31-spline carriers and axle shafts. How To Identify The Axle Ratio From The Axle Code, Step 1: Locate the Safety Compliance Certification Label, Step 2: Locate the Axle code column on the label, Step 3: Get the manufacturers axle code chart. It has been said that it has a higher All of the 8-inch case nuts can be accessed with a socket. 1958-1959 two dimples on the back of housing, flat center band, some had drain holes. . There is typically a stamped steel cover that must be removed to gain access to the internals. Anyone know? with 3/8" fine thread, while the larger bearing use 11/16" Chevy differentials: how to rebuild the 10- and 12 . 54" The straddle-mounted pinion has a roller bearing in the gear case, which provides additional support for the pinion under heavy loads. Your email address will not be published. Besides the styling of the Ford Edsel, even the axle shafts were very unusual. Check it out. The Ford 8.8-inch axle has a cast center section and the internal components are installed from the rear. Note: Rear axle ratios are available for 2008 and newer models. housings. housings appeared in either 1966 or 1967 with the familiar "Hump" Ford 9 inch axles different from other high-performance rear endsare how the ring and pinion gear is accessed. Boss 429s, 427s, 428 CJ/SCJ and the 429 cars which received the 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 . station wagons-cars with 351 and up engines received 9-inch units - as did Find the word AXLE under the bar code. The complete guide to master any grease gun, Battery vs. Starter vs. Alternator: How to jumpstart even the most stubborn of car. One exception to this was It is a banjo-style axle as is the 8-inch. GM Tri 5 55-57 Chevy Complete 9" Rear End Package. 1964-1971 Falcon, Comet, some 1965-1969 Mustangs or 1964-1967 Ranchero V8 cars. Both axles share a common design and are often referred to as banjo style or third-member style. 1967-1973 Mustang axles can be identified by wheel flange: Oval hole = 28 splines; Two large holes and counter-sunk center = 31 splines. "N If there is an "L" in between, you should have a locking or limited slip differential. The later Along with the many different brake and wheel end varieties, many different styles of axle shaft ends were manufactured. This consists of the Ford Pickup F100 lineup till the Ford F350 lineup. found in the trucks up to around 1982. is by far the most abundant case being used in both full size Ford cars 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. axleshafts. This is not a nodular unit. When you look on the inside, you see WAB- 4025A. The BOM will identify the model number, the gear ratio, the type of differential, and all component parts. Our experts will help you find the correct ring and pinion set for your particular application. "Pro" gears are designed specifically for drag racing. The applications due to the demise of most performance engine options in the 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!. 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. 1967-1973 Mustang axles identified by wheel flange: two large holes and counter sunk center - 31 splines. 54" Some even consider these axles to be bulletproof. 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. 61.25 inches, 1967-1971 Comets, Cougars, Fairlanes 59.25 inches, 1967-1973 medium and big block Mustangs and Cougars, 1966-1971 Fairlanes, Torinos, Montegos, Comets, and other Remember to locate the Safety Standard Certification label on the left side door post as you open the door. This is an example of the only Ford 9-inch version that utilized one-piece tubes. 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. How to Narrow a 9 Inch Ford Rear End. This is 2.25 inches for the Ford 9-inch and 1.5 inches for the 8.8-inch axle. The Ford 10.25-Inch Rear Axle Replaced The Dana 70 After 1985. The Ford 9 inch rear end is one of the most popular axles in automotive history. The Lincoln Continental style of disc brakes use 11-inch rotors. This larger offset (hypoid distance) between ring-gear . Measuring from axle flange to axle flange (measurement A in the diagram below) will give you total axle housing width. 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. 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. I have included the narrow 8-inch axles for reference. 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. them. Trust Speedway Motors for best-in-class parts for Ford 9 Inch - delivered quickly, efficiently and without any hassles. 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. The Independent Rear Suspension (IRS) used in '99-'04 Cobras and the current Mustang use almost the same differential as the standard 8.8. 66-71 Fairlanes, Torinos, Montegos, Comets, and other Ford intermediates with big blocks. A The center section is the differential assembly. narrowed rear ends due to the added strength in the middle. Differentials, Axles/Drivelines, Book, Using GoJak Wheel Dollies to Easily Move Your Vehicle, Brake Pad Identification and Friction Surface Options Explained, Adapting Tremec's Popular T5 5-speed Manual to Ford's Flathead V8 Engine, Ford And Chevy Spindle Options For Solid Axle Hot Rods, Small Block and Big Block Chevy Engine Flexplate Guide. 4.09 Front, 4.11 Rear Ratio Differential Ring and Pinon Front and Rear Complete Kit for 8.5 Front (Inch), 9 Rear (Inch) (10 Front, Dropout Rear) . 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. First, you need to understand some fundamentals of the Ford axles to help guide your quest. 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: pattern (same as older Jeep), a 65-inch width at the wheel mounting surfaces, Learn more. Both 8- and 9-inch axle housings are made from a series of stampings that are fixtured and welded together. earlier housings used in cars from 1957 to mid 1960s tended to be the This is an easy way to identify the third members, so youre sure to buy the correct axle. This is by far the most common axle used by restorers, hot rodders, customizers, and racers. Repairing a twisted brake or throttle cable with a simple homemade tool in just minutes Easy and functional. The axle housings themselves had many different variations over time as well. 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 early housings are ok for the average street performance cars. 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. The Ford 8.8-inch is very similar to the General Motors (GM) 878-inch, 12-bolt axle. The tubes do not have any welds, and you just see the witness marks of the parting line for the dies on the tubes. Give us a call at 800-216-1632 to get started. SHARE THIS ARTICLE: Please feel free to share this post on Facebook / Twitter / Google+ or any automotive Forums or blogs you read. Most of the later trucks This particular pinion cartridge is well reinforced and much stronger than the stock production cartridge. the axle from around the 1957 model year right up until the early 1980s Ford 8 Ford 9: CLICK FOR MORE INFO. larger wheel bearing housings. (often referred to as a "POSI") came to be a popular option and Here is an example of such a unit. 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 . What Is Car Battery Voltage And Why Is It Important? 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. 67-73 medium and big block Mustangs and Cougars. The Determining the correct flexplate for your V8 Mopar-powered project takes a little understanding of how these engines were balanced. The tags were replaced with adhesive labels that are placed around the axle tube near the brake and wheel end. can get your submission posted and acknowledged 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. It is as easy to cut down as any other 8 or 9 inch Ford axel. version of the case came into use in 1967 or in subsequent years, but it N-case. 1972 and earlier, 31 spline axles have the ability to be shortened. The N cases had two vertical ribs, three horizontal ribs, and a machined-in fill plug. . GM Chevy S10 82-04 Complete 9" Rear End Package. more plentiful starting in the early 1970's, many of the units found today Width: all measurements are flange to flange. Tip: To search the Towing Guide, press CTRL + F to open a search box in your . Ford differential tags are very . the Broncos from 1966 to 1977, they stayed with the 28-spline units. There is a very fundamental difference between Fords 8.8- and 9-inch axles. features the legendary Ford 9-inch ring and pinion strength, 5-on-5.5 lug Now you can see the C4AW-4025-B part number on the lower left unit, which verifies it as a nodular unit. Why is the Ford 9in rear end the go to rear axle for street and strip builds for over 70 years? GM X-Body Nova Complete Rear End Packages. if not I have other 9" info archived I can post. Comet that has had a HIPO SMALL block with 31-splines and a locker. All the Galaxies I have seen from throughout the 1960s The axle was developed to replace the Ford 9-inch axle.This axle is still in production today for a variety of Ford vehicles. Leaf Spring: The Similarities And Differences. 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. The N cases typically came with the larger Daytona-style pinion support bearing, and 31-spline axle shafts. Ford rear ends, or differentials, were manufactured by either the Dana Corporation or Ford. Rearend/Axle Length Calculator. Home / Performance Front & Rearends / Parts Department / Ring & Pinion Sets / 9-Inch Ford. This format is also applicableto casting date codes. GM Truck Complete Rear End Packages. Because This will ensure that the correct replacement parts are purchased or salvaged from a junkyard to be used in the vehicle. Here is an example to help you through. The entire S550 Mustang generation has had 4, due in part to the limited-slip differential option. 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. replaced, and that is why it remained in use for so long. wheel drives) right up until about 1982, these housings are by far the if one wants to use a 31-spline truck carrier in a car. The Ford Axle code will also help you identify your particular models engine capacity and the year/vehicle make. It has been said that it has a higher When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Come join the discussion about popular models such as the Mustang, Galaxie, Falcon, Fairlane, Torino, Shelby and many more! 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. Produced from 1957 to 1987 by the Ford Motor Company, it was used in full size . Later We provide how-to and technical articles, vehicle and build features and examples, plus calculators and lookups that will help you get your ride from dream to driver. We offer a guide to follow when selecting a new set of brake pads for your race or street car. and 429CJ cars.From what I have seen don't expect to find them in 390 or A Lincoln Versaille rear is a 9" with 28 spline axles, big axle bearings, and disc brakes. 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 case 9-inch complete rear axle is approximately 35 pounds heavier than an 8.8 rear axle with approximately the same components. the axle from around the 1957 model year right up until the early 1980s Its called a 9 inch because the ring gear measures 9 inches. . For example: Hot rodders and drag racers use 9 Ford rear-ends and their aftermarket descendants in just about everything not just Ford cars and trucks. This pinion has the tapered bearings and collapsible spacer in place. The material and heat treating provide excellent wear service life, but doesn't handle shock loads as well as Pro 9 in gears. . of torque to the pinion gear and the gear ratio of the ring-and-pinion is say 4.12:1, the output torque is 412 ft./lbs. actual car posi units, which were primarily 28-spline carriers, can be You will need to look at the Ford axle code chart to replace your Ford rear-end axle parts. One exception to this was * Pro Gears are specifically designed for drag race only. The narrowest production 9-inch axle is 56.375 inches. Ford used This additional bearing and, more importantly, the necessary casting support structure is what drives the larger hypoid offset. 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. determine which axle housing many cars and trucks received. Click on the 'Submit' button to find out how you This is a major advantage compared to other rear axle systems because disassembly is faster and more convenient. Proceed to match the code with its corresponding Axle Ratio column on the table to find the ratio.