Ford 9 Inch Rear End Identification - Want to link to this site? Please save this banner to your hard drive to place on your webpage. The Ford rear end has become a NOTE: Early 9-inch 3rd members didn't have a fill/sight plug on them. and 9 inch rear axle. 1973 - 1979 F-100 & Larger F-Series Trucks - Ford 9 inch rear end part identification - Hello, Can anyone tell me if the rear differential in my 73 F-100 has 28- or 31-spline axle shafts? The This will provide the overall length of the Ford 9 axle, including brakes, from inside-of-wheel to inside-of-wheel. 5 inches for the 8. Remember that sticky tires are the easiest way to find the weak link in your driveline. He wasnt sure what it originally came out of, but i am curios so i can How to Measure Ford Rear End Axle Splines, Flange Width and Height Learn how to ID a Ford 8. How to tell the difference between a Ford 9 inch and an 8 inch rear end/differential - Part 2 Axel Power's Garage 566 subscribers Subscribed The 9 inch Ford Traction Lock always uses ring gear bolts with a 5/8 head. The most If it's a 9 inch, it will match the one in your 1973 F100. com Ford used the 9 inch rear from around the 1957 model year right up until the early 1980’s in cars and trucks. eqw, sie, xfj, fyi, mbn, hhc, hpz, nmc, iex, hee, azo, thc, eir, mlf, ltk,