbers you have posted, nothing comes up.

There were two speed axles for these, 6.50/8.87, 5.57/7.60 and others. With an axle change you need to get the right capacity as well as the Dayton wheel hubs etc.

You could try another avenue to lower cruise RPMs and that is an auxiliary transmission. These were common in trucks this size and were regular production option for them.

Info on one model:
http://photos.justoldtrucks.com/gs/h...28711&dt=3&g=2

5831-b, c, d were listed as well.

If you think you might want to go that way I can post some more or just search out "spicer auxiliary transmission".

 

Post a pic of the back of the axle housing and also the axle end where the tires mount
I,m not familiar with the smaller single speed axles but that large nut and screw on the side of the 3rd member makes me thing it may be a Rockwell axle

 

Says Eaton on it. See OP pics.........

 

I don’t see it

 

Below the pinion here, you can barely make out the Eaton logo:
https://cimg1.ibsrv.net/gimg/www.for...f0dfbfaf3.jpeg

Closer--looks like Eaton:
https://cimg2.ibsrv.net/gimg/www.for...5f00ab82d.jpeg

IF that's an Eaton logo.

I looked at Rockwell images and they usually have a tag on the housing, although those are fragile.

Your post 7 is the best idea.