*** SELECT GEAR RATIO FOR PRICE *** Categories. Some axle shafts can be shortened and a new spline machined in place. dimples. Call us at (864) 843-9275. You can install a true 9-inch gear in these housings as well. Ford rear ends, or differentials, were manufactured by either the Dana Corporation or Ford. determine which axle housing many cars and trucks received. Some of the heavier cars like the Galaxies also received the 1. The The larger offset is better for strength and noise but worse for sliding and efficiency. Careful aftermarket shops and their stringent attention to repairing these housings are able to correct many of these issues. Buyers Guide. All the Galaxies I have seen from throughout the 1960s First, you need to understand some fundamentals of the Ford axles to help guide your quest. The Godfather of Performance Axles-The Venerable Ford 9-Inch, Ford 9-Inch Axle And Bearing Retainer Retains The Axle In Case of Breakage, Checking A Ford Axle With a Deep Socket To Confirm If It Is a 8-Inch or 9-Inch, Ford 9-Inch Rear End Axle Flange Identification, Measuring a Ford 9-Inch Axle Housing and Axle Lengths. You are looking for a nodular iron case, with its telltale N cast into the front or inside wall. This is an example of the only Ford 9-inch version that utilized one-piece tubes. The Ford 8.8-inch is very similar to the General Motors (GM) 878-inch, 12-bolt axle. Find the two-digit code under AXLE. The tags were replaced with adhesive labels that are placed around the axle tube near the brake and wheel end. No. For the Ford 9" rear end to be smaller and lighter than a Dana 60, the weight has to come from somewhere. GM X-Body Nova Complete Rear End Packages. The desirable N-style, nodular-iron gear cases are available in four different versions. Ford 9-inch can be found under 1974-1986 F-150s and 1978-1986 Broncos. Select the Towing Guide for your vehicle's model year. Produced from 1957 to 1987 by the Ford Motor Company, it was used in full size . Gears / Diffs / Install Kits Listed By Vehicle, Standard Gears & Pro Gears Dana / Ford / GM / Mopar, Strange T-Shirts. Have Dont be surprised if the tag you have does not exactly match this. The nickel content and better casting than the earlier single ribbed cases it Install Kits and Gears Sets Listed By Rear End. 800-646-6718. housings appeared in either 1966 or 1967 with the familiar "Hump" the Broncos from 1966 to 1977, they stayed with the 28-spline units. Tip: To search theTowing Guide, press CTRL + Fto open a search box in your browser. applications due to the demise of most performance engine options in the Our experts will help you find the correct ring and pinion set for your particular application. 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/. found in the trucks up to around 1982. FMX, three-speed, automatic. The Ford 10.25-Inch Rear Axle Replaced The Dana 70 After 1985. The Ford 9-inch can be found under 1974-1986 F-150s and 1978-1986 Broncos. Later Your email address will not be published. Thanks. The first table is the code and gear ratio. We'll also walk you through choosing the correct parts in order to make this installation a breeze! pattern (same as older Jeep), a 65-inch width at the wheel mounting surfaces, While the 8.8 is similar to the 12-bolt, it isnt identical. Along with the many different brake and wheel end varieties, many different styles of axle shaft ends were manufactured. 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. This pinion has the tapered bearings and collapsible spacer in place. The ranger truck works good with a 9-inch from a is by far the most abundant case being used in both full size Ford cars And you can find the axle code charts on the internet from your manufacturer. This is when making a few phone calls to reputable axle builders can be helpful. 56" The bar code is present on this unit as well, although later axles just carry the bar code and the metal tag is no longer required. About | Contact | Terms | Privacy. People tend to be drawn to it like a magnet. How To Recognize 9-Inch Housing Would very much apreciate it if someone would post it again. Besides the styling of the Ford Edsel, even the axle shafts were very unusual. Amateur restorer. Axle 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. We have a large selection of gear sets in stock and can recommend the correct . Measuring for your 9-inch axles requires a few basic measurements to be taken. The Lincoln LS and Jaguar S-type were equipped with an 8-inch, castaluminum, independent- style carrier. I'm not responsible for incorrect information, Width: all measurements are flange to flange, Ford Rear Axle Assembly Identification - Page 01 - FORDification.com. For a Ford 9 inch rear end, swapping gears is fairly easy as it has a removable third member. This strengthens the whole rear end assembly. This video is a good example of what goes into the process . (often referred to as a "POSI") came to be a popular option and for the 1971-1973 Mustangs - cars with 351 engines and up receiving the 9-inch 13 lovely chevy 10 bolt rear end gear ratio chart. if one wants to use a 31-spline truck carrier in a car. more plentiful starting in the early 1970's, many of the units found today Original gear ratios range between 2.79:1 and 5.43:1, and aftermarket replacement gears are available for many ratios as well. H. 2.75 locking differential. the few cars and early Broncos (and some early trucks) which received in cars and trucks. 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. When narrowing a Ford 9 inch rear end, the first step is determining the overall length you need. There are four versions of the nodular iron third members that were produced from the factory. at car swap meets and shows are the units pulled from trucks with the There are even different drum brake registers. Finding the location of this certification plate is easy. differences, 28-spline car axle shafts are much more abundant than the and trucks throughout the 1970s. 9-Inch Standard Ring And Pinion Gear Sets (3.00 to 6.50 Ratios) $240.00. determine which axle housing many cars and trucks received. The 1958s and 1959s have two dimples on either side of the housing and some have drain plugs. small bearing housing can be differentiated from a large bearing housing With the chart in hand, locate your vehicles axle code on the axle code column. If the case has two verticle RIBS ,from top to The large 9-inch diameter ring gear (where the axle derives its name from), combined with its offset to the pinion gear makes for a larger ring and pinion contact surface area, increasing strength. around 64-65 I believe.They are most often found behind the later 428CJ Once you have identified the label, locate the word AXLE under the bar code section. Here is a picture of the milling machine cutting new spline teeth after the axle has been cut to length. Axles were similar to the Ford 9-inch 28-spline units. large-bearing semi-floating axles, and many can be found with hefty 31-spline 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. The 8.5- and 8.8-inch gears have even found themselves in the independent-carrier-style axles. The entire S550 Mustang generation has had 4, due in part to the limited-slip differential option. 67-71 Comet, Cougar, Mustang, Fairlane = 59.25 inches. Variations them. Select the Towing Guide for your vehicle's model year. It is underneath one of the nuts that holds the third member in place. Ford intermediates with big blocks. Most of the later trucks The Ford chart below contains a general decoder system for Ford pickup from the 1980s till the 1990s. 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). Many aftermarket companies produce 9 Ford equivalent rear axles for the drag racing and hot rod industry. Snap On vs Daytona, Pittsburgh, ESCO, Husky, More. What Is Car Battery Voltage And Why Is It Important? Ford trucks and cars from 1968 onwards are equipped with the Ford Axle codes, which are clearly indicated on the certification plate. Ford improved tooth contact of the Ford 9 inch gears by locating its pinion gear lower on the ring gear. smooth backside. This chart applies to all Ford non-overdirve transmissions, manual and automatic. Locate the Safety Compliance Certification Label on the driver's side front or rear door panel. 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Another bonus is that the axleshafts are of equal length, so youll The Ford 9 inch housing is a semi-floating, drop-out axle. if so is this what you are looking for. Builder V8 Billys 1966 Ford Fairlane Twin Turbo 427 RestoMod was built for Street and Strip. Axle Ratio : Axle Ratio : Diesel: 5.13: 4.10: 3.55: Gas: 4.10: 3.55 : Trans Ratio: . Give us a call at 800-216-1632 to get started. Also notice the part number and metal axle tag. Use this information at your own risk. It is common to find a 9-inch in a old Falcon or For a better experience, please enable JavaScript in your browser before proceeding. Since 2011, V6 and V8 Mustangs have used Ford's 8.8" rear end, but before that many used a 7.5" rear. It is a column with the label AXLE on top and the Axle Code at the bottom. The Ford version uses larger axle shafts and different lube flow strategy. 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. 31-spline carriers and axle shafts. Read more: CV Axle Boot: Overview, Signs, And Replacement. 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. 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. 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 wood and natural gas. for it. duty.And believe it or not, they were also used in some FE equipped Ford truck housings received even beefier center carrier housings and tubes, always looking for good content to share with Like the H in our case shows a car with a limited-slip differential. 74-75 medium duty large bearing, and. CASE" A Lincoln Versaille rear is a 9" with 28 spline axles, big axle bearings, and disc brakes. Ford non-overdrive transmissions include: C-4, three-speed, automatic. The close-ratio and C4 289HP trans were mated to the 3.50, and occasionally to the 3.89 and 4.11. Any sufficiently advanced technology is indistinguishable from magic . Most have the two driving holes for the manufacturing process while one has a more square looking drive end. 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. 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. differences, 28-spline car axle shafts are much more abundant than the 8. We can teach you some of the major differences between the Ford and GM-style T5 Flathead transmission adapter kits. You will need to get your hands on your manufacturers axle code chart for this part. 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. The case 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. 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. 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 Lincoln Continental style of disc brakes use 11-inch rotors. narrowed rear ends due to the added strength in the middle. Rear ends with 3.42 gears usually come in 8.2 and 8.6-inch units, Rear ends with 3.73 gears come in 8.5 8.6-inch units Best Gear Ratio For Your GM 10 Bolt. with 3/8" fine thread, while the larger bearing use 11/16" 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. Hypoid offset is the distance between the centerline of the pinion and the centerline of the ring gear. diameter bolt circle, 1967-1973 Torinos, Rancheros, Fairlanes 59.25 inches or 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. Exceptions to this were the ultra Hi performance Boss 302s, Calculators. This strengthens the whole rear end assembly. Info To Share? 76-77 large bearing. Ring Gear/Pinion Gear Teeth to Gear Ratio. This is 2.25 inches for the Ford 9-inch and 1.5 inches for the 8.8-inch axle. Paint gmc dupont charts reference chart 1956 1959. Generally most cars received the small axle bearings and 28-spline axle The GoJak wheel dolly makes moving immobile vehicles around your shop easy as place, pump, and push! Traditional BOM's are 6 digits followed by 1 or 2 digits and start with the numbers 60 or 61. It also has a 9-inch ring gear. for the swap to be performed. I have a '50 Club Coupe and have experienced this first hand. Refer to the Axle Ratio table to determine your rear axle ratio and Limited Slip. In most cases, the tag has been lost. 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. Ford Differential Axle Codes. The cast-iron third member is installed from the front of the housing. The Ford 8.8-inch axle has a cast center section and the internal components are installed from the rear. Generally, aftermarket shafts have to be purchased popular early swap being the 1957-1959 Ford for the 1965/1966 Mustang. can get your submission posted and acknowledged Axle There are also unique domestic special-option tags, which dont follow the format. These tags are typically quite beat up, twisted, and rusted over the 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 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. Typically with just this information, you can cross reference what you need to know about the axle. The 9 Ford rear axle, so called because of a 9 ring gear diameter, is the choice of many circle track racers because of its strength, availability and ease of maintenance. For example: The tag will say: 350 for 3.50:1 ring and pinion gear ratio. 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. Rusty but Rare 1976 Chevy K10 Sport Truck Revival! In order to allow for the additional straddle mounted bearing and casting support structure, the hypoid offset needs to be large enough to clear the differential case. 1964-1971 Falcon, Comet, some 1965-1969 Mustangs or 1964-1967 Ranchero V8 cars. It is still used in NASCAR racing as well. earlier housings used in cars from 1957 to mid 1960s tended to be the 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. The original carrier is normally equipped with a CV joint flange, which can be replaced with a U . It was then replaced by the Ford 8.8 inch rear axle. If measuring the drum-to-drum distance, add .200-inch to these values. This chart references the connection between the month codes and the actual month. and 429CJ cars.From what I have seen don't expect to find them in 390 or The 9-inch third-member bottom fasteners, on the left, can only be accessed with a wrench. The Ford 9-inch has a reputation as a durable axle that can transmit enormous torque, and this is rightfully deserved. GM F-Body Complete 9" Rear End Packages. Proceed to match the code with its corresponding Axle Ratio column on the table to find the ratio. Calculate your differential gear ratio from RPM, tire size and desired MPH. 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. While the iron is molten, magnesium is added to increase the shear strength of the alloy. Some even consider these axles to be bulletproof. This format is also applicableto casting date codes. 1958-1959 two dimples on the back of housing, flat center band, some had drain holes. Here is an example to help you through. allow larger ring gear to fit. inches These axles did have metal axle tags similar to the 9-inch axles but they were slowly phased out as vehicle programs were updated. 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. 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. On this particular third member, the original copper washers that were under the factory fasteners have been discarded as well. Any of the W-series cases do have a fill plug machined in them. 8300 N. Austin Ave Morton Grove, IL 60053 These labels have a specific code that is similar to the axle code on the 9-inch axles. Gear Ratios Drag Strip Performance - 1/8 Mile Horsepower Requirements from MPH - 1/8 Mile Horsepower Requirements from ET - 1/8 Mile ET from MPH - MPH - Km/H in 1/4 Mile using Horsepower The original applications are as follows: 1. The bearing cups are in the pinion cartridge and the third bearing trunnion roller bearing is located in the gear case. Boss 429s, 427s, 428 CJ/SCJ and the 429 cars which received the The 8.8" rear end is flat on the top and the bottom as well as the left and right. Of course, if your budget allows, you can purchase an aftermarket iron case that is stronger than any factory case. The later It was not the only axle used, but was by far one of carriers both, as well as with the spline count on the axle shafts. 4. A forum community dedicated to Ford performance owners and enthusiasts. When it comes down to actual shafts as well, since the truck lug From my piles of rare parts, here is an independent cast-iron 8.8-inch carrier 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. version of the case came into use in 1967 or in subsequent years, but it This not easily accomplished with integral carrier axles, like the GM 10- and 12-bolt. Find the word AXLE under the bar code. The Ford 9.5 PRO GEAR* *PRO GEAR RATIO PART NO. 65-66 Mustang = 57.25 inches. 1967-1973 Mustang/Cougar - light duty, thinnest housing material, small axle 1972 and earlier, 31 spline axles have the ability to be shortened. Unless you are building a Pinto or straight six-cylinder vehicle, you want to avoid it. 1967-1973 Mustang axles identified by wheel flange: two large holes and counter sunk center - 31 splines. 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. 1-wire alternators are perfect for engine swaps or just keeping things simple for your project. Its called a 9 inch because the ring gear measures 9 inches. If the socket fits (as shown in our photo below) it is a Ford 8-inch housing. The rear-end housing has a vast amount of ford 9-inch gear ratios available. Because to the housing, the small bearing housings use 9/16" socket size nuts The 8-inch also was only available with 28-tooth axle shafts. Note: Rear axle ratios are available for 2008 and newer models. 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. This custom axle tag was obviously hand cut as evidenced by the sharp tin-snipped-looking ends and includes DSO, for Dealer Special Order. These used what is referred to as a 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. widths I keep in mind for Mustangs are the following: The 9-inch ring and pinion is front-loaded into the rear end housing. 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. popular early swap being the 1957-1959 Ford for the 1965/1966 Mustang. Both standard and W-series cases are made out of gray cast iron. socket size and 7/16" fine thread. in cars and trucks. can easily tell this is a 9-inch from the hump in the rear and (2) For instance, if both the engine and transmission deliver up to 100 ft./lbs. You are correct sir, these are the standard ratios for 65-66. The 9-inch housing's center section will not allow the socket to clear, and . . The rear end width is important on shoebox Fords if you want some selection on wheels. The instructions below will walk you through the steps. The primary purpose of this plate is to show you if your vehicle is equipped with a limited-slip to rear-end differential. Torsion Axle Vs. Generally, aftermarket shafts have to be purchased These were used sporadically until about 1969. Comet that has had a HIPO SMALL block with 31-splines and a locker. Find your transmission and rear gear multiplier below. 100 x 4.12. the best. The It has more ground clearance than a Dana 60. Because of their strength, youll see these 9 inch rear ends used in just about every make of car, truck, and customs. Remember to locate the Safety Standard Certification label on the left side door post as you open the door. Axle Size/Strength Chart; Explained Videos; Tech Articles; 9-Inch Ford. are you wanting the listing for the ratio tags? It was not the only axle used, but was by far one of SHARE THIS ARTICLE: Please feel free to share this post on Facebook / Twitter / Google+ or any automotive Forums or blogs you read. This pinion shows excessive wear on the trunnion surface and should not be re-used. Like the 9-inch, the 8-inch uses no carrier breaks, meaning you can put a 5.43:1 ring and pinion in a 2.79:1 rear without changing to a smaller differential carrier. 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.