The straddle-mounted pinion has a roller bearing in the gear case, which provides additional support for the pinion under heavy loads. 1967-1973 Mustang, Torino, Ranchero, Fairlane 9-inch CASE" if one wants to use a 31-spline truck carrier in a car. 1958-1959 two dimples on the back of housing, flat center band, some had drain holes. Use this information at your own risk. While the larger offset makes the ring and pinion gears stronger, the additional sliding of the gear teeth creates more heat in the axle. The ranger truck works good with a 9-inch from a Once you have identified the label, locate the word AXLE under the bar code section. the axle from around the 1957 model year right up until the early 1980s by the size of the nuts and thread used to retain the brake backing plates . socket size and 7/16" fine thread. The Ford chart below contains a general decoder system for Ford pickup from the 1980s till the 1990s. The smaller 8-inch third member is on the right. 65-66 Mustang = 57.25 inches. 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.. 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. A copy of the Ford Axle Code Chart is linked below in this article. 1/2 ton 4X4 pickups! Applications: Ford Used The Dana 70 And Dana 70HD Axles In F-350 Trucks Up To 1985.5. There is a machined roller bearing race on the pinion head portion that points at the differential opposite thetapered bearing races. 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. housings also evolved over the years: The Our example is going to assume a 6000 rpm redline and 26-inch-diameter tires. 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. medianet_height = "250"; control arm mount. 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. if not I have other 9" info archived I can post. Are reviews modified or monitored before being published? Axles Tubes Are 4-Inches. and Fairlane axle housings are often grouped together because they are the If you don't know your gear ratio, you can calculate it by taking the number of rear . truck housings received even beefier center carrier housings and tubes, First, you need to understand some fundamentals of the Ford axles to help guide your quest. The Ford 8.8-inch axle has the same ring gear mounting distance (see Chapter 7) for all ratios, just like the 9-inch. That is your vehicles axle code. The certification plate can be located on the lock face of the left door edge. applications due to the demise of most performance engine options in the Paint gmc dupont charts reference chart 1956 1959. Drag Racing 101 ~ Everything You Need to Know! Because of the long production history of this axle, many variants are available. - as in the Mustang line, most however never received a factory 9-inch). Discount is automatically applied. Many people are not aware that Ford made a smaller banjo axle and confuse the 8-inch for a 9-inch. them. There may be other labels attached to that pillar so pay attention to one that looks similar to the one below. 70's. 66-75 small bearing, 2. 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 . It is the one most commonly It has been said that it has a higher is the strongest factory case made BY FORD!!! In contrast, on the 9-inch, two nuts on the bottom at about the 6 and 7 oclock positions cannot be accessed with a socket and require a wrench. Most of the time, the differences are in shock and spring mounting brackets and, of course, brake hardware. While the 8.8 is similar to the 12-bolt, it isnt identical. About | Contact | Terms | Privacy. But if youre looking for an original, they can be spotted quite readily even without an axle identifycation tag. The material and heat treating provide excellent wear service life, but doesn't handle shock loads as well as Pro 9 in gears. for it. 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. Gear Ratios - RPM from Speed, Rear & Trans. Our editors pick the products & services we write about. Many aftermarket companies produce 9 Ford equivalent rear axles for the drag racing and hot rod industry. the axle from around the 1957 model year right up until the early 1980s The GoJak wheel dolly makes moving immobile vehicles around your shop easy as place, pump, and push! 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. wheel drives) right up until about 1982, these housings are by far the The Maverick 8" or Ranger 7.5 and 8.8 are good options. 100 x 4.12. The Daytona- style cartridge allows for a larger pinion head bearing when compared to the standard pinion cartridge. With so many better performing aftermarket options today, there is no reason to use these marginal brakes. Some tags reference the week of the month instead of the exact day and just use a letter (A to E) for first through the fifth week of the month. 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. General Motors rear end differentials are referred to by the diameter of the ring gear, i.e. Tip: To search the Towing Guide, press CTRL + F to open a search box in your . Ford 8 Ford 9: CLICK FOR MORE INFO. Ranger Station, Submit Save my name, email, and website in this browser for the next time I comment. For example, Ford says the 2018 F-350 Super Duty 4x2 regular cab pickup equipped with the 6.2-liter . by Ford exist in the size of the outer axle bearings in the housings and When it comes down to actual shafts as well, since the truck lug The WAR, WAA, and WAB cases have the same ribbing as the N case, but are missing the ever important N feature. This is an example of the only Ford 9-inch version that utilized one-piece tubes. This is a sampling of some of them. large-bearing semi-floating axles, and many can be found with hefty 31-spline Gross Vehicle Weight ( GVW ) would and this style of center carrier housing is best suited for drag cars or This case looked like a nodular unit from the front regarding rib structure but did not have the N on it. The These labels have a specific code that is similar to the axle code on the 9-inch axles. as the Mustang. There were many instances of cuts and scratches from the thin steel tags sticking up on the axles. The ring and pinion are then accessed, also from the front, by removing another 10 bolts. The 10,41 gear ratio is also great for off-road activities . Find the word AXLE under the bar code. When you buy through our links, we may get a commission. Our experts will help you find the correct ring and pinion set for your particular application. GM Tri 5 55-57 Chevy Complete 9" Rear End Package. Would very much apreciate it if someone would post it again. Find the two-digit code under AXLE. This roadster sounds amazing, goes hard and turns heads wherever it goes. small bearing housing can be differentiated from a large bearing housing used the 9-inch rear, regardless of engine size. You can do this by multiplying by the gear ratio. The WFE-V2 helps us fi nd the decade of the 1970s. 67-71 Comet, Cougar, Mustang, Fairlane = 59.25 inches. Therefore, these axle assemblies require better quality oil and good underbody airflow to keep the unit cool. type, 28 and 31 splines, Ranchero/Torino - heavy duty thick wall housing, 3.25 inch diameter axle version of the case came into use in 1967 or in subsequent years, but it for 1965-1966 (the same width as 1964-1965 Falcons and 1962-1965 Fairlanes . 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. 66-75 large bearing, 3. There is typically a stamped steel cover that must be removed to gain access to the internals. The 9-inch housings center section will not allow the socket to clear, and you must remove the two bottom retaining nuts with a boxed end wrench. 9-inch (cars) have a 5-on-5 bolt circle and the axles cannot be shortened. The ring gear speed sensor is shown in the upper right-hand portion of the photograph. This was an 8.75- inch ring gear in a 9-inch housing. Width: all measurements are flange to flange. 31-spline car shafts. Comet that has had a HIPO SMALL block with 31-splines and a locker. This chart applies to all Ford non-overdirve transmissions, manual and automatic. 1957 . station wagons-cars with 351 and up engines received 9-inch units - as did 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. Note the two lower bolts at 6 and 7 oclock have straight access with a socket. Details: Motive Gear . Leaf Spring: The Similarities And Differences. The Identifying a differential hinges the ability to distinguish the two primary rear-end types---the 8- or 9-inch rear end---denoting ring-gear size. Ironically, 8.0-inch independent carriers were made in cast iron. There are 8.5-inch gears installed in these housings for lowerpower vehicle applications. for 1967-1970 (same as 1966-1969 Fairlane, Torino, Comet & Cyclone non 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. Ford 9.5 PRO GEAR* *PRO GEAR RATIO PART NO. With 568 Ford 9 Inch Parts for sale, you're sure to find the ideal parts . CLICK HERE to see a complete listing of front axle codes). common carrier housing found is the C7AW-E. (narrowest 9-inch housing), 1966-1977 Bronco 58 inches but has 5-on-5 1/2 inch Hot rodders and drag racers use 9 Ford rear-ends and their aftermarket descendants in just about everything not just Ford cars and trucks. Check it out. Ford used Ford trucks and cars from 1968 onwards are equipped with the Ford Axle codes, which are clearly indicated on the certification plate. A strong 9" with a nodular diff and 31 spline axles is fairly comparable in strength to a stock Dana 60 rear end. socket size and 7/16" fine thread. 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. 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. Axle Size/Strength Chart; Explained Videos; Tech Articles; 9-Inch Ford. GM Chevy S10 82-04 Complete 9" Rear End Package. smooth backside. The axle housings themselves had many different variations over time as well. Most 1972 and earlier 31-tooth spline shafts can be shortened and 1973 and later versions typically cannot be resplined. 1972 and earlier, 31 spline axles have the ability to be shortened. . Most of the later trucks narrowed rear ends due to the added strength in the middle. The 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. "Pro" gears are designed specifically for drag racing. 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 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. This pinion has the tapered bearings and collapsible spacer in place. 54" smooth backside. 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. Original ratios are 2.47, 2.50, 2.75 or 3.0 with the 2.50 being the most common. Of course, if your budget allows, you can purchase an aftermarket iron case that is stronger than any factory case. determine which axle housing many cars and trucks received. 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. most abundant. The leaking weld area is then ground down and a MIG or TIG welder is used for the repair. So dont be surprised that most of these axles leak from the welds. With its 2.250-inch offset, the Ford 9 inch gears hypoid distance is greater than popular competitors, most of which are at 1.5 inches or even less. pattern (same as older Jeep), a 65-inch width at the wheel mounting surfaces, Generally most cars received the small axle bearings and 28-spline axle I reference these axles based on the ring gear nominal outside diameter in inches. dimples. earlier housings used in cars from 1957 to mid 1960s tended to be the narrowed rear ends due to the added strength in the middle. Trust Speedway Motors for best-in-class parts for Ford 9 Inch - delivered quickly, efficiently and without any hassles. We offer a guide to follow when selecting a new set of brake pads for your race or street car. GM X-Body Nova Complete Rear End Packages. What Is Car Battery Voltage And Why Is It Important? housings also evolved over the years: It is common to find a 9-inch in a old Falcon or around 64-65 I believe.They are most often found behind the later 428CJ 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. Now that you have identified the axle code, let us know the axle ratio. 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. The exception is the 2002-2003 Ford Explorer Sport which still used the solid rear 8.8-Inch axle. Ford 9 Inch Rear End Gear Ratios Chart1969 impala ss 427 4 speed. This includes the Center Case, the Pinion gear, the ring gear, and the differential or spool. Leaf Spring: The Similarities And Differences, Front Axle Of A Car: Types, Functions, And Replacement, CV Axle Boot: Overview, Signs, And Replacement. The last one i got was marked "Mustang Posi" on the rear of the differntial by the people at the yard who dissembled the car. 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. It was then replaced by the Ford 8.8 inch rear axle. and this style of center carrier housing is best suited for drag cars or These tags provided information for the service technicians but wasnt that important for the vehicle assembly plants. You can find the axle code on the Safety Standard Certification label information. replaced, and that is why it remained in use for so long. Here is a quick visual summary: The 1957 housings do not have dimples on them and have an oil drain plug. The aftermarket Daytona-style pinion cartridge accommodates the larger and stronger pinion head bearing. These used what is referred to as a The larger offset is better for strength and noise but worse for sliding and efficiency. The 9-inch housing's center section will not allow the socket to clear, and . We stand behind our products with some of the smartest technicians in the industry. The Ford 9 inch housing is a semi-floating, drop-out axle. Content. This consists of the Ford Pickup F100 lineup till the Ford F350 lineup. C-6, three-speed, automatic. 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. 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. Bolt-In 9 Inch Ford Rear Housing for 1967-72 GM Pickup Trucks, Speedway Centered Housing Ford 9 Inch Axle Kit, 58 Inch Width, Fabricated 9 In Ford Rear Axle w/ Posi Traction 3rd Member, 58 In, 9 Inch Ford Cut-to-Fit Axle with Bearing, Big Ford/New Style, Ford 9 Inch Gear-Style Posi Differential Third Members, Ford 9 Inch Bolt-On Rear Disc Brake Kit w/ E-Brake Caliper, Driven 04230 75W90 Limited Slip Gear Oil Change Kit, Ford 9 Inch, CarTech SA170 High-Perf. 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. We will look at what axle codes are and how to identify the axle ratio from the code. There are a few exceptions that you will see in the Ford Axle code chart. in the backside middle and stronger tubes. for the 1971-1973 Mustangs - cars with 351 engines and up receiving the 9-inch 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. WJ Handy Dad recommends safe practices when working on vehicles/homes and or with tools seen or implied in this video. Like the H in our case shows a car with a limited-slip differential. The first table is the code and gear ratio. These axles did have metal axle tags similar to the 9-inch axles but they were slowly phased out as vehicle programs were updated. Refer to the Axle Ratio table to determine your rear axle ratio and Limited Slip. The most more plentiful starting in the early 1970's, many of the units found today Written by Joe Palazzolo and Republished with Permission of CarTech Inc. The 8-inch also was only available with 28-tooth axle shafts. Also notice the part number and metal axle tag. The Independent Rear Suspension (IRS) used in '99-'04 Cobras and the current Mustang use almost the same differential as the standard 8.8. But the 9" is better in a couple respects: It's much lighter than a Dana 60. You bring the gumption. Now you can see the C4AW-4025-B part number on the lower left unit, which verifies it as a nodular unit. (often referred to as a "POSI") came to be a popular option and housings. Ford 9 inch axles different from other high-performance rear endsare how the ring and pinion gear is accessed. Remember to locate the Safety Standard Certification label on the left side door post as you open the door. 7.5 inch, 8.5 inch, 10.5 inch. Hypoid offset is the distance between the centerline of the pinion and the centerline of the ring gear. The 8.5- and 8.8-inch gears have even found themselves in the independent-carrier-style axles. thanks. Differentials take the power from the rear axle and transfer it to the rear wheels by way of special gears. Our expert customer support technicians are available Monday through Friday from 7:00 a.m. until 7:00 p.m., CST. always looking for good content to share with * Pro Gears are specifically designed for drag race only. the early housings are ok for the average street performance cars. Nine Inch Rear Axle. When it comes down to actual shafts as well, since the truck lug I have included the narrow 8-inch axles for reference. All the Galaxies I have seen from throughout the 1960s used the 9-inch rear, regardless of engine size. the few cars and early Broncos (and some early trucks) which received The axle tag typically has two lines of numbers and letters stamped on it. for the 1971-1973 Mustangs - cars with 351 engines and up receiving the 9-inch Gross Vehicle Weight ( GVW ) would The same applies to the rear differential. The 7.5 should be plenty adequate for the application you describe, but an 8.8 is best. The additional straddle mount pocket bearing provides additional support to the pinion head during high-torque events. 1964-1971 Falcon, Comet, some 1965-1969 Mustangs or 1964-1967 Ranchero V8 cars. can easily tell this is a 9-inch from the hump in the rear and (2) Learn more. 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. The Ford 8.8-inch axle has the same ring gear mounting distance (see Chapter 7) for all ratios, just like the 9-inch. 28 spline axles are tapered and cannot be shortened and re-splined. There is a huge aftermarket support for this axle design. Variations 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. 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/. If the case has two verticle RIBS ,from top to 1957 no dimples, flat center band up the center of the rear cover, bottom drain plug. in the backside middle and stronger tubes. I put together a whole collection of housings and third members. of course most desirable is the N case, first used on the 427 Galaxies The instructions below will walk you through the steps. 54" The original applications are as follows: 1. The date code is stamped on the tag. The Lincoln LS and Jaguar S-type were equipped with an 8-inch, castaluminum, independent- style carrier. The fourth version did not have the N in the casting on the outside but still retained the rib structure. 67-70 Mustang = 59.25 inches. We have a large selection of gear sets in stock and can recommend the correct . There are a few exceptions that you will see in the Ford Axle code chart. The last set of numbers is the vehicle plant code. Axle length is not always identical from side to side, as many 9-inch applications use an offset center, so you must measure the housing carefully to be able to order the proper axles.
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