This roadster sounds amazing, goes hard and turns heads wherever it goes. 9-inch complete rear axle is approximately 35 pounds heavier than an 8.8 rear axle with approximately the same components. It can also help in identifying the axle ratio of your particular vehicle. Original ratios are 2.47, 2.50, 2.75 or 3.0 with the 2.50 being the most common. It also has a 9-inch ring gear. Most of the later trucks 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. There is a ton of aftermarket support for this axle (see Chapters 3 and 4 for more details). 4. Pairing your vehicle with the wrong axle components will not only damage your vehicle but cost you a lot down the line. Ford non-overdrive transmissions include: C-4, three-speed, automatic. If your vehicle has a Limited Slip Differential, it will be noted as Limited Slip. The desirable N-style, nodular-iron gear cases are available in four different versions. You bring the gumption. medianet_versionId = "3111299"; The smooth backside. Pay attention to the Axle column, where you will get the correct Axle identification code similar to the one stamped on a metal tag on the rear-end axle. The material and heat treating provide excellent wear service life, but doesn't handle shock loads as well as Pro 9 in gears. FORD FINAL DRIVE RATIOS. The Final Drive Ratio shows you how many times the engine turns for one complete turn of the tires. The cast-iron third member is installed from the front of the housing. for the swap to be performed. Calculators. The magnesium addition causes the grain structure to change from flakes to nodules and thus the name nodular iron. Ratings and reviews are provided by customers who have either purchased a vehicle or visited a dealership for service. The center section is the differential assembly. and trucks throughout the 1970s. T & C FORD TOP LOADER 4 SPEED WIDE RATIO 2ND GEAR 31 TOOTH showing . (final drop). WJ Handy Dad assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. This is a great upgrade component to use for high-power applications or if you are replacing your cartridge. If there is an "L" in between, you should have a locking or limited slip differential. The LS swap is no doubt still going strong, but if youre planning to run an automatic behind your 4.8, 5.3, or 6.0L LS-powered ride, youll need to pay attention to a few items we discuss in this buyers guide. This was an 8.75- inch ring gear in a 9-inch housing. Enter the required Overall Width, Pinion Offset (location), Brake Space and Drum/Rotor thickness to find axle length and housing width. The case Call us at (864) 843-9275. station wagons-cars with 351 and up engines received 9-inch units - as did 1973-1979 Ford Truck Rear Axle Codes. 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. 13 lovely chevy 10 bolt rear end gear ratio chart. if not I have other 9" info archived I can post. Projector vs. Reflector: Plan to upgrade your headlights? 31-spline carriers and "Traction Loc" style posi unit. Here are the internal sides of the same three units. socket size and 7/16" fine thread. 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 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. Finding the location of this certification plate is easy. 76-77 large bearing. Details: Motive Gear . We stand behind our products with some of the smartest technicians in the industry. Only the N-series cases are made out of the stronger, more desirable, nodular iron. These tags provided information for the service technicians but wasnt that important for the vehicle assembly plants. Also notice the part number and metal axle tag. Our editors pick the products & services we write about. Measuring from axle flange to axle flange (measurement A in the diagram below) will give you total axle housing width. them. The 8.8" rear end is flat on the top and the bottom as well as the left and right. This is an easy way to identify the third members, so youre sure to buy the correct axle. The code, 4L11, tells us that it is a 4.11:1 ratio with a limited-slip or Traction-Lok differential. 1/2 ton 4X4 pickups! allow larger ring gear to fit. Filed Under: Ford Tech Tips, Rebuild Ford Differentials, The Best Ford Tech Articles, 2023 DiY Ford. It's important to know the friction quality and pad size before selecting a new set of disc brake pads. By positraction, we talk about the type of differential the car uses, whether a limited-slip differential or a conventional non-Positraction differential. weakest and had abrupt ending but welded carrier centers to tubes and a Refer to the Axle Ratio table to determine your rear axle ratio and Limited Slip. 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 more plentiful starting in the early 1970's, many of the units found today always looking for good content to share with Keep in larger wheel bearing housings. 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. 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. These used what is referred to as a Ford Differential Axle Codes. 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. People have been climbing around scrap yards for years to find the best examples of the 9-inch axle. trucks varied more, early half ton trucks got the 28-spline axles and duty.And believe it or not, they were also used in some FE equipped Ford Leaf Spring: The Similarities And Differences. Also note there isn't a cover on the rear like most axles. And you can find the axle code charts on the internet from your manufacturer. carriers both, as well as with the spline count on the axle shafts. small bearing housing can be differentiated from a large bearing housing same width, but the distance between spring perches is different between We have a large selection of gear sets in stock and can recommend the correct . We will look at what axle codes are and how to identify the axle ratio from the code. 56" 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. Ford intermediates with big blocks. 2. The rear-end housing has a vast amount of ford 9-inch gear ratios available. replaced, and that is why it remained in use for so long. Ranger On some tags, the first 2 digits don't appear on the tag, but they must be used to identify the axle. The 9-inch third-member bottom fasteners, on the left, can only be accessed with a wrench. First, the pinion shaft housing is removed from the front of the housing by removing five bolts. How can one verify "Posi" without taking the differential apart? Our example is going to assume a 6000 rpm redline and 26-inch-diameter tires. housings also evolved over the years: The Repairing a twisted brake or throttle cable with a simple homemade tool in just minutes Easy and functional. This larger offset (hypoid distance) between ring-gear . Theres an easy way to tell an 8-inch apart from a 9-inch. some 302 4V cars with optional gear ratios). . pattern (same as older Jeep), a 65-inch width at the wheel mounting surfaces, JavaScript is disabled. Boss 429s, 427s, 428 CJ/SCJ and the 429 cars which received the *** SELECT GEAR RATIO FOR PRICE *** Categories. Over several generations of small block Chevy (and big block Chevy) engines there have been several changes that dictate what flexplate works with them. 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). 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. 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. 31-spline carriers and "Traction Loc" style posi unit. and 429CJ cars.From what I have seen don't expect to find them in 390 or Here is a quick visual summary: The 1957 housings do not have dimples on them and have an oil drain plug. There are a few exceptions that you will see in the Ford Axle code chart. Use this information at your own risk. 67-71 Comet, Cougar, Mustang, Fairlane = 59.25 inches. You will also learn how to identify the codes in Ford vehicles. The small are 2.835" or just under 3" and the large are 3.150" or just over 3". Many people prefer to just call it the Ford 9-inch-style wheel end. 1972 and earlier, 31 spline axles have the ability to be shortened. actual car posi units, which were primarily 28-spline carriers, can be 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. It has enjoyed a long production history with many variants. This pinion has the tapered bearings and collapsible spacer in place. I put together a whole collection of housings and third members. Cost and complexity are two. It allows for the pinion side Center Section to be removed. Read more: CV Axle Boot: Overview, Signs, And Replacement. 31-spline carriers and axle shafts. Of the four versions of the N case, three have an actual N cast into it right above the pinion cartridge. Interestingly, the Ford axle uses the exact same size of tapered roller bearings as the GM 12-bolt. housings. (CROSS SECTION WIDTH x 0.ASPECT RATIO x 2 25.4) + WHEEL DIAMETER = OVERALL TIRE DIAMETER. These axles even have a unique bolt pattern of five on 5 inches. Many aftermarket companies produce 9 Ford equivalent rear axles for the drag racing and hot rod industry. Ford 9 Inch Rear End Gear Ratios Chart1969 impala ss 427 4 speed. The axle was developed to replace the Ford 9-inch axle.This axle is still in production today for a variety of Ford vehicles. Housing end bolt patterns can be confirmed on the bottom of the axle order form. 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. The Ford 9-inch can be found under 1974-1986 F-150s and 1978-1986 Broncos. Because The aftermarket has responded to this by offering a plethora of ratios ranging from 2.91 to 6.50:1. Axle code. I have a '50 Club Coupe and have experienced this first hand. 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 This chart applies to all Ford non-overdirve transmissions, manual and automatic. 1967-1973 Mustang/Cougar - light duty, thinnest housing material, small axle used the 9-inch rear, regardless of engine size. 8.75, 9.25, Ford 9 inch, and GM's 8.25 inch . The When you look on the inside, you see WAB- 4025A. When it comes down to actual shafts as well, since the truck lug Some of the 9-inch truck differentials will have an exaggerated hump on the rear cover to . These shafts had a longer brake spacing offset and a unique brake drum register diameter of 2.870 inches, which was uncommon for the time. 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. 1967-1973 Mustang axles identified by wheel flange: two large holes and counter sunk center - 31 splines. 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. 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. can easily tell this is a 9-inch from the hump in the rear and (2) Drag Racing 101 ~ Everything You Need to Know! It's uncertain if this E It is as easy to cut down as any other 8 or 9 inch Ford axel. Of course, if your budget allows, you can purchase an aftermarket iron case that is stronger than any factory case. Content. 1967-1973 Mustang, Torino, Ranchero, Fairlane 9-inch if one wants to use a 31-spline truck carrier in a car. A the best. A 2-inch version is not shown. What Is Car Battery Voltage And Why Is It Important? GM B-Body Complete 9" Rear End Packages. 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. wheel drives) right up until about 1982, these housings are by far the same width, but the distance between spring perches is different between "Pro" gears are designed specifically for drag racing. Well show you what to look for in this buyers guide. 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 close-ratio and C4 289HP trans were mated to the 3.50, and occasionally to the 3.89 and 4.11. Ratio & type. The ranger truck works good with a 9-inch from a The typical 3 inch-diameter tubes can be a bit flimsy in higher-power applications. The applications due to the demise of most performance engine options in the Generally most cars received the small axle bearings and 28-spline axle at car swap meets and shows are the units pulled from trucks with the Since the "Limited slip" or Locking rear end Its called a 9 inch because the ring gear measures 9 inches. 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. The Ford Axle code chart is a handy tool for positraction replacements. 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. A metal axle tag is typically located on the driver-side front of the third member. Both 8- and 9-inch axle housings are made from a series of stampings that are fixtured and welded together. There are 4 different sets of rear axles that would have come stock in 66-77 Broncos. - as in the Mustang line, most however never received a factory 9-inch). The unit on the top left seems to be nodular iron but requires a little more investigation to verify. In order to verify a nodular unit, you need to look on the inside of the casting. 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. 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. For example, Ford says the 2018 F-350 Super Duty 4x2 regular cab pickup equipped with the 6.2-liter . 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. inches 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. 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) . It may seem strange to begin by comparing the 8-inch to the 9-inch axle, but there is an important distinction to make since the 8-inch axle is weaker than the 9-inch. Axle The original carrier is normally equipped with a CV joint flange, which can be replaced with a U . The 1960s to 1967s still retain the dimples but also have an oil level plug in the back cover. Performance Front & Rearends GM Vehicles Ford personnel and/or dealership personnel cannot modify or remove reviews. Note the ring diameter cast into the housing above the pinion. 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. earlier housings used in cars from 1957 to mid 1960s tended to be the only need to carry one spare should you choose to. nickel content and better casting than the earlier single ribbed cases it $(document).ready( function () {$('#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 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. widths I keep in mind for Mustangs are the following: You truck housings received even beefier center carrier housings and tubes, and this style of center carrier housing is best suited for drag cars or around 64-65 I believe.They are most often found behind the later 428CJ There are several reasons for this. actual car posi units, which were primarily 28-spline carriers, can be Axles Tubes Are 4-Inches. * Pro Gears are specifically designed for drag race only. This allows quick gear ratio changes to accommodate different tracks or updates to your vehicles horsepower and torque ratings. This strengthens the whole rear end assembly. 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. Most of Proceed to match the code with its corresponding Axle Ratio column on the table to find the ratio. 1964-1971 Falcon, Comet, some 1965-1969 Mustangs or 1964-1967 Ranchero V8 cars. How do I find the Axle Ratio and Limited Slip? 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. 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 repair process requires the axle to be disassembled and thoroughly cleaned. with 3/8" fine thread, while the larger bearing use 11/16" There are 8.5-inch gears installed in these housings for lowerpower vehicle applications. In 1963, Ford includedmore information. "N The image below shows the Safety Label of a Ford Truck. 66-71 Fairlanes, Torinos, Montegos, Comets, and other Ford intermediates with big blocks. narrowed rear ends due to the added strength in the middle. (The third digit of the axle code identifies the ratio and/or capacity of the front axle, if applicable. The smaller 8-inch third member is on the right. bearings, 28 and 31 splines, 57-68 passenger car and 1/2 ton truck - medium duty, stronger than Mustang This is an example of the only Ford 9-inch version that utilized one-piece tubes. 28 spline axles are tapered and cannot be shortened and re-splined. It was also used in the 1983-1996 full-size Bronco, and E150 Econoline . 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). The 28-tooth axle shafts are typically tapered and cannot be shortened. The third member supports all of the gears and bearings, which allows for easier gear ratio swaps if you have multiple third members. The 8-inch also was only available with 28-tooth axle shafts. The last set of numbers is the vehicle plant code. The Lincoln Continental style of disc brakes use 11-inch rotors. Axle Ratio = (RPM X Tire Size)/ (Speed (MPH) X 336) Example 4.88 = (2881 X 37)/ (65 X 336) The rear end width is important on shoebox Fords if you want some selection on wheels. Width: all measurements are flange to flange. medianet_height = "250"; I'm not responsible for incorrect information, Width: all measurements are flange to flange, Ford Rear Axle Assembly Identification - Page 01 - FORDification.com. Gear Ratios - RPM from Speed, Rear & Trans. 31-spline axles and carriers for most trucks. The ring and pinion are then accessed, also from the front, by removing another 10 bolts. Rusty but Rare 1976 Chevy K10 Sport Truck Revival! Fords small block and big block engine families have their share of flexplate differences. For instance, if both the engine and transmission deliver up to 100 ft./lbs. Gross Vehicle Weight ( GVW ) would But it will also use more fuel in all situations because the engine's rpm will be higher. Your email address will not be published. See all 20 photos. 31-spline carriers and axle shafts. The case It is an 8 inch rear axel so many parts interchange with many other years Fords and Mercury's using an 8 inch axel. found in the trucks up to around 1982. Ford used 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. Ford 9 inch Gears. This is a sampling of some of them. 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. Note: Rear axle ratios are available for 2008 and newer models. 100 x 4.12. The Ford 8.8-inch axle has a cast center section and the internal components are installed from the rear. In the early days of hot rodding, with the majority of hot rods being Fords, it stands to reason the '30s and '40s Ford "banjo" rearend dominated the scene. The leaking weld area is then ground down and a MIG or TIG welder is used for the repair. Discount is automatically applied. many half ton trucks continued to utilize the 9-inch (both 2 wheel & 4 As part of my research, I went to renowned Currie Enterprises and gathered one of just about every different 9-inch axle variant. This complex fixturing and welding process, coupled with fuel economy concerns, is what eventually led to their production demise. WJ Handy Dad recommends safe practices when working on vehicles/homes and or with tools seen or implied in this video. The WAR, WAA, and WAB cases have the same ribbing as the N case, but are missing the ever important N feature. 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.
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