"N Case" was no longer needed for passenger car/truck around 64-65 I believe.They are most often found behind the later 428CJ Mustangs around 64-65 I believe.They are most often found behind the later 428CJ 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. This is an example of the only Ford 9-inch version that utilized one-piece tubes. 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. It also has a 9-inch ring gear. . Determining the correct flexplate for your V8 Mopar-powered project takes a little understanding of how these engines were balanced. There are 4 different sets of rear axles that would have come stock in 66-77 Broncos. * Pro Gears are specifically designed for drag race only. The Ford 8.8-inch axle has the same ring gear mounting distance (see Chapter 7) for all ratios, just like the 9-inch. With so many better performing aftermarket options today, there is no reason to use these marginal brakes. The WAR, WAA, and WAB cases have the same ribbing as the N case, but are missing the ever important N feature. Original ratios are 2.47, 2.50, 2.75 or 3.0 with the 2.50 being the most common. Here is an example to help you through. We stand behind our products with some of the smartest technicians in the industry. can get your submission posted and acknowledged Restoration matching issues will be avoided since the right optioned components will be used to make the restoration. Ford Aerostar: The 8.8-Inch axle . 6. Therefore, these axle assemblies require better quality oil and good underbody airflow to keep the unit cool. We're wheel drives) right up until about 1982, these housings are by far the What Is Car Battery Voltage And Why Is It Important? if one wants to use a 31-spline truck carrier in a car. - Rod Stroke Ratio - Stroke Size Rear Gear Requirements - Rear End Gear Ratio Needed - Speed from RPM, Rear & Trans. housings. 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 . All the Galaxies I have seen from throughout the 1960s 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. But the 9" is better in a couple respects: It's much lighter than a Dana 60. 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). smooth backside. It has been said that it has a higher These axles even have a unique bolt pattern of five on 5 inches. The Final Drive Ratio shows you how many times the engine turns for one complete turn of the tires. If the axle tag is missing, as most are, you need to remove the third member in order to know what ratio you have and if it has a limited-slip or not. We offer a guide to follow when selecting a new set of brake pads for your race or street car. 31-spline carriers and "Traction Loc" style posi unit. We will look at what axle codes are and how to identify the axle ratio from the code. This bearing is one of the reasons that the 9-inch has the reputation for being bulletproof. Ford codes may have one or two characters, but any code starts with a letter. as the Mustang. (The third digit of the axle code identifies the ratio and/or capacity of the front axle, if applicable. The Ford Axle code chart is a handy tool for positraction replacements. 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 The axle tag typically has two lines of numbers and letters stamped on it. The unit on the top left seems to be nodular iron but requires a little more investigation to verify. For a Ford 9 inch rear end, swapping gears is fairly easy as it has a removable third member. Select the Towing Guide for your vehicle's model year. If you liked this article you will LOVE the full book. The axle code in our example, H9, has a specific meaning. duty.And believe it or not, they were also used in some FE equipped Ford . Another bonus is that the axleshafts are of equal length, so youll 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 . Of course, if your budget allows, you can purchase an aftermarket iron case that is stronger than any factory case. This chart references the connection between the month codes and the actual month. The engines flexplate is a critical part to transferring power to your drivetrain. I guess this helps add to the splendor of the vehicle. some 302 4V cars with optional gear ratios). 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. In this chapter I share a summary of decades of work on these axles. The smaller 8-inch just cannot handle the abuse as its bigger brother can. Mismatching issues are a big problem when it comes to automotive repairs. the Broncos from 1966 to 1977, they stayed with the 28-spline units. Differentials take the power from the rear axle and transfer it to the rear wheels by way of special gears. The 7.5" rear end is also flat on top and bottom. The Ford version uses larger axle shafts and different lube flow strategy. This video is a good example of what goes into the process . 1972 and earlier, 31 spline axles have the ability to be shortened. and Fairlane axle housings are often grouped together because they are the The 28-tooth axle shafts are typically tapered and cannot be shortened. 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. Centers: 1957 - no dimples, flat center band up the center of the rear cover, bottom drain plug, 1958-1959 - two dimples on back of housing, flat center band, some had drain holes, 1960-1967 - two dimples, flat center band, oil level hole in back cover, 1963-1977 Lincoln, LTD, Thunderbirds had 9.375 inch centers, housings were cut away at the gasket surface for ring gear clearance, one curved rib at the front top portion of differential, strong but no gears, 28-spline axles cannot be shortened and resplined (they're tapered), 1972 and earlier 31-spline axles have the ability to be shortened, 1973 and later The large bearing size was available with fi ve different brake drum widths. Here is an example of such a unit. 8300 N. Austin Ave Morton Grove, IL 60053 SHARE THIS ARTICLE: Please feel free to share this post on Facebook / Twitter / Google+ or any automotive Forums or blogs you read. 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! Notice that the date code is C9UA with the ring gear size of 8.7. This is a major advantage compared to other rear axle systems because disassembly is faster and more convenient. 66-75 large bearing, 3. for it. The typical 3 inch-diameter tubes can be a bit flimsy in higher-power applications. 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. 1/2 ton 4X4 pickups! 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!. It's . Measuring from the outside of the axle flange to the centerline of the pinion gear/nut will give you the correct axle length required (B and C measurements below). No. One of the primary reasons why the 9" Ford rear end has come to dominate drag racing is the ease with which thirdmembers with various ring & pinion gear ratios can be installed. It is a banjo-style axle as is the 8-inch. Since these housings were a series of stamped-steel pieces all welded together, there were many different overall lengths, tubes sections, mounting brackets, and even general constructions over the years (see Chapter 5). some 302 4V cars with optional gear ratios). It allows for the pinion side Center Section to be removed. Most of the time, the differences are in shock and spring mounting brackets and, of course, brake hardware. Dont Be That Guy, Reversing Gears ~ Rescuing Ones Own Derelict 1967 Pontiac GTO, How To Paint a Lace Roof on the Cheap Using Grandmas Curtains, Exploring an Antique Junkyard in the Hills of West Virginia, Engine, Transmission, Chassis Swap Donor Vehicle Look-Up, How To Box-In a Differential / Solid Axle Rear-End Housing, How To Select Proper Rear-End / Differential Gear Ratio, Install Bolt-On Disc Brake Conversion Kit on 8 and 9 Ford Rear-Ends, 1966 Ford Fairlane 427 Twin Turbo Street/Strip RestoMod Build, How To Repair a Twisted Cable End with a Simple Homemade Tool, 1928 Ford Model A Roadster Build by OL School Garage, Engine / Transmission / Chassis Donor Search, Project Cars and Part Donor Cars For Sale. Since the "Limited slip" or Locking rear end Our expert customer support technicians are available Monday through Friday from 7:00 a.m. until 7:00 p.m., CST. Ford 8 Ford 9: CLICK FOR MORE INFO. The last set of numbers is the vehicle plant code. You are correct sir, these are the standard ratios for 65-66. Ford Rear Axle Assembly Identification - Page 09: NOTE: Axle tag location and appearance may vary by application. The ranger truck works good with a 9-inch from a 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. But to be correct, it is a 3/4 fl oat. 66-75 small bearing, 2. Our aluminum cases are manufactured from premium material sourced in the USA, designed and machined in-house, and offered in various forms to meet the requirements of the most demanding applications. The middle number is the ring gear diameter in inches, typically an 8 or 9. It is as easy to cut down as any other 8 or 9 inch Ford axel. "Pro" gears are designed specifically for drag racing. Finding the location of this certification plate is easy. The magnesium addition causes the grain structure to change from flakes to nodules and thus the name nodular iron. 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. large-bearing semi-floating axles, and many can be found with hefty 31-spline narrowed rear ends due to the added strength in the middle. for 1967-1970 (same as 1966-1969 Fairlane, Torino, Comet & Cyclone non This will ensure that the correct replacement parts are purchased or salvaged from a junkyard to be used in the vehicle. The repair process requires the axle to be disassembled and thoroughly cleaned. The N cases had two vertical ribs, three horizontal ribs, and a machined-in fill plug. allow larger ring gear to fit. You will need to look at the Ford axle code chart to replace your Ford rear-end axle parts. Later inches The 9-inch third-member bottom fasteners, on the left, can only be accessed with a wrench. 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. Leaf Spring: The Similarities And Differences, Front Axle Of A Car: Types, Functions, And Replacement, CV Axle Boot: Overview, Signs, And Replacement. So dont be surprised that most of these axles leak from the welds. First, you need to understand some fundamentals of the Ford axles to help guide your quest. Our Mopar flexplate buyers guide will help. The entire S550 Mustang generation has had 4, due in part to the limited-slip differential option. Also note there isn't a cover on the rear like most axles. 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. i.e. 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. (It was later used for pick-ups and Broncos.) Ford Axle codes help identify the vehicles positraction as well as an axle to gear ratio. Read this first! Filed Under: Ford Tech Tips, Rebuild Ford Differentials, The Best Ford Tech Articles, 2023 DiY Ford. for 1965-1966 (the same width as 1964-1965 Falcons and 1962-1965 Fairlanes This custom axle tag was obviously hand cut as evidenced by the sharp tin-snipped-looking ends and includes DSO, for Dealer Special Order. Get any 3 for $25 plus shipping. small bearing housing can be differentiated from a large bearing housing Some even consider these axles to be bulletproof. by the size of the nuts and thread used to retain the brake backing plates It was introduced in 1957 model year cars and ended production in 1986, having been phased out in favor of the Ford 8.8 inch axle.However, aftermarket companies still produce the 9-inch design. You will also learn how to identify the codes in Ford vehicles. Some axle shafts can be shortened and a new spline machined in place. Here is a picture of the milling machine cutting new spline teeth after the axle has been cut to length. 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 For reference, this section from the Ford MPC is posted . 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. The last set of digits on the top row on the right side is the date code. There may be other labels attached to that pillar so pay attention to one that looks similar to the one below. diameter bolt circle, 1967-1973 Torinos, Rancheros, Fairlanes 59.25 inches or 1960-1967 two dimples, flat center band, oil level hole in the back cover. Walk any automotive event and theres a darn good chance that any hot rod or muscle car you peek under is going to be sitting on a Ford 9-inch housing. So, after crawling under just over 50 Cars, trucks etc at the local Upull, I found that a 1995 2wd 2.3 Ranger has the correct length driveshaft at 47.5".chevy truck driveshaft length chart. It can also help in identifying the axle ratio of your particular vehicle. more plentiful starting in the early 1970's, many of the units found today Ford 9.5 PRO GEAR* *PRO GEAR RATIO PART NO. Select the Towing Guide for your vehicle's model year. Discount is automatically applied. The 10,41 gear ratio is also great for off-road activities . For instance, if both the engine and transmission deliver up to 100 ft./lbs. GM Truck Complete Rear End Packages. Because This is because the supply is limited to 1-wire alternators are perfect for engine swaps or just keeping things simple for your project. Measuring from axle flange to axle flange (measurement A in the diagram below) will give you total axle housing width. Because There are even different pinion cartridges that have been available from the various production years and models for this axle. 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. 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 . For a better experience, please enable JavaScript in your browser before proceeding. This is an easy way to identify the third members, so youre sure to buy the correct axle. This pinion shows excessive wear on the trunnion surface and should not be re-used. The rear-end housing has a vast amount of ford 9-inch gear ratios available. This not easily accomplished with integral carrier axles, like the GM 10- and 12-bolt. 76-77 large bearing. The Ford 10.25-Inch Rear Axle Replaced The Dana 70 After 1985. 100 x 4.12. The code, 4L11, tells us that it is a 4.11:1 ratio with a limited-slip or Traction-Lok differential. 1957 no dimples, flat center band up the center of the rear cover, bottom drain plug. 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. The Ford 9 inch rear end also has the widest variety of ratios on the market, Particularly in the 3.0:1 to 5.0:1 range. differences, 28-spline car axle shafts are much more abundant than the Most of This axle tag belongs to a 1977 F-150. Measuring for your 9-inch axles requires a few basic measurements to be taken. 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. Install Kits and Gears Sets Listed By Rear End. it was very complete. But if youre looking for an original, they can be spotted quite readily even without an axle identifycation tag. The format has changed over the years but mostly follow this sequence:. Ford trucks and cars from 1968 onwards are equipped with the Ford Axle codes, which are clearly indicated on the certification plate. Typically with just this information, you can cross reference what you need to know about the axle. replaced, and that is why it remained in use for so long. 52" Ford improved tooth contact of the Ford 9 inch gears by locating its pinion gear lower on the ring gear. Comet that has had a HIPO SMALL block with 31-splines and a locker. The Lincoln LS and Jaguar S-type were equipped with an 8-inch, castaluminum, independent- style carrier. used the 9-inch rear, regardless of engine size. 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. medianet_versionId = "3111299"; The One exception to this was Home / Performance Front & Rearends / Parts Department / Ring & Pinion Sets / 9-Inch Ford. 74-75 medium duty large bearing, and. Vintage 1980 Yamaha Enticer Snowmobile Revival to Former Glory. 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. "N The 1960s to 1967s still retain the dimples but also have an oil level plug in the back cover. This is a great upgrade component to use for high-power applications or if you are replacing your cartridge. same width, but the distance between spring perches is different between Careful aftermarket shops and their stringent attention to repairing these housings are able to correct many of these issues. Of the four versions of the N case, three have an actual N cast into it right above the pinion cartridge. 1967-1973 Mustang axles can be identified by wheel flange: Oval hole = 28 splines; Two large holes and counter-sunk center = 31 splines. Like the H in our case shows a car with a limited-slip differential. This roadster sounds amazing, goes hard and turns heads wherever it goes. There is a machined roller bearing race on the pinion head portion that points at the differential opposite thetapered bearing races. if one wants to use a 31-spline truck carrier in a car. inch diameter all the way to the backing plate, coil housings have upper station wagons-cars with 351 and up engines received 9-inch units - as did Unless you are building a Pinto or straight six-cylinder vehicle, you want to avoid it. The axle housings themselves had many different variations over time as well. 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.
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