How do you identify a Ford 9-inch case?

Identifying a Ford 9-Inch Case
Identifying a Ford 9-inch case can be accomplished through several methods. Here are some key points to consider:
Using a Deep Socket as a Go-No-Go Gauge: One method of identifying a Ford 9-inch housing is by using a deep socket as a go-no-go gauge for the bottom two retaining nuts on the center section. If the socket fits, it is a Ford 8-inch housing. The 9-inch housing’s center section will not allow the socket to clear, and the two bottom retaining nuts must be removed with a boxed end wrench.
Hypoid Offset: The hypoid offset is another indicator, with the distance between the centerline of the pinion and the centerline of the ring gear being 2.25 inches for the Ford 9-inch and 1.5 inches for the 8.8-inch axle.
Identification Tag: If you are fortunate enough to find an axle with the identification tag still attached, it can help solve part of the mystery of what application the axle came from and what might still be inside.
Nodular Iron 9″ 3rd Member Cases: Nodular iron 9″ 3rd member cases may have an “N” stamped inside one of the reinforcement webs. Most, but not all, had a cast-in letter ‘N’ located on the outside of the case right above the pinion shaft.
Casting Numbers: The part number can be used to identify different cases. For example, C4AW cases are considered good ones, and the presence of an “N” on them is not the only indicator of a good case. Other casting numbers such as D0OW and C7AW are also mentioned.
Additional Considerations: The Ford 9-inch case is designed for maximum rigidity and strength, and it allows quick gear ratio changes to accommodate different tracks or updates to a vehicle’s horsepower and torque ratings. It is important to choose a high-quality case to avoid premature failure and other issues.
In summary, identifying a Ford 9-inch case involves considering various physical characteristics, identification tags, and casting numbers to determine the type and quality of the case.
I hope this information helps you in identifying a Ford 9-inch case for your specific needs! If you have any further questions or need additional assistance, feel free to ask.

What is the difference between Ford 9 inch diffs?

Ford 9-inch diffs feature larger diameter ring gears which creates additional distance between the centerline of the ring gear and the centerline of the pinion gear, known as hypoid distance. This relationship impacts performance. “The key here is hypoid offset,” says Gus, “The vertical offset from the axle centerline.

How do you identify a Ford 9 inch nodular case?

STRANGE PRO SERIES NODULAR IRON 9 INCH CASE
It can be identified by the stout horizontal and vertical ribs. As with all Strange engineering cases, “Strange” is embossed near the main cap area. Strange Engineering’s proprietary form of nodular iron is used, which is 8-10% stronger than typical nodular iron.

How do I know what model my Ford is?

You can find your vehicle’s specifications on the door jamb label, your window sticker, a Build Sheet, or a VIN Decode Letter.

How do I identify my Ford 9 inch?

When attempting to identify Ford 9 inch rear end specs, several indicators will help you. First, the Ford 9” has a third member bolted to the front of the axle housing and there is not a traditional rear housing cover as is found with many other rear ends. Ford 9” housings were also produced from 1957 through 1986.

How do I identify my Ford diff?

Whether. It needs an additive or not usually that’s on those tags also. As far as identifying Ford. Gives most of the Fords will have the same format. So your super duties your f-150 is your Mustangs.

How do you identify a Ford 9-inch rear end housing?

How Do I Identify a Ford 9-Inch Rear? Ford 9 inch rear end identification is easy and can be accomplished with nothing more than a deep socket as a “go-no-go” gauge for the bottom two retaining nuts on the center section. If the socket fits (as shown in our photo below) it is a Ford 8-inch housing.

How do you identify a Ford 9 inch rear end housing?

How Do I Identify a Ford 9-Inch Rear? Ford 9 inch rear end identification is easy and can be accomplished with nothing more than a deep socket as a “go-no-go” gauge for the bottom two retaining nuts on the center section. If the socket fits (as shown in our photo below) it is a Ford 8-inch housing.

What years is a Ford 9 inch rear end?

The Ford 9-inch rear end, so named because of its 9-inch ring gear diameter, was manufactured from 1957 to 1987 by the Ford Motor Company and installed in some intermediate and most full-size Ford, Lincoln, and Mercury passenger cars, F-Series ½-ton trucks, and Econoline vans.

How do I identify a Ford 9-inch rear end?

All the way out. Those are the two biggest ways that you can tell whether you have an eighth inch or a 9 inch housing.

How do I identify my Ford model?

You can find your vehicle’s specifications on the door jamb label, your window sticker, a Build Sheet, or a VIN Decode Letter.