some 302 4V cars with optional gear ratios). Note: Rear axle ratios are available for 2008 and newer models. 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. This is a typical axle tag that has been removed from the third member. Find the two-digit code under AXLE. 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. There were many instances of cuts and scratches from the thin steel tags sticking up on the axles. 2. These axles had a stout 2.25-inch ring gear offset as compared to a 1.5-inch ring gear offset of the later 8.8-inch axle. Exceptions to this were the ultra Hi performance Boss 302s, With the chart in hand, locate your vehicles axle code on the axle code column. First, you need to understand some fundamentals of the Ford axles to help guide your quest. inch diameter all the way to the backing plate, coil housings have upper You will also learn how to identify the codes in Ford vehicles. In most cases, the tag has been lost. Some of the heavier cars like the Galaxies also received the Details: Motive Gear . differences, 28-spline car axle shafts are much more abundant than the I reference these axles based on the ring gear nominal outside diameter in inches. Here is a quick visual summary: The 1957 housings do not have dimples on them and have an oil drain plug. We can teach you some of the major differences between the Ford and GM-style T5 Flathead transmission adapter kits. 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. For example: The tag will say: 350 for 3.50:1 ring and pinion gear ratio. always looking for good content to share with tubes with flat tops, 1969-1977 Galaxies (coils), Lincolns (coils), and late pickups (leaf)- 3.25 The leaking weld area is then ground down and a MIG or TIG welder is used for the repair. Most of the time, the differences are in shock and spring mounting brackets and, of course, brake hardware. The answer lies in several of the Ford 9-inchs design aspects, starting with the Ford 9 inch gears. Calculate your differential gear ratio from RPM, tire size and desired MPH. Like the H in our case shows a car with a limited-slip differential. 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. 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. These used what is referred to as a Standard Ford 9 inch gear sets are primarily used in street applications. For example, Ford says the 2018 F-350 Super Duty 4x2 regular cab pickup equipped with the 6.2-liter . The same applies to vehicles with codes containing numbers alone. GM Tri 5 55-57 Chevy Complete 9" Rear End Package. The Maverick 8" or Ranger 7.5 and 8.8 are good options. 9-inch complete rear axle is approximately 35 pounds heavier than an 8.8 rear axle with approximately the same components. weakest and had abrupt ending but welded carrier centers to tubes and a Well show you what to look for in this buyers guide. 1967-1973 Mustang axles can be identified by wheel flange: Oval hole = 28 splines; Two large holes and counter-sunk center = 31 splines. So dont be surprised that most of these axles leak from the welds. 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. In 1963, Ford includedmore information. 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. CLICK HERE to see a complete listing of front axle codes). narrowed rear ends due to the added strength in the middle. in the backside middle and stronger tubes. 65-66 Mustang = 57.25 inches. The WAR, WAA, and WAB cases have the same ribbing as the N case, but are missing the ever important N feature. 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. 56" 66-71 Fairlanes, Torinos, Montegos, Comets, and other Ford intermediates with big blocks. One exception to this was station wagons-cars with 351 and up engines received 9-inch units - as did 31-spline carriers and axle shafts. WJ Handy Dad recommends safe practices when working on vehicles/homes and or with tools seen or implied in this video. The 8.5- and 8.8-inch gears have even found themselves in the independent-carrier-style axles. many half ton trucks continued to utilize the 9-inch (both 2 wheel & 4 4. The exception is the 2002-2003 Ford Explorer Sport which still used the solid rear 8.8-Inch axle. 9-Inch Standard Ring And Pinion Gear Sets (3.00 to 6.50 Ratios) $240.00. I remember that the car had a bad pinion bearing and when I took the rear end apart the pinion would just barely fit through the pinion support hole in the case. This case looked like a nodular unit from the front regarding rib structure but did not have the N on it. The later Ironically, 8.0-inch independent carriers were made in cast iron. There are even different pinion cartridges that have been available from the various production years and models for this axle. The unit on the top left seems to be nodular iron but requires a little more investigation to verify. for 1967-1970 (same as 1966-1969 Fairlane, Torino, Comet & Cyclone non 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 your vehicle has a Limited Slip Differential, it will be noted as Limited Slip. 1957 no dimples, flat center band up the center of the rear cover, bottom drain plug. The last set of digits on the top row on the right side is the date code. Gear Ratios - RPM from Speed, Rear & Trans. 52" Rhodes Race Cars Unwelded Fabricated Rear End Housing Ford 9 in. 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!. I guess this helps add to the splendor of the vehicle. . if one wants to use a 31-spline truck carrier in a car. Our Mopar flexplate buyers guide will help. of course most desirable is the N case, first used on the 427 Galaxies The N cases had two vertical ribs, three horizontal ribs, and a machined-in fill plug. The engines flexplate is a critical part to transferring power to your drivetrain. For a Ford 9 inch rear end, swapping gears is fairly easy as it has a removable third member. There are several reasons for this. Find your transmission and rear gear multiplier below. applications due to the demise of most performance engine options in the housings appeared in either 1966 or 1967 with the familiar "Hump" differences, 28-spline car axle shafts are much more abundant than the The case pattern (same as older Jeep), a 65-inch width at the wheel mounting surfaces, Ford Axle codes help identify the vehicles positraction as well as an axle to gear ratio. (The third digit of the axle code identifies the ratio and/or capacity of the front axle, if applicable. . You can install a true 9-inch gear in these housings as well. 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! This combined with easy assembly makes it popular for fine-tuning a rear gear for any particular application. Here are the internal sides of the same three units. The 9-inch third-member bottom fasteners, on the left, can only be accessed with a wrench. This is because the supply is limited to 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. Pairing your vehicle with the wrong axle components will not only damage your vehicle but cost you a lot down the line. 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 Daytona- style cartridge allows for a larger pinion head bearing when compared to the standard pinion cartridge. Since 2011, V6 and V8 Mustangs have used Ford's 8.8" rear end, but before that many used a 7.5" rear. Repairing a twisted brake or throttle cable with a simple homemade tool in just minutes Easy and functional. 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 . Here is a down-and-dirty way of picking the best gearing for a particular car from three choices: 3.07:1 final drive with a wide-ratio transmission, a 3.07:1 final drive with a close-ratio transmission, and a 3.36:1 final drive with a close-ratio transmission. The rear-end housing has a vast amount of ford 9-inch gear ratios available. carriers both, as well as with the spline count on the axle shafts. The primary purpose of this plate is to show you if your vehicle is equipped with a limited-slip to rear-end differential. 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. We stand behind our products with some of the smartest technicians in the industry. dimples. The entire S550 Mustang generation has had 4, due in part to the limited-slip differential option. Performance Front & Rearends GM Vehicles This particular pinion cartridge is well reinforced and much stronger than the stock production cartridge. The other identification information, 9, as observed from the chart, indicates a 3.55 gear ratio of the Ford F-150. Note the weld on the top of the axle center section along with the oval-shaped dimples on the rear section. The first two digits of the axle code identify the ratio and capacity of the rear axle. CASE" Gross Vehicle Weight ( GVW ) would pattern in most cases differed from the car, and due to the bearing size thanks. Note the ring diameter cast into the housing above the pinion. Axle Ratio : Axle Ratio : Diesel: 5.13: 4.10: 3.55: Gas: 4.10: 3.55 : Trans Ratio: . Measuring from axle flange to axle flange (measurement A in the diagram below) will give you total axle housing width. popular early swap being the 1957-1959 Ford for the 1965/1966 Mustang. With so many better performing aftermarket options today, there is no reason to use these marginal brakes. small bearing housing can be differentiated from a large bearing housing The Ford Explorer uses an independentstyle Carrier made out of cast aluminum. See all 20 photos. It also has a 9-inch ring gear. 56" most abundant. Axle 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. Now you can see the C4AW-4025-B part number on the lower left unit, which verifies it as a nodular unit. These variations include different-size drum brakes, disc brakes, and wheel hub arrangements. 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: 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. . Some of the heavier cars like the Galaxies also received the Our experts will help you find the correct ring and pinion set for your particular application. and 429CJ cars.From what I have seen don't expect to find them in 390 or it was very complete. Ford Differential Axle Codes. Ratings and reviews are provided by customers who have either purchased a vehicle or visited a dealership for service. Call us at (864) 843-9275. inches The 9-inch ring and pinion is front-loaded into the rear end housing. The 8-inch also was only available with 28-tooth axle shafts. This is a major advantage compared to other rear axle systems because disassembly is faster and more convenient. Ford personnel and/or dealership personnel cannot modify or remove reviews. shafts. . Keep in While the 1350 u-joints provide enough strength to handle most demanding of applications, Strange also offers a variety of yokes with1480 u-joints for the ultimate in driveline strength and dependability. Unless you are building a Pinto or straight six-cylinder vehicle, you want to avoid it. Because of the long production history of this axle, many variants are available. While the larger offset makes the ring and pinion gears stronger, the additional sliding of the gear teeth creates more heat in the axle. There is a machined roller bearing race on the pinion head portion that points at the differential opposite thetapered bearing races. Note the two lower bolts at 6 and 7 oclock have straight access with a socket. The 9-inchs very large pinion offset of 2.25 inches requires the pinion to be straddle mounted, which refers to the fact the pinion head has bearings that straddle it on either side. Along with the many different brake and wheel end varieties, many different styles of axle shaft ends were manufactured. actual car posi units, which were primarily 28-spline carriers, can be Differentials take the power from the rear axle and transfer it to the rear wheels by way of special gears. The BOM will identify the model number, the gear ratio, the type of differential, and all component parts. Power is transmitted from the transmission to rear end 1:1 in high gear. Generally most cars received the small axle bearings and 28-spline axle 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. Over several generations of small block Chevy (and big block Chevy) engines there have been several changes that dictate what flexplate works with them. Install Kits and Gears Sets Listed By Rear End. A copy of the Ford Axle Code Chart is linked below in this article. For example: but the link i was refering to listed codes by year and model. 70's. Axle Ratio = (RPM X Tire Size)/ (Speed (MPH) X 336) Example 4.88 = (2881 X 37)/ (65 X 336) This combined with easy assembly makes it popular for fine-tuning a rear gear for any particular application. It was also used in the 1983-1996 full-size Bronco, and E150 Econoline . The Final Drive Ratio shows you how many times the engine turns for one complete turn of the tires. The 1966 Mustang had 14 possible rear gear ratio/differential combinations. Mismatching issues are a big problem when it comes to automotive repairs. Also note there isn't a cover on the rear like most axles. duty.And believe it or not, they were also used in some FE equipped Ford Axle code is a combination of letters and numbers stamped on a small plate/tag attached to your vehicles rear axle. How do I find the Axle Ratio and Limited Slip? Automotive Technical and Reference Information, Project Cars, Trucks and Salvage Vehicles For Sale, 1967-1970 Mustang, Fairlane, Comet, Cougar, 1967-1971 Comet, Cougar, Mustang, Fairlane, 1967-1973 Mustang, Torino, Ranchero, Fairlane, 1967-1973 medium and big block Mustang and Cougar, 1966-1971 Fairlane, Torino, Montego, Comet, and other Fords with big-block engines, 1977-1981 Lincoln Versailles and Trucks . 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 . 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. How To Identify 9 Inch Ford Housings Chart via Speedway Motors. The middle number is the ring gear diameter in inches, typically an 8 or 9. Visit the RV & Trailer Towing Guides page on the Ford fleet website. 67-70 Mustang = 59.25 inches. The 9-inch housing's center section will not allow the socket to clear, and . FORD FINAL DRIVE RATIOS. This custom axle tag was obviously hand cut as evidenced by the sharp tin-snipped-looking ends and includes DSO, for Dealer Special Order. i.e. them. 800-646-6718. Ford 9 Inch Rear End Gear Ratios Chart1969 impala ss 427 4 speed. Comet that has had a HIPO SMALL block with 31-splines and a locker. Any sufficiently advanced technology is indistinguishable from magic . 1960-1967 two dimples, flat center band, oil level hole in the back cover. C-6, three-speed, automatic. type, 28 and 31 splines, Ranchero/Torino - heavy duty thick wall housing, 3.25 inch diameter axle People tend to be drawn to it like a magnet. You will need to look at the Ford axle code chart to replace your Ford rear-end axle parts. GM G-body 78-87 Complete 9" Rear End Package. The The date code on this axle tag is 7AC, and it corresponds to the 7th year, 1st month (January), and 3rd day. carriers both, as well as with the spline count on the axle shafts. What Is Car Battery Voltage And Why Is It Important? Read this first! Tip: To search theTowing Guide, press CTRL + Fto open a search box in your browser. Width: all measurements are flange to flange. 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! But 10.168 / 4.70 (to determine the equivalent rear-gear ratio) equals 2.16:1, which is not realistic. Our expert customer support technicians are available Monday through Friday from 7:00 a.m. until 7:00 p.m., CST. Most of the later trucks 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 Mustang Shelby GT housing is an easy one to spot, albeit rare, because it has extreme tapering of the axle tubes at the ends. How to Narrow a 9 Inch Ford Rear End. control arm mount. and trucks throughout the 1970s. The Ford 9-inch can be found under 1974-1986 F-150s and 1978-1986 Broncos. for the swap to be performed. Original gear ratios range between 2.79:1 and 5.43:1, and aftermarket replacement gears are available for many ratios as well. Four of the 11 inch-diameter versions are pictured: 1 inches (top left), 2 inches (top right), 2 inches (bottom left), and 3 inches (bottom right). You are looking for a nodular iron case, with its telltale N cast into the front or inside wall. * Pro Gears are specifically designed for drag race only. threatening to harm employees or others), Lack of adequate text (e.g., symbols, emojis and random letters), Reviews on the product and not the customers Sales or Service experience. These tags are typically quite beat up, twisted, and rusted over the years. The same applies to vehicles with codes containing numbers alone. 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. to the housing, the small bearing housings use 9/16" socket size nuts
