Mustangs The engines flexplate is a critical part to transferring power to your drivetrain. The heat treated aluminum alloy well suited to absorb high impact shock loads. The 1958s and 1959s have two dimples on either side of the housing and some have drain plugs. at car swap meets and shows are the units pulled from trucks with the Axle code is a combination of letters and numbers stamped on a small plate/tag attached to your vehicles rear axle. larger wheel bearing housings. The transmission yokes are CNC machined to assure concentricity and balance for ideal driveshaft operation. Axle Ratio = (RPM X Tire Size)/ (Speed (MPH) X 336) Example 4.88 = (2881 X 37)/ (65 X 336) CASE" That is your vehicles axle code. This pinion shows excessive wear on the trunnion surface and should not be re-used. 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. Discount is automatically applied. It was in production on many Ford cars and trucks, first appearing in 1957 and finally replaced by the Salisbury-style 8.8-inch axle in 1986, saving about 50 pounds and boasting increased efficiency. The Ford 9-inch has a reputation as a durable axle that can transmit enormous torque, and this is rightfully deserved. On some tags, the first 2 digits don't appear on the tag, but they must be used to identify the axle. It was required to repair a leaking weld. Ford Axle codes help identify the vehicles positraction as well as an axle to gear ratio. them. If you are building a 9-inch Ford rear end for your project know you have plenty of options in gear ratios, axles, bearings, brake kits, and much more! We offer Ford Racing ring and pinion gear sets in 3.55, 3.73, 4.10 and 4.56:1 gear ratios for solid axles, as well as Motive Gear's 3.90 and 4.30:1 gear sets. small bearing housing can be differentiated from a large bearing housing 1960-1967 two dimples, flat center band, oil level hole in the back cover. A Lincoln Versaille rear is a 9" with 28 spline axles, big axle bearings, and disc brakes. This is a relatively common issue on these housings. Dive into some of the history and unique differences between Ford and Chevy spindles for solid front axles and what will perform best on your hot rod. However, the critical aspects of the rear axle are the axle flanges and axle lengths. Content. the best. 8. shafts. As part of my research, I went to renowned Currie Enterprises and gathered one of just about every different 9-inch axle variant. for the swap to be performed. SHARE THIS ARTICLE: Please feel free to share this post on Facebook / Twitter / Google+ or any automotive Forums or blogs you read. The date code is stamped on the tag. The most As you proceed to the Ford Axle Code chart, you will notice that the table indicates it has a Ford 8.8 Limited Slip Differential with an Axle Ratio of 3.55. See all 20 photos. 1957 no dimples, flat center band up the center of the rear cover, bottom drain plug. - as in the Mustang line, most however never received a factory 9-inch). found in the trucks up to around 1982. 289 Hipo cars.The N cases went with 31 spline centers and are for rugged It was not the only axle used, but was by far one of 56" widths I keep in mind for Mustangs are the following: The Ford chart below contains a general decoder system for Ford pickup from the 1980s till the 1990s. Trust Speedway Motors for best-in-class parts for Ford 9 Inch - delivered quickly, efficiently and without any hassles. 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. This chart applies to all Ford non-overdirve transmissions, manual and automatic. Like the 9-inch, the 8-inch uses no carrier breaks, meaning you can put a 5.43:1 ring and pinion in a 2.79:1 rear without changing to a smaller differential carrier. You can then enter any term, such as Axle Ratio,to search the guide. 74-75 medium duty large bearing, and. housings also evolved over the years: The The same applies to the rear differential. The Ford 10.25-Inch Rear Axle Replaced The Dana 70 After 1985. The rear-end housing has a vast amount of ford 9-inch gear ratios available. How do I find the Axle Ratio and Limited Slip? Rusty but Rare 1976 Chevy K10 Sport Truck Revival! Generally most cars received the small axle bearings and 28-spline axle Would very much apreciate it if someone would post it again. The repair process requires the axle to be disassembled and thoroughly cleaned. 1. Axle length is not always identical from side to side, as many 9-inch applications use an offset center, so you must measure the housing carefully to be able to order the proper axles. These tags provided information for the service technicians but wasnt that important for the vehicle assembly plants. This complex fixturing and welding process, coupled with fuel economy concerns, is what eventually led to their production demise. The bearing cups are in the pinion cartridge and the third bearing trunnion roller bearing is located in the gear case. The rear end width is important on shoebox Fords if you want some selection on wheels. 8.75, 9.25, Ford 9 inch, and GM's 8.25 inch . The 1957 . Restoration matching issues will be avoided since the right optioned components will be used to make the restoration. The fourth version did not have the N in the casting on the outside but still retained the rib structure. This is by far the most common axle used by restorers, hot rodders, customizers, and racers. and this style of center carrier housing is best suited for drag cars or The Mustang Shelby GT housing is an easy one to spot, albeit rare, because it has extreme tapering of the axle tubes at the ends. If the case has two verticle RIBS ,from top to Axle This format is also applicableto casting date codes. 65-66 Mustang = 57.25 inches. In order to verify a nodular unit, you need to look on the inside of the casting. replaced, and that is why it remained in use for so long. Ford codes may have one or two characters, but any code starts with a letter. Vintage 1980 Yamaha Enticer Snowmobile Revival to Former Glory. It was then replaced by the Ford 8.8 inch rear axle. 9-inch complete rear axle is approximately 35 pounds heavier than an 8.8 rear axle with approximately the same components. Only the N-series cases are made out of the stronger, more desirable, nodular iron. Ford used inches 1/2 ton 4X4 pickups! The Final Drive Ratio shows you how many times the engine turns for one complete turn of the tires. Many people prefer to just call it the Ford 9-inch-style wheel end. used the 9-inch rear, regardless of engine size. It is an 8 inch rear axel so many parts interchange with many other years Fords and Mercury's using an 8 inch axel. The Ford 8.8-inch axle has the same ring gear mounting distance (see Chapter 7) for all ratios, just like the 9-inch. The exception is the 2002-2003 Ford Explorer Sport which still used the solid rear 8.8-Inch axle. Torsion Axle Vs. Today we go over the important step of how to choose your Gear Ratio when building a 9-Inch Rearend.Make sure to Like, Comment and Subscribe for more videos!. carriers, while sometime in the early 70's the switch was made to mostly Typically with just this information, you can cross reference what you need to know about the axle. more plentiful starting in the early 1970's, many of the units found today If measuring the drum-to-drum distance, add .200-inch to these values. 2. It is underneath one of the nuts that holds the third member in place. The tags were replaced with adhesive labels that are placed around the axle tube near the brake and wheel end. station wagons-cars with 351 and up engines received 9-inch units - as did Some differential experts tell you that the Blue Oval engineers copied the 12-bolt design when they came up with the 8.8-inch axle. mind as mentioned, the Fairlane spring perch distances were not the same 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 . are you wanting the listing for the ratio tags? The format has changed over the years but mostly follow this sequence:. In contrast, on the 9-inch, two nuts on the bottom at about the 6 and 7 oclock positions cannot be accessed with a socket and require a wrench. The close-ratio and C4 289HP trans were mated to the 3.50, and occasionally to the 3.89 and 4.11. Proceed to match the code with its corresponding Axle Ratio column on the table to find the ratio. 67-70 Mustang = 59.25 inches. duty.And believe it or not, they were also used in some FE equipped Ford 1967-1973 Mustang axles identified by wheel flange: two large holes and counter sunk center - 31 splines. always looking for good content to share with Ford 9-inch can be found under 1974-1986 F-150s and 1978-1986 Broncos. wheel drives) right up until about 1982, these housings are by far the The 9-inch third-member bottom fasteners, on the left, can only be accessed with a wrench. It is common to find a 9-inch in a old Falcon or These first became available on the 1964 Galaxies with the 427-ci engine and were found on many higher horsepower cars and trucks. The Ford 8.8-inch axle has a cast center section and the internal components are installed from the rear. some 302 4V cars with optional gear ratios). axleshafts. GM X-Body Nova Complete Rear End Packages. 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For the Ford 9" rear end to be smaller and lighter than a Dana 60, the weight has to come from somewhere. but the link i was refering to listed codes by year and model. Dana 50 - Ford Front Dana 60 - Standard or Reverse Rotation Ring Gear Diameter: 9" / 229mm Ring Gear Diameter: 9.75" / 248mm Pinion Diameter / Spline: 1.375" / 26 Pinion Diameter / Spline: 1.625" / 29 Ring Gear Bolts: (10) 7/16"x20 RH Ring Gear Bolts: (12) 1/2"x18 RH Cover Bolts: 10 Cover Bolts: 10 Carrier Breaks: None Carrier Breaks: 4.10 / 4.56 Locate the Safety Compliance Certification Label on the driver's side front or rear door panel. Drag Racing 101 ~ Everything You Need to Know! The bar code is present on this unit as well, although later axles just carry the bar code and the metal tag is no longer required. We'll work to keep you motivated and informed and with industry news, product information and reviews, event coverage, and well-curated articles and stories intended to inspire and educate. This sensor is for the anti-lock brake system. We have a large selection of gear sets in stock and can recommend the correct . Like the H in our case shows a car with a limited-slip differential. Ratio & type. Any of the W-series cases do have a fill plug machined in them. also received the larger axle bearings housings. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. It allows for the pinion side Center Section to be removed. WJ Handy Dad recommends safe practices when working on vehicles/homes and or with tools seen or implied in this video. 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. the axle from around the 1957 model year right up until the early 1980s truck housings received even beefier center carrier housings and tubes, In this chapter I share a summary of decades of work on these axles. 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. The Ford 9 inch housing is a semi-floating, drop-out axle. Are reviews modified or monitored before being published? This includes the Center Case, the Pinion gear, the ring gear, and the differential or spool. Gear ratios can be quickly changed by removing the axles and driveshaft, unbolting the . For example: Warranty Period: 1 Year or 50,000 Miles: Part #: MGK-300 : Ring Gear Diameter: 8.5 Front (Inch) 9 Rear (Inch) Ring Gear Material: 8620 Steel: Differential . 3. The Lincoln LS and Jaguar S-type were equipped with an 8-inch, castaluminum, independent- style carrier. wheel drives) right up until about 1982, these housings are by far the This is a great upgrade component to use for high-power applications or if you are replacing your cartridge. The 8.8 is a traditional semi-fl oat Salisbury axle with C-washers for axle retention. The axle was developed to replace the Ford 9-inch axle.This axle is still in production today for a variety of Ford vehicles. 3. No Brake Fluid Coming Out When Bleeding: The Causes and How to Fix, 15 PENSKE Truck Warning Lights: Video Included, Manufacture date of the particular car model (DATE). (The third digit of the axle code identifies the ratio and/or capacity of the front axle, if applicable. There was a desire to have the stronger, larger tubes near the center of the axle but still retain the narrower tube ends for the wheel ends and the unique Shelby suspension brackets. While the iron is molten, magnesium is added to increase the shear strength of the alloy. These used what is referred to as a 31-spline carriers and axle shafts. It's important to know the friction quality and pad size before selecting a new set of disc brake pads. But if youre looking for an original, they can be spotted quite readily even without an axle identifycation tag. . The third member supports all of the gears and bearings, which allows for easier gear ratio swaps if you have multiple third members. Notice the 8.0-inch ring gear diameter cast into the rear cover below the fill plug. The entire S550 Mustang generation has had 4, due in part to the limited-slip differential option. is by far the most abundant case being used in both full size Ford cars Centers: 1957 - no dimples, flat center band up the center of the rear cover, bottom drain plug, 1958-1959 - two dimples on back of housing, flat center band, some had drain holes, 1960-1967 - two dimples, flat center band, oil level hole in back cover, 1963-1977 Lincoln, LTD, Thunderbirds had 9.375 inch centers, housings were cut away at the gasket surface for ring gear clearance, one curved rib at the front top portion of differential, strong but no gears, 28-spline axles cannot be shortened and resplined (they're tapered), 1972 and earlier 31-spline axles have the ability to be shortened, 1973 and later The axle code in our example, H9, has a specific meaning. By positraction, we talk about the type of differential the car uses, whether a limited-slip differential or a conventional non-Positraction differential. With so many better performing aftermarket options today, there is no reason to use these marginal brakes. Axle Size/Strength Chart; Explained Videos; Tech Articles; 9-Inch Ford. There are a few exceptions that you will see in the Ford Axle code chart. Here is the step by step guide: The Safety Standard Certification/ Safety Compliance Certification label is located on the door pillar of the left driver seat of your truck. . 1-wire alternators are perfect for engine swaps or just keeping things simple for your project. People tend to be drawn to it like a magnet. for 1965-1966 (the same width as 1964-1965 Falcons and 1962-1965 Fairlanes Later The 9-inch ring and pinion is front-loaded into the rear end housing. Like the H in our case shows a car with a limited-slip differential. How to Narrow a 9 Inch Ford Rear End. Our experts will help you find the correct ring and pinion set for your particular application. Ford improved tooth contact of the Ford 9 inch gears by locating its pinion gear lower on the ring gear. The Godfather of Performance Axles-The Venerable Ford 9-Inch, Ford 9-Inch Axle And Bearing Retainer Retains The Axle In Case of Breakage, Checking A Ford Axle With a Deep Socket To Confirm If It Is a 8-Inch or 9-Inch, Ford 9-Inch Rear End Axle Flange Identification, Measuring a Ford 9-Inch Axle Housing and Axle Lengths. trucks varied more, early half ton trucks got the 28-spline axles and 9-Inch Standard Ring And Pinion Gear Sets (3.00 to 6.50 Ratios) $240.00. differences, 28-spline car axle shafts are much more abundant than the We offer a guide to follow when selecting a new set of brake pads for your race or street car. If you are fortunate enough to find an axle with the identification tag still attached, it will help solve part of the mystery of what application the axle came from and what might still be inside. The code, 4L11, tells us that it is a 4.11:1 ratio with a limited-slip or Traction-Lok differential. If the socket fits (as shown in our photo below) it is a Ford 8-inch housing. 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). Here is an example of such a unit. 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. 31-spline axles and carriers for most trucks. You bring the gumption. (often referred to as a "POSI") came to be a popular option and The axle housings themselves had many different variations over time as well. determine which axle housing many cars and trucks received. The small are 2.835" or just under 3" and the large are 3.150" or just over 3". there is the letter "N" than this is a NODULAR CASE (GREAT) this 1967-1973 Mustang, Torino, Ranchero, Fairlane 9-inch So dont be surprised that most of these axles leak from the welds. Here is a quick visual summary: The 1957 housings do not have dimples on them and have an oil drain plug. A forum community dedicated to Ford performance owners and enthusiasts. Ray. Comet that has had a HIPO SMALL block with 31-splines and a locker. One of the primary reasons why the 9" Ford rear end has come to dominate drag racing is the ease with which thirdmembers with various ring & pinion gear ratios can be installed. Since 2011, V6 and V8 Mustangs have used Ford's 8.8" rear end, but before that many used a 7.5" rear. Come join the discussion about popular models such as the Mustang, Galaxie, Falcon, Fairlane, Torino, Shelby and many more! The leaking weld area is then ground down and a MIG or TIG welder is used for the repair. - Rod Stroke Ratio - Stroke Size Rear Gear Requirements - Rear End Gear Ratio Needed - Speed from RPM, Rear & Trans. 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. Once you have identified the label, locate the word AXLE under the bar code section. So rare Ford dropped it after 66, when they also dropped the 7" Equalock. 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. Ford cars and trucks from 1968 on have an axle code on the Certification Plate, information on this plate can be used to determine if you vehicle is factory equipped with a limited slip positraction rear end - differential. The Exceptions to this were the ultra Hi performance Boss 302s, Here are the internal sides of the same three units. The straddle-mounted pinion has a roller bearing in the gear case, which provides additional support for the pinion under heavy loads. Measuring for your 9-inch axles requires a few basic measurements to be taken. if so is this what you are looking for. Additionally, the Ford 9-inch utilizes a removable center section, often referred to as the Ford 9-inch pumpkin, Ford 9-inch chunk, Ford 9 inch third member, or even a Ford 9-inch pig! middle of case it is a good IRON type IF in the very center of this case 67-71 Comet, Cougar, Mustang, Fairlane = 59.25 inches. Axles Tubes Are 4-Inches. Our example is going to assume a 6000 rpm redline and 26-inch-diameter tires. The 10,41 gear ratio is also great for off-road activities . 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.