i.e. Interestingly, the Ford axle uses the exact same size of tapered roller bearings as the GM 12-bolt. How do I find the Axle Ratio and Limited Slip? One exception to this was Axles Tubes Are 4-Inches. station wagons-cars with 351 and up engines received 9-inch units - as did 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 answer lies in several of the Ford 9-inchs design aspects, starting with the Ford 9 inch gears. The tags were replaced with adhesive labels that are placed around the axle tube near the brake and wheel end. socket size and 7/16" fine thread. shafts. Our experts will help you find the correct ring and pinion set for your particular application. weakest and had abrupt ending but welded carrier centers to tubes and a the axle from around the 1957 model year right up until the early 1980s The BOM will identify the model number, the gear ratio, the type of differential, and all component parts. and trucks throughout the 1970s. version of the case came into use in 1967 or in subsequent years, but it carriers both, as well as with the spline count on the axle shafts. The small are 2.835" or just under 3" and the large are 3.150" or just over 3". It was not the only axle used, but was by far one of Many companies, such as Currie Enterprises, Mark Williams Enterprises, Moser Engineering,and Strange Engineering, reproduce this design today. The later For example, Ford says the 2018 F-350 Super Duty 4x2 regular cab pickup equipped with the 6.2-liter . 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. With so many better performing aftermarket options today, there is no reason to use these marginal brakes. (See Chapter 8 for how to install a 9-inch in a classic 1957 Chevy Bel Air as a performance upgrade.). You can install a true 9-inch gear in these housings as well. 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. Many aftermarket companies produce 9 Ford equivalent rear axles for the drag racing and hot rod industry. The close-ratio and C4 289HP trans were mated to the 3.50, and occasionally to the 3.89 and 4.11. It is the one most commonly Of course, if your budget allows, you can purchase an aftermarket iron case that is stronger than any factory case. 1. version of the case came into use in 1967 or in subsequent years, but it But the 9" is better in a couple respects: It's much lighter than a Dana 60. Spring perches must be cut and re-welded in order 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. Builder V8 Billys 1966 Ford Fairlane Twin Turbo 427 RestoMod was built for Street and Strip. axleshafts. Gross Vehicle Weight ( GVW ) would medianet_height = "250"; housings also evolved over the years: The These labels have a specific code that is similar to the axle code on the 9-inch axles. The axle was developed to replace the Ford 9-inch axle.This axle is still in production today for a variety of Ford vehicles. Calculate your differential gear ratio from RPM, tire size and desired MPH. I have a '50 Club Coupe and have experienced this first hand. The image below shows the Safety Label of a Ford Truck. These tags were not that informativeon the early units, so from 1957 to 1962 the tag just referenced axle ratio. to the housing, the small bearing housings use 9/16" socket size nuts GM G-body 78-87 Complete 9" Rear End Package. There is a gear ratio stamped on the tag. The Ford Mustang and Thunderbird used this style for a few model years. 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. for the swap to be performed. Read this first! middle of case it is a good IRON type IF in the very center of this case Now that you have identified the axle code, let us know the axle ratio. 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. 31-spline axles and carriers for most trucks. duty.And believe it or not, they were also used in some FE equipped Ford $(document).ready( function () {$('#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. Only the N-series cases are made out of the stronger, more desirable, nodular iron. All the Galaxies I have seen from throughout the 1960s same width, but the distance between spring perches is different between While the iron is molten, magnesium is added to increase the shear strength of the alloy. if not I have other 9" info archived I can post. found in the trucks up to around 1982. Locate the Safety Compliance Certification Label on the driver's side front or rear door panel. The Ford 9 inch housing is a semi-floating, drop-out axle. * Pro Gears are specifically designed for drag race only. Note: Rear axle ratios are available for 2008 and newer models. It is as easy to cut down as any other 8 or 9 inch Ford axel. When measuring from the top left bolt to the bottom left bolt, the 8.8" rear end will measure 11" from bolt to bolt. See all 20 photos. The WAR, WAA, and WAB cases have the same ribbing as the N case, but are missing the ever important N feature. Richmond Tech Support. Ford Axle code identification, Read more: Front Axle Of A Car: Types, Functions, And Replacement. Axles were similar to the Ford 9-inch 28-spline units. Later A 2-inch version is not shown. 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/. I reference these axles based on the ring gear nominal outside diameter in inches. inch diameter all the way to the backing plate, coil housings have upper Torsion Axle Vs. The first two digits of the axle code identify the ratio and capacity of the rear axle. the few cars and early Broncos (and some early trucks) which received The Ford 9-inch is the most desirable drag racing rear end because it has a removable carrier, which allows quick rear end changes. Because of the long production history of this axle, many variants are available. Some have only one access hole for the backing plate bolts, while others have three. socket size and 7/16" fine thread. 8. 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. In this chapter I share a summary of decades of work on these axles. Most have the two driving holes for the manufacturing process while one has a more square looking drive end. much more difficult to locate. features the legendary Ford 9-inch ring and pinion strength, 5-on-5.5 lug The 1960s to 1967s still retain the dimples but also have an oil level plug in the back cover. The 8-inch also was only available with 28-tooth axle shafts. the few cars and early Broncos (and some early trucks) which received for 1965-1966 (the same width as 1964-1965 Falcons and 1962-1965 Fairlanes "N housings appeared in either 1966 or 1967 with the familiar "Hump" 74-75 medium duty large bearing, and. Again, the overall first-gear ratio with the TH400 and 4.10:1 rear gear would be 10.168:1. and trucks throughout the 1970s. 6. The Ford Axle code will also help you identify your particular models engine capacity and the year/vehicle make. The case The entire S550 Mustang generation has had 4, due in part to the limited-slip differential option. thanks. (It was later used for pick-ups and Broncos.) CLICK HERE to see a complete listing of front axle codes). The Ford 9 inch rear end is one of the most popular axles in automotive history. 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WJ Handy Dad assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Some even consider these axles to be bulletproof. There are three versions with external Ns cast in; note the more curved style on the top right. If you are looking for an N case or think that you have found one of these desirable axles, make certain to examine it closely. 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. Ford 9 inch Gears. Come join the discussion about popular models such as the Mustang, Galaxie, Falcon, Fairlane, Torino, Shelby and many more! If the socket fits (as shown in our photo below) it is a Ford 8-inch housing. The aftermarket has responded to this by offering a plethora of ratios ranging from 2.91 to 6.50:1. Our example is going to assume a 6000 rpm redline and 26-inch-diameter tires. There are quite a few companies making Ford 9-inch housings to fi t just about any muscle car out there, including non- Ford vehicles. it was very complete. Typically with just this information, you can cross reference what you need to know about the axle. The "rough" The last set of digits on the top row on the right side is the date code. This is a major advantage compared to other rear axle systems because disassembly is faster and more convenient. If measuring the drum-to-drum distance, add .200-inch to these values. This will ensure that the correct replacement parts are purchased or salvaged from a junkyard to be used in the vehicle. widths I keep in mind for Mustangs are the following: 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 . 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. 9-inch complete rear axle is approximately 35 pounds heavier than an 8.8 rear axle with approximately the same components. There may be other labels attached to that pillar so pay attention to one that looks similar to the one below. smooth backside. I had an early '70's Lincoln with a 460 come into the shop one time and it had the 2.33:1 ratio in a 9 inch. for the 1971-1973 Mustangs - cars with 351 engines and up receiving the 9-inch other Ford Ranger enthusiasts. to the housing, the small bearing housings use 9/16" socket size nuts Axle Ratio = (RPM X Tire Size)/ (Speed (MPH) X 336) Example 4.88 = (2881 X 37)/ (65 X 336) in cars and trucks. It is an 8 inch rear axel so many parts interchange with many other years Fords and Mercury's using an 8 inch axel. Mustangs and Fairlanes. People have been climbing around scrap yards for years to find the best examples of the 9-inch axle. It is a column with the label AXLE on top and the Axle Code at the bottom. 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 . The bottom line begins with the ratio being the first set of numbers. pattern in most cases differed from the car, and due to the bearing size The bearing cups are in the pinion cartridge and the third bearing trunnion roller bearing is located in the gear case. Both axles share a common design and are often referred to as banjo style or third-member style. You are looking for a nodular iron case, with its telltale N cast into the front or inside wall. Calculators. This sensor is for the anti-lock brake system. Ratings and reviews are provided by customers who have either purchased a vehicle or visited a dealership for service. It has more ground clearance than a Dana 60. This chart applies to all Ford non-overdirve transmissions, manual and automatic. It has a square design with four rounded corners and ten bolts. applications due to the demise of most performance engine options in the 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. None of which changes the strength of the axle shaft. 800-646-6718. Ring Gear/Pinion Gear Teeth to Gear Ratio. much more difficult to locate. Have Produced from 1957 to 1987 by the Ford Motor Company, it was used in full size . by Ford exist in the size of the outer axle bearings in the housings and Like most Ford axles, the 9-inch has a single hypoid ring gear mounting distance, so, unlike the Dana and GM axles that require unique differential carriers based on ratio, a single differential carrier works with all of the Ford ratios. differences, 28-spline car axle shafts are much more abundant than the Notice the 8.0-inch ring gear diameter cast into the rear cover below the fill plug. 1967-1973 Mustang axles can be identified by wheel flange: Oval hole = 28 splines; Two large holes and counter-sunk center = 31 splines. 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. (narrowest 9-inch housing), 1966-1977 Bronco 58 inches but has 5-on-5 1/2 inch This custom axle tag was obviously hand cut as evidenced by the sharp tin-snipped-looking ends and includes DSO, for Dealer Special Order. Using the correct part is imperative to engine longevity and proper drivetrain assembly. The Ford 9-inch has a reputation as a durable axle that can transmit enormous torque, and this is rightfully deserved. This is an example of the only Ford 9-inch version that utilized one-piece tubes. narrowed rear ends due to the added strength in the middle. There is a machined roller bearing race on the pinion head portion that points at the differential opposite thetapered bearing races. Ford Axle codes help identify the vehicles positraction as well as an axle to gear ratio. When it comes down to actual shafts as well, since the truck lug Start by opening the left drivers front door. Another bonus is that the axleshafts are of equal length, so youll The primary purpose of this plate is to show you if your vehicle is equipped with a limited-slip to rear-end differential. There are a few exceptions that you will see in the Ford Axle code chart. The axle housings themselves had many different variations over time as well. Strange Engineerings heavy-duty lines of S-Series transmission and pinion yokes were designed by Strange and are manufactured from USA made high tensile strength nodular iron castings. Using this data, hopefully you can decide whether you want a 2.73, 3.08, 3.27, 3.55, 3.73, 4.10, or some other gear in your car. 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. 31-spline axles and carriers for most trucks. . JavaScript is disabled. GM F-Body Complete 9" Rear End Packages. trucks varied more, early half ton trucks got the 28-spline axles and 56" 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 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. "N Case" was no longer needed for passenger car/truck Comet that has had a HIPO SMALL block with 31-splines and a locker. I have also spent many hours in scrap yards and visiting and interviewing the experts in this field along with years of building numerous axles myself. Amateur restorer. The Ford 8.8-inch axle has the same ring gear mounting distance (see Chapter 7) for all ratios, just like the 9-inch. There are even different drum brake registers. Ironically, 8.0-inch independent carriers were made in cast iron. "Pro" gears are designed specifically for drag racing. for the 1971-1973 Mustangs - cars with 351 engines and up receiving the 9-inch 65-66 Mustang = 57.25 inches. 66-71 Fairlanes, Torinos, Montegos, Comets, and other Ford intermediates with big blocks. Axle Ratio : Axle Ratio : Diesel: 5.13: 4.10: 3.55: Gas: 4.10: 3.55 : Trans Ratio: . 66-75 large bearing, 3. Ford improved tooth contact of the Ford 9 inch gears by locating its pinion gear lower on the ring gear. Ford 9 inch axles different from other high-performance rear endsare how the ring and pinion gear is accessed. If the case has two verticle RIBS ,from top to Paint gmc dupont charts reference chart 1956 1959. With the chart in hand, locate your vehicles axle code on the axle code column. The Fora platform includes forum software by XenForo. It The most You will also learn how to identify the codes in Ford vehicles. 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. This bearing is one of the reasons that the 9-inch has the reputation for being bulletproof. at car swap meets and shows are the units pulled from trucks with the 2. - Rod Stroke Ratio - Stroke Size Rear Gear Requirements - Rear End Gear Ratio Needed - Speed from RPM, Rear & Trans. Install Kits and Gears Sets Listed By Rear End. 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. 76-77 large bearing. If the socket fits (as shown in our photo below) it is a Ford 8-inch housing. medianet_crid = "364974658"; nickel content and better casting than the earlier single ribbed cases it You can do this by multiplying by the gear ratio. always looking for good content to share with The Lincoln LS and Jaguar S-type were equipped with an 8-inch, castaluminum, independent- style carrier. by Ford exist in the size of the outer axle bearings in the housings and Written by Joe Palazzolo and Republished with Permission of CarTech Inc. The information on the plate includes: The purpose of the axle code is to help identify the specifics of a particular vehicles rear-end axle. Theres an easy way to tell an 8-inch apart from a 9-inch. I put together a whole collection of housings and third members. Find the word AXLE under the bar code. . Call 800.979.0122, 7am-10pm, everyday. It is quite strong since it was designed to handel the 260 V8 engine, the 8 inch can also be beefed up for even more power with custom racing or Hot Rod parts. 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. Ford personnel and/or dealership personnel cannot modify or remove reviews. There is a very fundamental difference between Fords 8.8- and 9-inch axles. Applications: Ford Used The Dana 70 And Dana 70HD Axles In F-350 Trucks Up To 1985.5. 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. medianet_versionId = "3111299"; The 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. It has been said that it has a higher Why is the Ford 9in rear end the go to rear axle for street and strip builds for over 70 years? 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 . the Broncos from 1966 to 1977, they stayed with the 28-spline units. Traditional BOM's are 6 digits followed by 1 or 2 digits and start with the numbers 60 or 61. if so is this what you are looking for. Ford non-overdrive transmissions include: C-4, three-speed, automatic. 8300 N. Austin Ave Morton Grove, IL 60053 The rear-end housing has a vast amount of ford 9-inch gear ratios available. Fords small block and big block engine families have their share of flexplate differences. 31-spline carriers and axle shafts. This is because the supply is limited to This is by far the most common axle used by restorers, hot rodders, customizers, and racers. Here is a picture of the milling machine cutting new spline teeth after the axle has been cut to length. in cars and trucks. 1957 . 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 . GM A-Body Complete 9" Rear End Packages. Variations Axle This not easily accomplished with integral carrier axles, like the GM 10- and 12-bolt. (final drop). Refer to the Axle Ratio table to determine your rear axle ratio and Limited Slip. Ford differential tags are very . and Fairlane axle housings are often grouped together because they are the On this particular third member, the original copper washers that were under the factory fasteners have been discarded as well. Ford intermediates with big blocks. 9-inch (cars) have a 5-on-5 bolt circle and the axles cannot be shortened. Ford 8 Ford 9: CLICK FOR MORE INFO. common carrier housing found is the C7AW-E. FMX, three-speed, automatic. Differentials take the power from the rear axle and transfer it to the rear wheels by way of special gears. around 64-65 I believe.They are most often found behind the later 428CJ It is a banjo-style axle as is the 8-inch. We're GM Tri 5 55-57 Chevy Complete 9" Rear End Package. Some of the heavier cars like the Galaxies also received the The Ford 9-inch can be found under 1974-1986 F-150s and 1978-1986 Broncos. There are 4 different sets of rear axles that would have come stock in 66-77 Broncos. With the pinion gear and differential in place, rear-end marking compound in place, and with the bearings only "snug" (just tight enough to eliminate any "play"), check the pinion depth by way of the contact pattern that can be found by the rotation of the pinion against the ring gear. Rusty but Rare 1976 Chevy K10 Sport Truck Revival! Gear Ratios - RPM from Speed, Rear & Trans. The large bearing size was available with fi ve different brake drum widths. used the 9-inch rear, regardless of engine size. For reference, this section from the Ford MPC is posted . Finding the location of this certification plate is easy. A Generally most cars received the small axle bearings and 28-spline axle The magnesium addition causes the grain structure to change from flakes to nodules and thus the name nodular iron. These have a C4AW-4025-B casting part number next to the adjuster nut. is by far the most abundant case being used in both full size Ford cars These tags provided information for the service technicians but wasnt that important for the vehicle assembly plants. With their high-volume production, the two biggest quality problems were leaks from poor welds and poor alignment of the housings. Of the four versions of the N case, three have an actual N cast into it right above the pinion cartridge. also received the larger axle bearings housings. 289 Hipo cars.The N cases went with 31 spline centers and are for rugged The Ford 8.8-inch is very similar to the General Motors (GM) 878-inch, 12-bolt axle. The housings also evolved over the years: 70's. The unit on the top left seems to be nodular iron but requires a little more investigation to verify. 52" The Maverick 8" or Ranger 7.5 and 8.8 are good options. For instance, if both the engine and transmission deliver up to 100 ft./lbs. truck housings received even beefier center carrier housings and tubes, We have a large selection of gear sets in stock and can recommend the correct . 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. Call us at (864) 843-9275. housings. It's . It's important to know the friction quality and pad size before selecting a new set of disc brake pads. In most cases, the tag has been lost. Details: Motive Gear . The GoJak wheel dolly makes moving immobile vehicles around your shop easy as place, pump, and push! Gear ratios can be quickly changed by removing the axles and driveshaft, unbolting the . The Along with the many different brake and wheel end varieties, many different styles of axle shaft ends were manufactured. Use this information at your own risk. This is 2.25 inches for the Ford 9-inch and 1.5 inches for the 8.8-inch axle. for the swap to be performed. is by far the most abundant case being used in both full size Ford cars duty.And believe it or not, they were also used in some FE equipped Ford 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 combined with easy assembly makes it popular for fine-tuning a rear gear for any particular application. The rear end width is important on shoebox Fords if you want some selection on wheels.
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