Rear Diff I.D.
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Rear Diff I.D.
I decided to keep my 56 F-350 Firetruck and turn it into a rampback car hauler for my 62 Chevy II. Problem is... It goes about 52 MPH at 3500 RPM. The VIN says the rear is 5.14:1 rear ratio. With 13000 original miles, I would love to save this rear and regear it.
How do I identifiy this rear end
Thank you!!!
Tim
How do I identifiy this rear end
Thank you!!!
Tim
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Joined: Oct 2003
Posts: 275
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From: OKC, Ok
The best way to get a better gear ratio is get a later model one ton axle, Better gear set PLUS way more common eight lug hubs and wheels. I scored two axles, one is a '75 and the other is a '81. Either one is a bolt in. I also scored the front hubs, brakes and spindles for both my rear axles. I intend to put these on the '54 front axle. Makes the brake systems match as well as getting the wheels the same. Tom
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I realize that a later model axle would be the way to go, but I want to reasearch the old one to try to keep the brake systems and driveshafts easier to hook up.
I found a tag on the passenger side rear of the housing.
Model is B 100 NX.
Ratio 5.143:1
Serial # is pretty illegible
On the left of the tag is a black triangle with a large "T" in the middle with a smaller "D" on the left of the "T" and a smaller "A" on the right of the "T", and a smaller yet "CO" below the "T".
Any help??
Tim
I found a tag on the passenger side rear of the housing.
Model is B 100 NX.
Ratio 5.143:1
Serial # is pretty illegible
On the left of the tag is a black triangle with a large "T" in the middle with a smaller "D" on the left of the "T" and a smaller "A" on the right of the "T", and a smaller yet "CO" below the "T".
Any help??
Tim
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
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From: Simi Valley, CA
I found a tag on the passenger side rear of the housing.
Model is B 100 NX.
Ratio 5.143:1
Serial # is pretty illegible
On the left of the tag is a black triangle with a large "T" in the middle with a smaller "D" on the left of the "T" and a smaller "A" on the right of the "T", and a smaller yet "CO" below the "T".Any help??Tim
Model is B 100 NX.
Ratio 5.143:1
Serial # is pretty illegible
On the left of the tag is a black triangle with a large "T" in the middle with a smaller "D" on the left of the "T" and a smaller "A" on the right of the "T", and a smaller yet "CO" below the "T".Any help??Tim
TIMKEN Model B 100 NX - A1534 / 7,200 lb. Rear Axle Capacity.
Three ratios were offered: 4.86-1 / 5.14-1 / 5.83-1.
Applications: 1956 F350 // 1957/58 F350; P350/400 // P Series: Parcel Delivery // 1957/58: This info is from the 1957/63 Ford Truck Parts Catalog.
1948/56 Ford Truck Parts Catalog / Volume I-Text ~ Rear Axle Parts List # 77 // Volume II-Illustrations ~ Illustrated on page 93.
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Originally Posted by mechmagcn
On an F350, it should be a Dana 70...
