ford 9 inch rear end gear ratios chart

The axle housings themselves had many different variations over time as well. Where A=the first number (static reduction), Bi=Gear diameter, Bf=Ring Gear diameter, Cf= (Crown Wheel dia.) Keep in of course most desirable is the N case, first used on the 427 Galaxies Any sufficiently advanced technology is indistinguishable from magic . Variations Measuring from axle flange to axle flange (measurement A in the diagram below) will give you total axle housing width. It is a banjo-style axle as is the 8-inch. 76-77 large bearing. Here is an example of 11 x 2-inch drums brakes with the small bearing size on the left and the large Torino style on the right. With the chart in hand, locate your vehicles axle code on the axle code column. Leaf Spring: The Similarities And Differences, Front Axle Of A Car: Types, Functions, And Replacement, CV Axle Boot: Overview, Signs, And Replacement. 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. Details: Motive Gear . 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. 3. Chevy differentials: how to rebuild the 10- and 12 . Remember to locate the Safety Standard Certification label on the left side door post as you open the door. thanks. The Ford 9-inch has a reputation as a durable axle that can transmit enormous torque, and this is rightfully deserved. Now that you have identified the axle code, let us know the axle ratio. Like the H in our case shows a car with a limited-slip differential. Gear ratios can be quickly changed by removing the axles and driveshaft, unbolting the . Using this data, hopefully you can decide whether you want a 2.73, 3.08, 3.27, 3.55, 3.73, 4.10, or some other gear in your car. But if youre looking for an original, they can be spotted quite readily even without an axle identifycation tag. This pinion shows excessive wear on the trunnion surface and should not be re-used. 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. Standard Ford 9 inch gear sets are primarily used in street applications. The Maverick 8" or Ranger 7.5 and 8.8 are good options. Ford Axle code identification, Read more: Front Axle Of A Car: Types, Functions, And Replacement. Start by opening the left drivers front door. You can find the axle code on the Safety Standard Certification label information. It has more ground clearance than a Dana 60. When it comes down to actual shafts as well, since the truck lug larger wheel bearing housings. This is because the supply is limited to The very rare optional 6 cylinder rear was the 3.50. around 64-65 I believe.They are most often found behind the later 428CJ Ford Rear Axle Assembly Identification - Page 01 . 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 Use this information at your own risk. The first two digits of the axle code identify the ratio and capacity of the rear axle. How do I find the Axle Ratio and Limited Slip? most abundant. 1-wire alternators are perfect for engine swaps or just keeping things simple for your project. The aftermarket has responded to this by offering a plethora of ratios ranging from 2.91 to 6.50:1. We can teach you some of the major differences between the Ford and GM-style T5 Flathead transmission adapter kits. Info To Share? This axle tag belongs to a 1977 F-150. 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. 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. used the 9-inch rear, regardless of engine size. Save my name, email, and website in this browser for the next time I comment. Ranger Station, Submit 74-75 medium duty large bearing, and. For the Ford 9" rear end to be smaller and lighter than a Dana 60, the weight has to come from somewhere. Discount is automatically applied. Get any 3 for $25 plus shipping. 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. The Lincoln Continental style of disc brakes use 11-inch rotors. Note the two lower bolts at 6 and 7 oclock have straight access with a socket. The Ford 9 inch housing is a semi-floating, drop-out axle. But 10.168 / 4.70 (to determine the equivalent rear-gear ratio) equals 2.16:1, which is not realistic. 28 spline axles are tapered and cannot be shortened and re-splined. Some of the heavier cars like the Galaxies also received the 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. Well help you determine the correct flexplate for your Chevy engine in this buyers guide. Measuring for your 9-inch axles requires a few basic measurements to be taken. The straddle-mounted pinion has a roller bearing in the gear case, which provides additional support for the pinion under heavy loads. The smaller 8-inch third member is on the right. 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. Ford intermediates with big blocks. This is by far the most common axle used by restorers, hot rodders, customizers, and racers. There is a gear ratio stamped on the tag. There is typically a stamped steel cover that must be removed to gain access to the internals. You bring the gumption. - as in the Mustang line, most however never received a factory 9-inch). It has enjoyed a long production history with many variants. None of which changes the strength of the axle shaft. The date code is stamped on the tag. inch diameter all the way to the backing plate, coil housings have upper Many aftermarket companies produce 9 Ford equivalent rear axles for the drag racing and hot rod industry. Thanks. All of the 8-inch case nuts can be accessed with a socket. I put together a whole collection of housings and third members. 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! them. Performance Front & Rearends GM Vehicles of course most desirable is the N case, first used on the 427 Galaxies But the 9" is better in a couple respects: It's much lighter than a Dana 60. For a Ford 9 inch rear end, swapping gears is fairly easy as it has a removable third member. The Unless you are building a Pinto or straight six-cylinder vehicle, you want to avoid it. 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 small are 2.835" or just under 3" and the large are 3.150" or just over 3". Calculators. Gross Vehicle Weight ( GVW ) would by Ford exist in the size of the outer axle bearings in the housings and nickel content and better casting than the earlier single ribbed cases it We'll work to keep you motivated and informed and with industry news, product information and reviews, event coverage, and well-curated articles and stories intended to inspire and educate. These axles even have a unique bolt pattern of five on 5 inches. These third members are the strongest of the production cases and the most desired. version of the case came into use in 1967 or in subsequent years, but it Ratings and reviews are provided by customers who have either purchased a vehicle or visited a dealership for service. Power is transmitted from the transmission to rear end 1:1 in high gear. many half ton trucks continued to utilize the 9-inch (both 2 wheel & 4 in cars and trucks. Ford 9 Inch Rear End Gear Ratios Chart1969 impala ss 427 4 speed. 1967-1973 Mustang axles can be identified by wheel flange: Oval hole = 28 splines; Two large holes and counter-sunk center = 31 splines. These variations include different-size drum brakes, disc brakes, and wheel hub arrangements. 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. to the housing, the small bearing housings use 9/16" socket size nuts You will need to look at the Ford axle code chart to replace your Ford rear-end axle parts. These tags are typically quite beat up, twisted, and rusted over the years. Ford non-overdrive transmissions include: C-4, three-speed, automatic. Axle Ford 9 inch rear end identification is easy and can be accomplished with nothing more than a deep socket as a go-no-go gauge for the bottom two retaining nuts on the center section. 9-inch (cars) have a 5-on-5 bolt circle and the axles cannot be shortened. and Fairlane axle housings are often grouped together because they are the Our expert customer support technicians are available Monday through Friday from 7:00 a.m. until 7:00 p.m., CST. It has a square design with four rounded corners and ten bolts. Using the Ford Axle code chart, you will get to negate all these issues with ease. 9-inch complete rear axle is approximately 35 pounds heavier than an 8.8 rear axle with approximately the same components. C-6, three-speed, automatic. The rear-end housing has a vast amount of ford 9-inch gear ratios available. From my piles of rare parts, here is an independent cast-iron 8.8-inch carrier axle. A For example, Ford says the 2018 F-350 Super Duty 4x2 regular cab pickup equipped with the 6.2-liter . 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. and this style of center carrier housing is best suited for drag cars or When it comes down to actual shafts as well, since the truck lug Width: all measurements are flange to flange. This is a major advantage compared to other rear axle systems because disassembly is faster and more convenient. The close-ratio and C4 289HP trans were mated to the 3.50, and occasionally to the 3.89 and 4.11. 8300 N. Austin Ave Morton Grove, IL 60053 It is as easy to cut down as any other 8 or 9 inch Ford axel. The WAR, WAA, and WAB cases have the same ribbing as the N case, but are missing the ever important N feature. in cars and trucks. shafts. We stand behind our products with some of the smartest technicians in the industry. is by far the most abundant case being used in both full size Ford cars The Ford 9 inch rear end is one of the most popular axles in automotive history. You 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. When you look on the inside, you see WAB- 4025A. The Ford Mustang and Thunderbird used this style for a few model years. The case 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 material and heat treating provide excellent wear service life, but doesn't handle shock loads as well as Pro 9 in gears. 100 x 4.12. When you buy through our links, we may get a commission. Fords small block and big block engine families have their share of flexplate differences. for 1965-1966 (the same width as 1964-1965 Falcons and 1962-1965 Fairlanes Cost and complexity are two. You can do this by multiplying by the gear ratio. 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. 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. Since the "Limited slip" or Locking rear end 13 lovely chevy 10 bolt rear end gear ratio chart. GM Tri 5 55-57 Chevy Complete 9" Rear End Package. The "rough" tubes with flat tops, 1969-1977 Galaxies (coils), Lincolns (coils), and late pickups (leaf)- 3.25 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. 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. replaced, and that is why it remained in use for so long. A Read this first! Written by Joe Palazzolo and Republished with Permission of CarTech Inc. In most cases, the tag has been lost. 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. A copy of the Ford Axle Code Chart is linked below in this article. I reference these axles based on the ring gear nominal outside diameter in inches. . Its called a 9 inch because the ring gear measures 9 inches. H. 2.75 locking differential. Since 2011, V6 and V8 Mustangs have used Ford's 8.8" rear end, but before that many used a 7.5" rear. The code, 4L11, tells us that it is a 4.11:1 ratio with a limited-slip or Traction-Lok differential. Some have only one access hole for the backing plate bolts, while others have three. smooth backside. The 7.5 should be plenty adequate for the application you describe, but an 8.8 is best. 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. Install Kits and Gears Sets Listed By Rear End. 4. Repairing a twisted brake or throttle cable with a simple homemade tool in just minutes Easy and functional. The complete guide to master any grease gun, Battery vs. Starter vs. Alternator: How to jumpstart even the most stubborn of car. It was also used in the 1983-1996 full-size Bronco, and E150 Econoline . 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. the axle from around the 1957 model year right up until the early 1980s It was not the only axle used, but was by far one of 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. Our editors pick the products & services we write about. carriers both, as well as with the spline count on the axle shafts. determine which axle housing many cars and trucks received. To determine the axle ratioof your vehicle, locate thetwo-digitaxle code first, then use your vehicle'stowing guide to find the axle ratio that corresponds to that code. Ford 9 inch Gears. How to Narrow a 9 Inch Ford Rear End. This custom axle tag was obviously hand cut as evidenced by the sharp tin-snipped-looking ends and includes DSO, for Dealer Special Order. I have included the narrow 8-inch axles for reference. Pairing your vehicle with the wrong axle components will not only damage your vehicle but cost you a lot down the line. The 10,41 gear ratio is also great for off-road activities . This includes the Center Case, the Pinion gear, the ring gear, and the differential or spool. We'll also walk you through choosing the correct parts in order to make this installation a breeze! N-case. can easily tell this is a 9-inch from the hump in the rear and (2) One exception to this was About | Contact | Terms | Privacy. So rare Ford dropped it after 66, when they also dropped the 7" Equalock. This combined with easy assembly makes it popular for fine-tuning a rear gear for any particular application. 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. housings. This is a relatively common issue on these housings. Our Mopar flexplate buyers guide will help. Also notice the part number and metal axle tag. Why is the Ford 9in rear end the go to rear axle for street and strip builds for over 70 years? 70's. If you need the Rear Axle Ratio for a vehicle produced before 2008, contact ourCustomer Relationship Center via Chat or call us at 800-392-3673. These tags were not that informativeon the early units, so from 1957 to 1962 the tag just referenced axle ratio. 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. It was not the only axle used, but was by far one of Buyers Guide. Visit the RV & Trailer Towing Guides page on the Ford fleet website. Many people are not aware that Ford made a smaller banjo axle and confuse the 8-inch for a 9-inch. Any Ford 9" carrier will fit, as long as it has a fill plug on the side. Find your transmission and rear gear multiplier below. This video is a good example of what goes into the process . 1967-1973 Mustang axles identified by wheel flange: two large holes and counter sunk center - 31 splines. Generally, aftermarket shafts have to be purchased pattern (same as older Jeep), a 65-inch width at the wheel mounting surfaces, You Later the axle from around the 1957 model year right up until the early 1980s Hypoid offset is the distance between the centerline of the pinion and the centerline of the ring gear. For the Ford 9" rear end to be smaller and lighter than a Dana 60, the weight has to come from somewhere. 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!. FMX, three-speed, automatic. But to be correct, it is a 3/4 fl oat. The 1966 Mustang had 14 possible rear gear ratio/differential combinations. Axle Size/Strength Chart; Explained Videos; Tech Articles; 9-Inch Ford. the early housings are ok for the average street performance cars. Ford 8 Ford 9: CLICK FOR MORE INFO. applications due to the demise of most performance engine options in the Learn more. "N Case" was no longer needed for passenger car/truck Of course, if your budget allows, you can purchase an aftermarket iron case that is stronger than any factory case. 3.00, 3.25, and 3.55; so I know at least those ratios were all available from the factory in the 8 inch rears. Ford improved tooth contact of the Ford 9 inch gears by locating its pinion gear lower on the ring gear. medianet_crid = "364974658"; From the arrow, you can see the axle code is H9. The format has changed over the years but mostly follow this sequence:. them. The GoJak wheel dolly makes moving immobile vehicles around your shop easy as place, pump, and push! inches Mustangs A strong 9" with a nodular diff and 31 spline axles is fairly comparable in strength to a stock Dana 60 rear end. You will also learn how to identify the codes in Ford vehicles. The date code on this axle tag is 7AC, and it corresponds to the 7th year, 1st month (January), and 3rd day. allow larger ring gear to fit. popular early swap being the 1957-1959 Ford for the 1965/1966 Mustang. You will need to get your hands on your manufacturers axle code chart for this part. First, you need to understand some fundamentals of the Ford axles to help guide your quest. 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. 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. 2. 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. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not WJ Handy Dad.As an Amazon Associate I earn from qualifying purchases Later It may not be a stock or original Ford 9 inch rear end, but it carries the originals dimensions and specs and for all intents and purposes they are still considered a Ford 9 inch. Come join the discussion about popular models such as the Mustang, Galaxie, Falcon, Fairlane, Torino, Shelby and many more! As part of my research, I went to renowned Currie Enterprises and gathered one of just about every different 9-inch axle variant.

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