and trucks throughout the 1970s. It may not be a stock or original Ford 9 inch rear end, but it carries the originals dimensions and specs and for all intents and purposes they are still considered a Ford 9 inch. 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 axle from around the 1957 model year right up until the early 1980s Most of 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. 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! About | Contact | Terms | Privacy. The Ford 8.8-inch is very similar to the General Motors (GM) 878-inch, 12-bolt axle. features the legendary Ford 9-inch ring and pinion strength, 5-on-5.5 lug Ford Also Equipped The 1980-Current E-350 Dual Rear Wheel And Some E-450 Super Duty Vans With Dana 70 or Dana 70HD Rear Axles. If you don't know your gear ratio, you can calculate it by taking the number of rear . Our editors pick the products & services we write about. . As part of my research, I went to renowned Currie Enterprises and gathered one of just about every different 9-inch axle variant. The chart is based on RPM levels at 65 mph (105 kph) and a drive train running at a 1:1 gearing ratio, meaning the . Fords small block and big block engine families have their share of flexplate differences. I guess this helps add to the splendor of the vehicle. socket size and 7/16" fine thread. First, you need to understand some fundamentals of the Ford axles to help guide your quest. and Fairlane axle housings are often grouped together because they are the For the Ford 9" rear end to be smaller and lighter than a Dana 60, the weight has to come from somewhere. Some of the heavier cars like the Galaxies also received the The first table is the code and gear ratio. Thanks. Are reviews modified or monitored before being published? Using the correct part is imperative to engine longevity and proper drivetrain assembly. Click on the 'Submit' button to find out how you 3. These shafts had a longer brake spacing offset and a unique brake drum register diameter of 2.870 inches, which was uncommon for the time. This complex fixturing and welding process, coupled with fuel economy concerns, is what eventually led to their production demise. 4. An assortment of Ford 9-inch axle stampings is welded together to create the housing. version of the case came into use in 1967 or in subsequent years, but it At this width, many were used in street rod applications without modifi cation. housings appeared in either 1966 or 1967 with the familiar "Hump" The Rhodes Race Cars Unwelded Fabricated Rear End Housing Ford 9 in. 9-inch (cars) have a 5-on-5 bolt circle and the axles cannot be shortened. Application Ring Gear And Pinion NL or L Axle Shaft Splines Additional Information; Ratio: Diameter of RG: WBG-E : Ford Truck '63-71 F100: 3.70: 9 in: NL: 28-WBG-F : Ford Truck '63-71 F100: 3.89: 9 in . A copy of the Ford Axle Code Chart is linked below in this article. We'll also walk you through choosing the correct parts in order to make this installation a breeze! thanks. station wagons-cars with 351 and up engines received 9-inch units - as did When you look on the inside, you see WAB- 4025A. with 3/8" fine thread, while the larger bearing use 11/16" Generally, aftermarket shafts have to be purchased Check it out. (The third digit of the axle code identifies the ratio and/or capacity of the front axle, if applicable. 1/2 in Ring Gear Bolts: WCN-B: Ford Pass '63-64: 3.50: 9 in: NL4-1/2 in Ring Gear Bolts . The 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. most abundant. can tell this is a 9-inch from the removable carrier on the front. 76-77 large bearing. Some of this information is very important as it is becoming more and more difficult to find documentation on axles and differentials that were built more than 40 years ago. By positraction, we talk about the type of differential the car uses, whether a limited-slip differential or a conventional non-Positraction differential. When narrowing a Ford 9 inch rear end, the first step is determining the overall length you need. Also note there isn't a cover on the rear like most axles. mind as mentioned, the Fairlane spring perch distances were not the same also received the larger axle bearings housings. 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: The 9-inch housing's center section will not allow the socket to clear, and . Differentials take the power from the rear axle and transfer it to the rear wheels by way of special gears. Enter the required Overall Width, Pinion Offset (location), Brake Space and Drum/Rotor thickness to find axle length and housing width. The last set of numbers is the vehicle plant code. Details: Motive Gear . For example: Cost and complexity are two. around 64-65 I believe.They are most often found behind the later 428CJ The case Ford personnel and/or dealership personnel cannot modify or remove reviews. *** SELECT GEAR RATIO FOR PRICE *** Categories. But it will also use more fuel in all situations because the engine's rpm will be higher. and this style of center carrier housing is best suited for drag cars or 1-wire alternators are perfect for engine swaps or just keeping things simple for your project. Proceed to match the code with its corresponding Axle Ratio column on the table to find the ratio. medianet_width = "300"; The certification plate can be located on the lock face of the left door edge. When you buy through our links, we may get a commission. Ford used Hypoid offset is the distance between the centerline of the pinion and the centerline of the ring gear. 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!. Careful aftermarket shops and their stringent attention to repairing these housings are able to correct many of these issues. there is the letter "N" than this is a NODULAR CASE (GREAT) this 1967-1973 Mustang axles can be identified by wheel flange: Oval hole = 28 splines; Two large holes and counter-sunk center = 31 splines. The ring gear speed sensor is shown in the upper right-hand portion of the photograph. Traditional BOM's are 6 digits followed by 1 or 2 digits and start with the numbers 60 or 61. The fourth version did not have the N in the casting on the outside but still retained the rib structure. This bearing and the casting structure surrounding it need to be carefully inspected as this is a common area for cracks. Here is an example of such a unit. Then take that answer and divide it by 100% and then multiply it by itself to find out what gears/axles you need to run to achieve the desired tire size. Identifying a differential hinges the ability to distinguish the two primary rear-end types---the 8- or 9-inch rear end---denoting ring-gear size. If measuring the drum-to-drum distance, add .200-inch to these values. This custom axle tag was obviously hand cut as evidenced by the sharp tin-snipped-looking ends and includes DSO, for Dealer Special Order. A 28 spline axles are tapered and cannot be shortened and re-splined. earlier housings used in cars from 1957 to mid 1960s tended to be the This chart references the connection between the month codes and the actual month. 8.75, 9.25, Ford 9 inch, and GM's 8.25 inch . Code Application Ring Gear And Pinion NL or L Axle Shaft Splines Additional Information; Ratio: Diameter of RG: WGA-A: Lincoln Mark Series '69-'71 Thunderbird '69-70: 2.80: 9 3/8: NL: 31-WGA-B: Lincoln Mark Series '69-'71 Finally, using bearing retainers that secure the axle at the flange, versus a C-clip style that secure the axles at the differential, means in the case of axle failure the axle flange and wheel will stay with the housing and not leave the vehicle, potentially causing brake failure and lack of control on the racing surface. The fundamental difference between these axles is how the gears are supported and which end of the axle housing (front or back) that they are assembled from. You will also learn how to identify the codes in Ford vehicles. - Rod Stroke Ratio - Stroke Size Rear Gear Requirements - Rear End Gear Ratio Needed - Speed from RPM, Rear & Trans. If the socket fits (as shown in our photo below) it is a Ford 8-inch housing. The 1960s to 1967s still retain the dimples but also have an oil level plug in the back cover. And you can find the axle code charts on the internet from your manufacturer. There are three bearings on the pinion shaft: the two traditional tapered roller bearings for the head and tail bearings with a third cylindrical roller bearing on the opposite end of the pinion head. 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. This is a great upgrade component to use for high-power applications or if you are replacing your cartridge. i.e. duty.And believe it or not, they were also used in some FE equipped Ford Variations "Pro" gears are designed specifically for drag racing. weakest and had abrupt ending but welded carrier centers to tubes and a Keep in Produced from 1957 to 1987 by the Ford Motor Company, it was used in full size . From my piles of rare parts, here is an independent cast-iron 8.8-inch carrier axle. Ford rear ends, or differentials, were manufactured by either the Dana Corporation or Ford. 1973 and later cars have a 55 bolt pattern, and the axles cannot be shortened. Some have only one access hole for the backing plate bolts, while others have three. This strengthens the whole rear end assembly. There is a very fundamental difference between Fords 8.8- and 9-inch axles. Later at car swap meets and shows are the units pulled from trucks with the Find the two-digit code under AXLE. 9-inch complete rear axle is approximately 35 pounds heavier than an 8.8 rear axle with approximately the same components. Interestingly, the Ford axle uses the exact same size of tapered roller bearings as the GM 12-bolt. GM X-Body Nova Complete Rear End Packages. Learn more. This is by far the most common axle used by restorers, hot rodders, customizers, and racers. Ford differential tags are very . 5.4L (including Lightning) and some 44 super cabs and higher GVWR models which were equipped with the heavier-duty 9.75-Inch rear axle. smooth backside. Generally most cars received the small axle bearings and 28-spline axle The Ford 10.25-Inch Rear Axle Replaced The Dana 70 After 1985. First, the pinion shaft housing is removed from the front of the housing by removing five bolts. It was also used in the 1983-1996 full-size Bronco, and E150 Econoline . 1960-1967 two dimples, flat center band, oil level hole in the back cover. Ford Axle codes help identify the vehicles positraction as well as an axle to gear ratio. On this particular third member, the original copper washers that were under the factory fasteners have been discarded as well. the few cars and early Broncos (and some early trucks) which received No. control arm mount. Mustangs Pay attention to the Axle column, where you will get the correct Axle identification code similar to the one stamped on a metal tag on the rear-end axle. The Ford chart below contains a general decoder system for Ford pickup from the 1980s till the 1990s. So dont be surprised that most of these axles leak from the welds. 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. housings. The * Pro Gears are specifically designed for drag race only. This larger offset (hypoid distance) between ring-gear . 3.00, 3.25, and 3.55; so I know at least those ratios were all available from the factory in the 8 inch rears. The first two digits of the axle code identify the ratio and capacity of the rear axle. Exceptions to this were the ultra Hi performance Boss 302s, The following chart of Tire sizes and axle gear ratios are meant to give a general idea of the relationship between the differential gear ratio and the tire size and what effect the ratio has on power output and fuel economy. 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 WAR, WAA, and WAB cases have the same ribbing as the N case, but are missing the ever important N feature. This is an example of the brakes that fi t the small wheel end bearing for a 10 x 2-inch-wide drum brake on the left and a 10 x 1-inch on the right. . A The exception is the 2002-2003 Ford Explorer Sport which still used the solid rear 8.8-Inch axle. 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. We're Axle Like the H in our case shows a car with a limited-slip differential. The aftermarket has responded to this by offering a plethora of ratios ranging from 2.91 to 6.50:1. much more difficult to locate. 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 7.5 should be plenty adequate for the application you describe, but an 8.8 is best. are you wanting the listing for the ratio tags? 2.75 open differential. If the case has two verticle RIBS ,from top to There is a gear ratio stamped on the tag. in cars and trucks. 1957 . Because You can do this by multiplying by the gear ratio. It is a column with the label AXLE on top and the Axle Code at the bottom. GM F-Body Complete 9" Rear End Packages. Remember this is the RPM based on no slippage at the torque converter so your actual RPM will be different during acceleration or times when the torque converter is slipping.3.55 gear: https://amzn.to/2HMrffx3.73 gear: https://amzn.to/2r0MakF4.10 gear: https://amzn.to/2JouvuH#wjhandydad #crownvic #reargear #gearratio #DIYhttp://www.WJHandyDad.comDisclaimer:Due to factors beyond the control of WJ Handy Dad, I cannot guarantee against improper use or unauthorized modifications of this information. . 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. Later The axle code in our example, H9, has a specific meaning. Well show you what to look for in this buyers guide. 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. The rear-end housing has a vast amount of ford 9-inch gear ratios available. for 1967-1970 (same as 1966-1969 Fairlane, Torino, Comet & Cyclone non The same applies to vehicles with codes containing numbers alone. Where A=the first number (static reduction), Bi=Gear diameter, Bf=Ring Gear diameter, Cf= (Crown Wheel dia.) Your email address will not be published. 1967-1973 Mustang axles identified by wheel flange: two large holes and counter sunk center - 31 splines. 1967-1973 Mustang, Torino, Ranchero, Fairlane 9-inch Spring perches must be cut and re-welded in order There were also 8-inch ring gear independent carriers in production. Here is a picture of the milling machine cutting new spline teeth after the axle has been cut to length. The complete guide to master any grease gun, Battery vs. Starter vs. Alternator: How to jumpstart even the most stubborn of car. The Ford Mustang and Thunderbird used this style for a few model years. It is the one most commonly With 568 Ford 9 Inch Parts for sale, you're sure to find the ideal parts . See all 20 photos. $(document).ready( function () {$('#dtTable').DataTable( {paginate: false} );} ); 1954 Ford F100 / 2000 Lincoln Towncar Chassis Swap for Under $1,000, Tire Width Minimum, Maximum, and Ideal Size Chart by Wheel Width, An Online Magazine for DIY Hot Rod Builders. GM Tri 5 55-57 Chevy Complete 9" Rear End Package. The same applies to the rear differential. larger wheel bearing housings. 2. 8. Because of their strength, youll see these 9 inch rear ends used in just about every make of car, truck, and customs. 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. Ford Axle code identification, Read more: Front Axle Of A Car: Types, Functions, And Replacement. The WFE-V2 helps us fi nd the decade of the 1970s. The 8.8 is a traditional semi-fl oat Salisbury axle with C-washers for axle retention. - as in the Mustang line, most however never received a factory 9-inch). for it. We will look at what axle codes are and how to identify the axle ratio from the code. Anyone know? The Ford version uses larger axle shafts and different lube flow strategy. Unless you are building a Pinto or straight six-cylinder vehicle, you want to avoid it. TEETH 1 4.11 79-0097-1 37-9 1 4.29 79-0098-1 30-7 1 4.57 79-0101-1 32-7 2 5.14 79-0109-L 36-7 2 5.17 79-0112-L 31-6 2 5.20 79-0111-L 26-5 For Maximum . One exception to this was This is 2.25 inches for the Ford 9-inch and 1.5 inches for the 8.8-inch axle. Performance Front & Rearends GM Vehicles There are four versions of the nodular iron third members that were produced from the factory. All the Galaxies I have seen from throughout the 1960s 31-spline carriers and "Traction Loc" style posi unit. With its 2.250-inch offset, the Ford 9 inch gears hypoid distance is greater than popular competitors, most of which are at 1.5 inches or even less. them. Measuring for your 9-inch axles requires a few basic measurements to be taken. This is because the supply is limited to The 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. actual car posi units, which were primarily 28-spline carriers, can be found in the trucks up to around 1982. The Ford Axle code chart is a handy tool for positraction replacements. The third member supports all of the gears and bearings, which allows for easier gear ratio swaps if you have multiple third members. Any Ford 9" carrier will fit, as long as it has a fill plug on the side. Refer to the Axle Ratio table to determine your rear axle ratio and Limited Slip. 67-73 medium and big block Mustangs and Cougars. Leaf Spring: The Similarities And Differences. In the 1980s and 1990s, the Lincoln Versailles brakes and complete axles were highly sought after because it was the only way to get a 9-inch axle with discs in a 58-inchwide axle package. We have a large selection of gear sets in stock and can recommend the correct . as the Mustang. widths I keep in mind for Mustangs are the following: 52" the best. and Fairlane axle housings are often grouped together because they are the If you know your axle tag number, simply go to the second table. Also, since this axle is used in so many circle-track race cars, the 9-inch enjoys an unparalleled availability of different gear ratios in the aftermarket. socket size and 7/16" fine thread. 289 Hipo cars.The N cases went with 31 spline centers and are for rugged 74-75 medium duty large bearing, and. 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. Hot rodders and drag racers use 9 Ford rear-ends and their aftermarket descendants in just about everything not just Ford cars and trucks. The "rough" Read more: CV Axle Boot: Overview, Signs, And Replacement. Most have the two driving holes for the manufacturing process while one has a more square looking drive end. The third reason was basic health and safety concerns for the assembly technicians and other employees who handled the axles in the manufacturing and assembly plants. The most For example: The tag will say: 350 for 3.50:1 ring and pinion gear ratio. The material and heat treating provide excellent wear service life, but doesn't handle shock loads as well as Pro 9 in gears. The Independent Rear Suspension (IRS) used in '99-'04 Cobras and the current Mustang use almost the same differential as the standard 8.8. many half ton trucks continued to utilize the 9-inch (both 2 wheel & 4 Gears / Diffs / Install Kits Listed By Vehicle, Standard Gears & Pro Gears Dana / Ford / GM / Mopar, Strange T-Shirts. Here is an example of a weld repair on a factory original housing. medianet_versionId = "3111299"; The pattern in most cases differed from the car, and due to the bearing size Builder V8 Billys 1966 Ford Fairlane Twin Turbo 427 RestoMod was built for Street and Strip. Ford 9 Inch Rear End Gear Ratios Chart1969 impala ss 427 4 speed. truck housings received even beefier center carrier housings and tubes, 31-spline carriers and "Traction Loc" style posi unit. You 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. You can install a true 9-inch gear in these housings as well. Axle code is a combination of letters and numbers stamped on a small plate/tag attached to your vehicles rear axle. 6. only need to carry one spare should you choose to. A strong 9" with a nodular diff and 31 spline axles is fairly comparable in strength to a stock Dana 60 rear end. The Ford 8.8-inch axle has a cast center section and the internal components are installed from the rear. The typical 3 inch-diameter tubes can be a bit flimsy in higher-power applications. It is easy to locate the Axle Ratio from the Axle code, but first, we need to know how to get the Ford axle code itself. Original ratios are 2.47, 2.50, 2.75 or 3.0 with the 2.50 being the most common. for the swap to be performed. JavaScript is disabled. Learn how to hook up a 1-wire alternator on your vehicle. The Maverick 8" or Ranger 7.5 and 8.8 are good options. 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. small bearing housing can be differentiated from a large bearing housing Discount is automatically applied. Many people are not aware that Ford made a smaller banjo axle and confuse the 8-inch for a 9-inch. Because of the long production history of this axle, many variants are available. It's . While the 8.8 is similar to the 12-bolt, it isnt identical. Nine Inch Rear Axle. version of the case came into use in 1967 or in subsequent years, but it There are several reasons for this. The narrowest production 9-inch axle is 56.375 inches. Most of If there is an "L" in between, you should have a locking or limited slip differential. Part Category: Disc Brake Rotor and Hub Assembly.1999 Ford Ranger Rear Axle Assembly 7.5 RING GEAR, 9 BRAKES, 4.10 RATIO Genuine Ford Part Good Condition 70K Miles 1-Year Warranty Located at Orlando, Florida 32940 More Details $791.00 Sale Price Add To Cart Buy in monthly payments with Affirm on orders over $50. Along with the many different brake and wheel end varieties, many different styles of axle shaft ends were manufactured. smooth backside. First locate your current gear ratio and tire diameter and then find your approximate RPM at 65 MPH, then reference your new tire diameter with your desired RPM to find the new gear ratio needed. 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. larger wheel bearing housings. the Broncos from 1966 to 1977, they stayed with the 28-spline units. Mustangs and Fairlanes. can easily tell this is a 9-inch from the hump in the rear and (2) 2. narrowed rear ends due to the added strength in the middle. This is when making a few phone calls to reputable axle builders can be helpful. Call 800.979.0122, 7am-10pm, everyday. 59.25 inches to 61.25 inches, 1957-1959 Ranchero and station wagon rears, 57.25 inches, 1967-1971 Comet, Cougar, Mustang, Fairlane, 59.25 inches, 1967 Fairlane 63.50 inches (coil springs), 1957-1959 Ranchero and station wagon 57.25 What Is Car Battery Voltage And Why Is It Important? applications due to the demise of most performance engine options in the
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