The same applies to the rear differential. 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. Gear Ratios - RPM from Speed, Rear & Trans. most abundant. narrowed rear ends due to the added strength in the middle. These used what is referred to as a Ratio & type. Most of Notice the 8.0-inch ring gear diameter cast into the rear cover below the fill plug. Exceptions to this were the ultra Hi performance Boss 302s, at car swap meets and shows are the units pulled from trucks with the Some tags reference the week of the month instead of the exact day and just use a letter (A to E) for first through the fifth week of the month. Both 8- and 9-inch axle housings are made from a series of stampings that are fixtured and welded together. The Content. The close-ratio and C4 289HP trans were mated to the 3.50, and occasionally to the 3.89 and 4.11. medianet_versionId = "3111299"; The The This is because the supply is limited to 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. So rare Ford dropped it after 66, when they also dropped the 7" Equalock. and trucks throughout the 1970s. 1960-1967 two dimples, flat center band, oil level hole in the back cover. The Ford chart below contains a general decoder system for Ford pickup from the 1980s till the 1990s. FORD FINAL DRIVE RATIOS. It's important to know the friction quality and pad size before selecting a new set of disc brake pads. by the size of the nuts and thread used to retain the brake backing plates Thanks. MaritzCX moderates public reviews to ensure they contain content that meet Review guidelines, such as: No Profanity or inappropriate defamatory remarks, No Personal Identifying information (e.g., customer phone number or email), No Competitor references (e.g., another brand or dealership), Dangerous behavior (e.g. This will ensure that the correct replacement parts are purchased or salvaged from a junkyard to be used in the vehicle. Projector vs. Reflector: Plan to upgrade your headlights? actual car posi units, which were primarily 28-spline carriers, can be Many people prefer to just call it the Ford 9-inch-style wheel end. For example: The tag will say: 350 for 3.50:1 ring and pinion gear ratio. Ford rear ends, or differentials, were manufactured by either the Dana Corporation or Ford. 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. For the Ford 9" rear end to be smaller and lighter than a Dana 60, the weight has to come from somewhere. determine which axle housing many cars and trucks received. The Lincoln LS and Jaguar S-type were equipped with an 8-inch, castaluminum, independent- style carrier. 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. Here is an example of such a unit. Richmond Tech Support. 1964-1971 Falcon, Comet, some 1965-1969 Mustangs or 1964-1967 Ranchero V8 cars. Of the four versions of the N case, three have an actual N cast into it right above the pinion cartridge. There is a ton of aftermarket support for this axle (see Chapters 3 and 4 for more details). inches All of the 8-inch case nuts can be accessed with a socket. Ranger Station, Submit Watch the video for all the details and you'll wonder why your shop hasn't had a set sooner! For example, Ford says the 2018 F-350 Super Duty 4x2 regular cab pickup equipped with the 6.2-liter . There are three versions with external Ns cast in; note the more curved style on the top right. We have a large selection of gear sets in stock and can recommend the correct . Ford personnel and/or dealership personnel cannot modify or remove reviews. GM Tri 5 55-57 Chevy Complete 9" Rear End Package. "N Case" was no longer needed for passenger car/truck The first table is the code and gear ratio. and 429CJ cars.From what I have seen don't expect to find them in 390 or in cars and trucks. determine which axle housing many cars and trucks received. Like the H in our case shows a car with a limited-slip differential. Both axles share a common design and are often referred to as banjo style or third-member style. $(document).ready( function () {$('#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. The first two digits of the axle code identify the ratio and capacity of the rear axle. 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 aftermarket Daytona-style pinion cartridge accommodates the larger and stronger pinion head bearing. About 8 months ago, I came across someone who had a very complete model, ratio chart for 9 in rears, After a computer crash, I have lost it. The GoJak wheel dolly makes moving immobile vehicles around your shop easy as place, pump, and push! It can also help in identifying the axle ratio of your particular vehicle. However, the critical aspects of the rear axle are the axle flanges and axle lengths. for 1967-1970 (same as 1966-1969 Fairlane, Torino, Comet & Cyclone non Ford Rear Axle Assembly Identification - Page 01 . Since the "Limited slip" or Locking rear end Hypoid offset is the distance between the centerline of the pinion and the centerline of the ring gear. control arm mount. Gross Vehicle Weight ( GVW ) would found in the trucks up to around 1982. The 7.5" rear end is also flat on top and bottom. 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. bearings, 28 and 31 splines, 57-68 passenger car and 1/2 ton truck - medium duty, stronger than Mustang The axle identification tag is located at about the 3 oclock position under the third-member mounting nut when you are looking straight at the front of the axle. This was offered on the 1960 F-100 truck. This includes the Center Case, the Pinion gear, the ring gear, and the differential or spool. Are reviews modified or monitored before being published? 1957 no dimples, flat center band up the center of the rear cover, bottom drain plug. If your vehicle has a Limited Slip Differential, it will be noted as Limited Slip. The engines flexplate is a critical part to transferring power to your drivetrain. Variations Save my name, email, and website in this browser for the next time I comment. Both standard and W-series cases are made out of gray cast iron. nickel content and better casting than the earlier single ribbed cases it housings appeared in either 1966 or 1967 with the familiar "Hump" Since the "Limited slip" or Locking rear end When measuring from the top left bolt to the bottom left bolt, the 8.8" rear end will measure 11" from bolt to bolt. The additional straddle mount pocket bearing provides additional support to the pinion head during high-torque events. . Find your transmission and rear gear multiplier below. The tubes do not have any welds, and you just see the witness marks of the parting line for the dies on the tubes. more plentiful starting in the early 1970's, many of the units found today These labels have a specific code that is similar to the axle code on the 9-inch axles. tubes with flat tops, 1969-1977 Galaxies (coils), Lincolns (coils), and late pickups (leaf)- 3.25 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. Its called a 9 inch because the ring gear measures 9 inches. Enter the required Overall Width, Pinion Offset (location), Brake Space and Drum/Rotor thickness to find axle length and housing width. Your email address will not be published. Refer to the Axle Ratio table to determine your rear axle ratio and Limited Slip. 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!. 4. Before you embark on the rebuild and start scouring local scrap yards and online websites, it will be helpful to understand what to look for and what to avoid in these axles. also received the larger axle bearings housings. When you buy through our links, we may get a commission. some 302 4V cars with optional gear ratios). Select the Towing Guide for your vehicle's model year. 8300 N. Austin Ave Morton Grove, IL 60053 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 Ford Mustang and Thunderbird used this style for a few model years. Axle Size/Strength Chart; Explained Videos; Tech Articles; 9-Inch Ford. The code, 4L11, tells us that it is a 4.11:1 ratio with a limited-slip or Traction-Lok differential. 70's. 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. Again, the overall first-gear ratio with the TH400 and 4.10:1 rear gear would be 10.168:1. Using the Ford Axle code chart, you will get to negate all these issues with ease. Produced from 1957 to 1987 by the Ford Motor Company, it was used in full size . At this width, many were used in street rod applications without modifi cation. 3. by Ford exist in the size of the outer axle bearings in the housings and thanks. The Ford 9 inch rear end is one of the most popular axles in automotive history. Generally, aftermarket shafts have to be purchased Comet that has had a HIPO SMALL block with 31-splines and a locker. Well help you determine the correct flexplate for your Chevy engine in this buyers guide. 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 Spring perches must be cut and re-welded in order 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. 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 . housings. I guess this helps add to the splendor of the vehicle. applications due to the demise of most performance engine options in the This roadster sounds amazing, goes hard and turns heads wherever it goes. Original gear ratios range between 2.79:1 and 5.43:1, and aftermarket replacement gears are available for many ratios as well. 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. The third member supports all of the gears and bearings, which allows for easier gear ratio swaps if you have multiple third members. . The magnesium addition causes the grain structure to change from flakes to nodules and thus the name nodular iron. . This is 2.25 inches for the Ford 9-inch and 1.5 inches for the 8.8-inch axle. The smaller 8-inch just cannot handle the abuse as its bigger brother can. These tags were not that informativeon the early units, so from 1957 to 1962 the tag just referenced axle ratio. 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. 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. These tags provided information for the service technicians but wasnt that important for the vehicle assembly plants. diameter bolt circle, 1967-1973 Torinos, Rancheros, Fairlanes 59.25 inches or pattern in most cases differed from the car, and due to the bearing size But the 9" is better in a couple respects: It's much lighter than a Dana 60. This bearing and the casting structure surrounding it need to be carefully inspected as this is a common area for cracks. for it. Rhodes Race Cars Unwelded Fabricated Rear End Housing Ford 9 in. wheel drives) right up until about 1982, these housings are by far the 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 It has been said that it has a higher Housing end bolt patterns can be confirmed on the bottom of the axle order form. 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. The Fora platform includes forum software by XenForo. This custom axle tag was obviously hand cut as evidenced by the sharp tin-snipped-looking ends and includes DSO, for Dealer Special Order. Ranger Keep in We offer a guide to follow when selecting a new set of brake pads for your race or street car. 66-71 Fairlanes, Torinos, Montegos, Comets, and other Ford intermediates with big blocks. 1. For Example: 235/45ZR-17 (235 x 0.45 x 2 25.4) + 17 = 25.327" And here's a formula that you can use to calculate your vehicle's rear axle gear ratio: RING GEAR TOOTH COUNT PINION GEAR TOOTH COUNT = GEAR RATIO. The Maverick 8" or Ranger 7.5 and 8.8 are good options. The top line typically starts with a three-digit axle model code (or the prefix of the part number), followed by a dash, and then thesuffix. the Broncos from 1966 to 1977, they stayed with the 28-spline units. The N cases had two vertical ribs, three horizontal ribs, and a machined-in fill plug. 76-77 large bearing. Theres an easy way to tell an 8-inch apart from a 9-inch. If you need the Rear Axle Ratio for a vehicle produced before 2008, contact ourCustomer Relationship Center via Chat or call us at 800-392-3673. shafts. With their high-volume production, the two biggest quality problems were leaks from poor welds and poor alignment of the housings. carriers both, as well as with the spline count on the axle shafts. housings also evolved over the years: The Ford trucks and cars from 1968 onwards are equipped with the Ford Axle codes, which are clearly indicated on the certification plate. This is a relatively common issue on these housings. Any Ford 9" carrier will fit, as long as it has a fill plug on the side. The axle code in our example, H9, has a specific meaning. There may be other labels attached to that pillar so pay attention to one that looks similar to the one below. widths I keep in mind for Mustangs are the following: small bearing housing can be differentiated from a large bearing housing GM A-Body Complete 9" Rear End Packages. This not easily accomplished with integral carrier axles, like the GM 10- and 12-bolt. The Lincoln Continental style of disc brakes use 11-inch rotors. The complete guide to master any grease gun, Battery vs. Starter vs. Alternator: How to jumpstart even the most stubborn of car. Cost and complexity are two. Many companies, such as Currie Enterprises, Mark Williams Enterprises, Moser Engineering,and Strange Engineering, reproduce this design today. The small are 2.835" or just under 3" and the large are 3.150" or just over 3". Most 1972 and earlier 31-tooth spline shafts can be shortened and 1973 and later versions typically cannot be resplined. With 568 Ford 9 Inch Parts for sale, you're sure to find the ideal parts . There may be a second dash and more numbers and letters on the top row if there are specifics that are unique for interchange information. The later Also note there isn't a cover on the rear like most axles. The exception is the 2002-2003 Ford Explorer Sport which still used the solid rear 8.8-Inch axle. To determine the axle ratioof your vehicle, locate thetwo-digitaxle code first, then use your vehicle'stowing guide to find the axle ratio that corresponds to that code. About | Contact | Terms | Privacy. We can teach you some of the major differences between the Ford and GM-style T5 Flathead transmission adapter kits. medianet_crid = "364974658"; 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. 28 spline axles are tapered and cannot be shortened and re-splined. These have a C4AW-4025-B casting part number next to the adjuster nut. There is a gear ratio stamped on the tag. *** SELECT GEAR RATIO FOR PRICE *** Categories. 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. If you liked this article you will LOVE the full book. 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. 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. The 9-inch ring and pinion is front-loaded into the rear end housing. 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. While the 8.8 is similar to the 12-bolt, it isnt identical. That is your vehicles axle code. Click on the 'Submit' button to find out how you Some even consider these axles to be bulletproof. Typically with just this information, you can cross reference what you need to know about the axle. The rear-end housing has a vast amount of ford 9-inch gear ratios available. But it will also use more fuel in all situations because the engine's rpm will be higher. For example: same width, but the distance between spring perches is different between The 8-inch was introduced in 1962 and is found in many lower performance Fairlanes, Mustangs, Falcons, Comets, Cougars, and Pintos, just to name a few of the applications. 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 most 74-75 medium duty large bearing, and. The leaking weld area is then ground down and a MIG or TIG welder is used for the repair. The Ford 9-inch is an automobile axle manufactured by Ford Motor Company.It is known as one of the most popular axles in automotive history. Mustangs 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. The 1960s to 1967s still retain the dimples but also have an oil level plug in the back cover. pattern in most cases differed from the car, and due to the bearing size 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. The case 65-66 Mustang = 57.25 inches. * Pro Gears are specifically designed for drag race only. In most cases, the tag has been lost. can tell this is a 9-inch from the removable carrier on the front. The Now that you have identified the axle code, let us know the axle ratio. GM Chevy S10 82-04 Complete 9" Rear End Package. When it comes down to actual shafts as well, since the truck lug Our expert customer support technicians are available Monday through Friday from 7:00 a.m. until 7:00 p.m., CST. Here is an example of 11 x 2-inch drums brakes with the small bearing size on the left and the large Torino style on the right. 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. This is a major advantage compared to other rear axle systems because disassembly is faster and more convenient. The heat treated aluminum alloy well suited to absorb high impact shock loads. Any sufficiently advanced technology is indistinguishable from magic . more plentiful starting in the early 1970's, many of the units found today 77-81 Lincoln Versailles. Gear Ratios Drag Strip Performance - 1/8 Mile Horsepower Requirements from MPH - 1/8 Mile Horsepower Requirements from ET - 1/8 Mile ET from MPH - MPH - Km/H in 1/4 Mile using Horsepower Leaf Spring: The Similarities And Differences, Front Axle Of A Car: Types, Functions, And Replacement, CV Axle Boot: Overview, Signs, And Replacement. 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. There are even different pinion cartridges that have been available from the various production years and models for this axle. 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). with 3/8" fine thread, while the larger bearing use 11/16" Now you can see the C4AW-4025-B part number on the lower left unit, which verifies it as a nodular unit. "Pro" gears are designed specifically for drag racing. There are four versions of the nodular iron third members that were produced from the factory. replaced, and that is why it remained in use for so long. Along with the many different brake and wheel end varieties, many different styles of axle shaft ends were manufactured. always looking for good content to share with Roadkill Customs has evolved from local hot rod shop to online how-to magazine for budget-minded do-it-yourself hot rod builders and enthusiasts. If the socket fits (as shown in our photo below) it is a Ford 8-inch housing. The same applies to vehicles with codes containing numbers alone. and 429CJ cars.From what I have seen don't expect to find them in 390 or Mustangs and Fairlanes. smooth backside. mind as mentioned, the Fairlane spring perch distances were not the same by the size of the nuts and thread used to retain the brake backing plates trucks varied more, early half ton trucks got the 28-spline axles and The desirable N-style, nodular-iron gear cases are available in four different versions. The last set of numbers is the vehicle plant code. It has a square design with four rounded corners and ten bolts. GM F-Body Complete 9" Rear End Packages. Axles Tubes Are 4-Inches. The 9-inch third-member bottom fasteners, on the left, can only be accessed with a wrench. This chart references the connection between the month codes and the actual month. You will need to look at the Ford axle code chart to replace your Ford rear-end axle parts. Ford 9.5 PRO GEAR* *PRO GEAR RATIO PART NO. FMX, three-speed, automatic. This combined with easy assembly makes it popular for fine-tuning a rear gear for any particular application. The 8.5- and 8.8-inch gears have even found themselves in the independent-carrier-style axles. Due to factors beyond the control of WJ Handy Dad, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. There are a few exceptions that you will see in the Ford Axle code chart. Axle code. Calculate your differential gear ratio from RPM, tire size and desired MPH. The bearing cups are in the pinion cartridge and the third bearing trunnion roller bearing is located in the gear case. Careful aftermarket shops and their stringent attention to repairing these housings are able to correct many of these issues. It was not the only axle used, but was by far one of them. housings. i.e. The first number is the last digit of the model year of the decade, the next digit is a letter and represents the month (A is for January, B is for February, and so on), and the last two digits represent the day of the month. truck housings received even beefier center carrier housings and tubes, It is a column with the label AXLE on top and the Axle Code at the bottom. socket size and 7/16" fine thread. Install Kits and Gears Sets Listed By Rear End. So again, unlike the GM and Dana axles that require a unique differential with different ratios, the Ford 8.8-inch differential is common across all of the ring-and-pinion ratios. You can use the social sharing buttons to the left, or copy and paste the website link: https://www.diyford.com/ford-axle-history-identification-ford-differentials/. (often referred to as a "POSI") came to be a popular option and Because of the long production history of this axle, many variants are available. differences, 28-spline car axle shafts are much more abundant than the if not I have other 9" info archived I can post. - Rod Stroke Ratio - Stroke Size Rear Gear Requirements - Rear End Gear Ratio Needed - Speed from RPM, Rear & Trans. and Fairlane axle housings are often grouped together because they are the Call 800.979.0122, 7am-10pm, everyday. type, 28 and 31 splines, Ranchero/Torino - heavy duty thick wall housing, 3.25 inch diameter axle Note: Rear axle ratios are available for 2008 and newer models. It is a banjo-style axle as is the 8-inch. shafts. These axles did have metal axle tags similar to the 9-inch axles but they were slowly phased out as vehicle programs were updated.
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