How are Ford 9 axles measured?

How to Measure Ford 9 Axles
To measure Ford 9 axles, you will need to consider the axle flanges and axle lengths. Here are the steps to measure Ford 9 axles:
1. Measure Axle Length: Measuring from the outside of the axle flange to the centerline of the pinion gear/nut will give you the correct axle length required. Note that most applications will usually have one axle longer than the other due to an offset center section, so make sure to measure both sides.
2. Confirm Symmetry: Measure from an identical reference point (such as a spot on the quarter panel) on both sides to ensure that both sides are perfectly symmetrical.
3. Measure Overall Length: Measure from the inside of the wheel on one side to the inside of the wheel on the other side. This will provide the overall length of the Ford 9 axle, including brakes, from inside-of-wheel to inside-of-wheel.
It’s important to note that aftermarket suppliers like Mark Williams Enterprises and Speedway Motors offer axle assembly kits and provide diagrams to help with rear end identification and axle measurement. These resources can be helpful if you need further guidance or specific instructions for your Ford 9 axle.
Remember to measure carefully and double-check your measurements before ordering or modifying any parts.

Is the Ford 9-inch a full floating axle?

It was introduced in 1957 model year cars and ended production in 1986, having been phased out in favor of the Ford 8.8 inch axle. However, aftermarket companies still produce the 9-inch design. It is a semi-floating drop-out axle and had a GAWR up to 3,600 lb (1,630 kg).

How do you identify a 9 inch diff?

Most 9″ rear differentials will be the open type. To recognize a locking or limited slip 9″ differential, look for a metal tag on one of the bolts that holds the center section to the housing. There is a gear ratio stamped on the tag. For example: The tag will say: 350 for 3.50:1 ring and pinion gear ratio.

How are axle lengths measured?

How you go about measuring an axle depends on the axle type. Axles with yokes (front axle shafts) are measured from the center of the u-joint bore to the end of the splines. Semi-float and C-clip-equipped axle shafts are measured from the end of the shaft to the outer edge of the mounting flange.

What is so special about a Ford 9-inch rear end?

One of the features which distinguishes this axle from other high-performance or heavy-duty domestic solid axles is that unlike other axle designs, access to the differential gears is not through the rear center cover; rather, in the Ford 9 inch, the rear cover is welded to the axle housing, and access to internals is …

How do you measure a Ford 9 inch axle?

And the seal. In. And what that’s going to do is that’s actually going to give us a measurement.

What does the 9-inch mean in 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 my Ford 9-inch rear axle?

And this lip right here is for to to house the larger bearing you can see the same lip on my 75. Right here with the 11 inch rear drum.

How wide is a stock Ford 9-inch rear end?

These axles are 65 inches wide from wheel mounting surface to wheel mounting surface (a 68-inch-wide E-series van version is also common), feature the legendary 9-inch diameter ring gear, large Timken set 20 axle bearings, semi-floating 28- or 31-spline axleshafts, drum brakes, and a 5-on-5.5 lug pattern.

How do you measure axle to axle length?

Use a tape measure. Hook the tape measure on the left edge of the top axle. Measure to the left edge of the bottom axle.

How wide is a Ford 9 inch axle?

The 9” rear axle was manufactured in seven different housing widths, from 57-1/4” to 69-1/4” wide, any of which may be ideal for a particular chassis. Determine housing width by measuring the distance between the axle flanges located on the outward end of each axle tube.