All the Galaxies I have seen from throughout the 1960s How To Identify 9 Inch Ford Housings Chart via Speedway Motors. Learn how to hook up a 1-wire alternator on your vehicle. The bottom line begins with the ratio being the first set of numbers. The best gear ratio for a GM 10 bolt is 10,41 because it is the only ratio that allows your engine to turn 10,41 times per minute. Its called a 9 inch because the ring gear measures 9 inches. When you buy through our links, we may get a commission. common carrier housing found is the C7AW-E. Read this first! If you are looking for an N case or think that you have found one of these desirable axles, make certain to examine it closely. by the size of the nuts and thread used to retain the brake backing plates Some axle shafts can be shortened and a new spline machined in place. for the 1971-1973 Mustangs - cars with 351 engines and up receiving the 9-inch Again, the overall first-gear ratio with the TH400 and 4.10:1 rear gear would be 10.168:1. Along with the many different brake and wheel end varieties, many different styles of axle shaft ends were manufactured. weakest and had abrupt ending but welded carrier centers to tubes and a Generally, aftermarket shafts have to be purchased 56" The BOM will identify the model number, the gear ratio, the type of differential, and all component parts. You will need to look at the Ford axle code chart to replace your Ford rear-end axle parts. In order to allow for the additional straddle mounted bearing and casting support structure, the hypoid offset needs to be large enough to clear the differential case. These axles even have a unique bolt pattern of five on 5 inches. I reference these axles based on the ring gear nominal outside diameter in inches. Spring perches must be cut and re-welded in order The entire S550 Mustang generation has had 4, due in part to the limited-slip differential option. All of the 8-inch case nuts can be accessed with a socket. mind as mentioned, the Fairlane spring perch distances were not the same at car swap meets and shows are the units pulled from trucks with the With their high-volume production, the two biggest quality problems were leaks from poor welds and poor alignment of the housings. Mustangs and Fairlanes. Note that most, but not all, applications will usually have one axle longer than the other due to an offset center section, so don't just measure one side and assume the other is the same. Aftermarket vendors are actually re-casting these cases in very strong nodular iron, so more often than not it is easiest just to purchase a new case. This video is a good example of what goes into the process . How to Narrow a 9 Inch Ford Rear End. If the case has two verticle RIBS ,from top to One exception to this was The The narrowest production 9-inch axle is 56.375 inches. Ford Axle code identification, Read more: Front Axle Of A Car: Types, Functions, And Replacement. larger wheel bearing housings. Notice that the date code is C9UA with the ring gear size of 8.7. features the legendary Ford 9-inch ring and pinion strength, 5-on-5.5 lug The magnesium addition causes the grain structure to change from flakes to nodules and thus the name nodular iron. While we do offer cut-to-fit axles, you still need to ensure you have the proper measurements to be within the cut-to-fit area of the axle's splines. Since these housings were a series of stamped-steel pieces all welded together, there were many different overall lengths, tubes sections, mounting brackets, and even general constructions over the years (see Chapter 5). 66-71 Fairlanes, Torinos, Montegos, Comets, and other Ford intermediates with big blocks. One exception to this was There are several reasons for this. We stand behind our products with some of the smartest technicians in the industry. can easily tell this is a 9-inch from the hump in the rear and (2) The image below shows the Safety Label of a Ford Truck. The Lincoln Continental style of disc brakes use 11-inch rotors. The Ford 8.8-inch axle has the same ring gear mounting distance (see Chapter 7) for all ratios, just like the 9-inch. In this video I break down in great detail the speed at which your car will be going for every 500 engine RPM with each typical rear gear ratio for each gear of the transmission and then reverse it to show engine RPM for every 10mph and each transmission gear. Some of the 9-inch truck differentials will have an exaggerated hump on the rear cover to . The Ford 8.8 is an automotive axle manufactured by Ford Motor Company at the Sterling Axle Plant in Sterling Heights, MI.It was first used in model year 1983 Ford trucks. middle of case it is a good IRON type IF in the very center of this case The 9-inch housings center section will not allow the socket to clear, and you must remove the two bottom retaining nuts with a boxed end wrench. Both standard and W-series cases are made out of gray cast iron. First, you need to understand some fundamentals of the Ford axles to help guide your quest. Anyone know? It's uncertain if this E The instructions below will walk you through the steps. The Ford 9-inch can be found under 1974-1986 F-150s and 1978-1986 Broncos. Fords small block and big block engine families have their share of flexplate differences. Exceptions to this were the ultra Hi performance Boss 302s, Front Axle Codes While the parts catalog says "The third digit of the axle code identifies the ratio and/or capacity of the front axle", that is not true.As seen below, there are only 4 codes (2 - 5) and they do not define the axle ratio nor capacity.In fact, to find the front axle ratio you need the codes off the axle itself, as shown here: But it will also use more fuel in all situations because the engine's rpm will be higher. Calculators. the axle from around the 1957 model year right up until the early 1980s wheel drives) right up until about 1982, these housings are by far the mind as mentioned, the Fairlane spring perch distances were not the same People have been climbing around scrap yards for years to find the best examples of the 9-inch axle. A strong 9" with a nodular diff and 31 spline axles is fairly comparable in strength to a stock Dana 60 rear end. 8. larger wheel bearing housings. We offer a guide to follow when selecting a new set of brake pads for your race or street car. The axle model codes are interchangeable, typically the suffixes are different for a revision change but the axle is still interchangeable with one having the previous suffix. The additional straddle mount pocket bearing provides additional support to the pinion head during high-torque events. You can do this by multiplying by the gear ratio. The Ford version uses larger axle shafts and different lube flow strategy. This not easily accomplished with integral carrier axles, like the GM 10- and 12-bolt. The Ford chart below contains a general decoder system for Ford pickup from the 1980s till the 1990s. This larger offset (hypoid distance) between ring-gear and pinion-gear centerlines is the key reason the Ford is inherently strongerbut also why its slightly less efficient. Use this information at your own risk. applications due to the demise of most performance engine options in the It is the one most commonly narrowed rear ends due to the added strength in the middle. The Ford 9 inch rear end is one of the most popular axles in automotive history. Talk to the experts. I had an early '70's Lincoln with a 460 come into the shop one time and it had the 2.33:1 ratio in a 9 inch. 70's. Most of A simple formula to calculate Gear Ratio or Axle Ratios. large-bearing semi-floating axles, and many can be found with hefty 31-spline some 302 4V cars with optional gear ratios). The ring and pinion are then accessed, also from the front, by removing another 10 bolts. This particular pinion cartridge is well reinforced and much stronger than the stock production cartridge. also received the larger axle bearings housings. 76-77 large bearing. You This complex fixturing and welding process, coupled with fuel economy concerns, is what eventually led to their production demise. 54" Fords 9 inch rear axle was produced from 1957 through 1986 and was installed in nearly every Ford passenger car and truck at one time or another. (It was later used for pick-ups and Broncos.) There are also unique domestic special-option tags, which dont follow the format. But the 9" is better in a couple respects: It's much lighter than a Dana 60. With 568 Ford 9 Inch Parts for sale, you're sure to find the ideal parts . Nine Inch Rear Axle. but the link i was refering to listed codes by year and model. Most of the later trucks Theres an easy way to tell an 8-inch apart from a 9-inch. 9-inch complete rear axle is approximately 35 pounds heavier than an 8.8 rear axle with approximately the same components. The last one i got was marked "Mustang Posi" on the rear of the differntial by the people at the yard who dissembled the car. The larger offset is better for strength and noise but worse for sliding and efficiency. for 1965-1966 (the same width as 1964-1965 Falcons and 1962-1965 Fairlanes 4.09 Front, 4.11 Rear Ratio Differential Ring and Pinon Front and Rear Complete Kit for 8.5 Front (Inch), 9 Rear (Inch) (10 Front, Dropout Rear) . Come join the discussion about popular models such as the Mustang, Galaxie, Falcon, Fairlane, Torino, Shelby and many more! I have spent countless hours over the years collecting, reading, and studying old shop manuals, supplier reference documents, SAE papers, and even vehicle manufacturer reports and notes. The aftermarket has responded to this by offering a plethora of ratios ranging from 2.91 to 6.50:1. medianet_width = "300"; Call 800.979.0122, 7am-10pm, everyday. Like the H in our case shows a car with a limited-slip differential. Find the word AXLE under the bar code. Johns Industries Nodular Iron Assembly N1905JI $1728.00 With Open (New Gear) With Full Light Weight Spool $1409 With Trac-loc $1770 With Truetrac $1974 This third member comes with: A new, U.S.A. made John's nodular iron 9 inch case Case one pound lighter than the original Ford case Rated for up to 750hp A new U.S.A made John's billet aluminum pinion support A new forged pinion yoke of your . The later With so many better performing aftermarket options today, there is no reason to use these marginal brakes. Both axles share a common design and are often referred to as banjo style or third-member style. Richmond Tech Support. You must confirm the flange version to be able to order the correct drum brake backing plates, disc brake conversion kit, or even the axles bearing retainer. for the 1971-1973 Mustangs - cars with 351 engines and up receiving the 9-inch There were many instances of cuts and scratches from the thin steel tags sticking up on the axles. So dont be surprised that most of these axles leak from the welds. The most We provide how-to and technical articles, vehicle and build features and examples, plus calculators and lookups that will help you get your ride from dream to driver. replaced, and that is why it remained in use for so long. It was also used in the 1983-1996 full-size Bronco, and E150 Econoline . Because of the long production history of this axle, many variants are available. Many racers carry an extra carrier assembly for their 9 inch third member with a different rear end ratio so they can try different combinations on the same day while at the track. C-6, three-speed, automatic. by Ford exist in the size of the outer axle bearings in the housings and The "rough" This combined with easy assembly makes it popular for fine-tuning a rear gear for any particular application. These labels have a specific code that is similar to the axle code on the 9-inch axles. The certification plate can be located on the lock face of the left door edge. of torque to the pinion gear and the gear ratio of the ring-and-pinion is say 4.12:1, the output torque is 412 ft./lbs. are you wanting the listing for the ratio tags? Axle Ratio = (RPM X Tire Size)/ (Speed (MPH) X 336) Example 4.88 = (2881 X 37)/ (65 X 336) The Filed Under: Ford Tech Tips, Rebuild Ford Differentials, The Best Ford Tech Articles, 2023 DiY Ford. can tell this is a 9-inch from the removable carrier on the front. Besides the styling of the Ford Edsel, even the axle shafts were very unusual. differences, 28-spline car axle shafts are much more abundant than the When you look on the inside, you see WAB- 4025A.
ford 9 inch rear end gear ratios chart
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