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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 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.
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