ford 9 inch rear end gear ratios chart

ford 9 inch rear end gear ratios chart

Home / Performance Front & Rearends / Parts Department / Ring & Pinion Sets / 9-Inch Ford. earlier housings used in cars from 1957 to mid 1960s tended to be the 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. housings appeared in either 1966 or 1967 with the familiar "Hump" 1. 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. The 8.5- and 8.8-inch gears have even found themselves in the independent-carrier-style axles. 2. GM A-Body Complete 9" Rear End Packages. 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. 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. Snap On vs Daytona, Pittsburgh, ESCO, Husky, More. 8.75, 9.25, Ford 9 inch, and GM's 8.25 inch . Vintage 1980 Yamaha Enticer Snowmobile Revival to Former Glory. One exception to this was found in the trucks up to around 1982. in cars and trucks. Variations A 8300 N. Austin Ave Morton Grove, IL 60053 First, you need to understand some fundamentals of the Ford axles to help guide your quest. 1-wire alternators are perfect for engine swaps or just keeping things simple for your project. 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. duty.And believe it or not, they were also used in some FE equipped Ford There are three versions with external Ns cast in; note the more curved style on the top right. For example: The tag will say: 350 for 3.50:1 ring and pinion gear ratio. duty.And believe it or not, they were also used in some FE equipped Ford We will look at what axle codes are and how to identify the axle ratio from the code. This is a sampling of some of them. The axle was developed to replace the Ford 9-inch axle.This axle is still in production today for a variety of Ford vehicles. are you wanting the listing for the ratio tags? . I have included the narrow 8-inch axles for reference. Again, the overall first-gear ratio with the TH400 and 4.10:1 rear gear would be 10.168:1. Exceptions to this were the ultra Hi performance Boss 302s, smooth backside. For example: more plentiful starting in the early 1970's, many of the units found today housings. socket size and 7/16" fine thread. The 1958s and 1959s have two dimples on either side of the housing and some have drain plugs. there is the letter "N" than this is a NODULAR CASE (GREAT) this the best. 1973 and later cars have a 55 bolt pattern, and the axles cannot be shortened. You can find the axle code on the Safety Standard Certification label information. Fords small block and big block engine families have their share of flexplate differences. 31-spline axles and carriers for most trucks. used the 9-inch rear, regardless of engine size. 31-spline carriers and axle shafts. As part of my research, I went to renowned Currie Enterprises and gathered one of just about every different 9-inch axle variant. 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. This bearing and the casting structure surrounding it need to be carefully inspected as this is a common area for cracks. medianet_height = "250"; When you look on the inside, you see WAB- 4025A. the axle from around the 1957 model year right up until the early 1980s housings also evolved over the years: $(document).ready( function () {$('#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. 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The Ford version uses larger axle shafts and different lube flow strategy. 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. inch diameter all the way to the backing plate, coil housings have upper A Lincoln Versaille rear is a 9" with 28 spline axles, big axle bearings, and disc brakes. carriers both, as well as with the spline count on the axle shafts. It can also help in identifying the axle ratio of your particular vehicle. Typically with just this information, you can cross reference what you need to know about the axle. The same applies to vehicles with codes containing numbers alone. Torsion Axle Vs. 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. Call 800.979.0122, 7am-10pm, everyday. dimples. 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. The 28-tooth axle shafts are typically tapered and cannot be shortened. Ranger Station, Submit 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. This includes the Center Case, the Pinion gear, the ring gear, and the differential or spool. An assortment of Ford 9-inch axle stampings is welded together to create the housing. The The additional straddle mount pocket bearing provides additional support to the pinion head during high-torque events. 1/2 in Ring Gear Bolts: WCN-B: Ford Pass '63-64: 3.50: 9 in: NL4-1/2 in Ring Gear Bolts . in the backside middle and stronger tubes. It is an 8 inch rear axel so many parts interchange with many other years Fords and Mercury's using an 8 inch axel. The primary purpose of this plate is to show you if your vehicle is equipped with a limited-slip to rear-end differential. FMX, three-speed, automatic. While the 8.8 is similar to the 12-bolt, it isnt identical. and Fairlane axle housings are often grouped together because they are the Learn more. middle of case it is a good IRON type IF in the very center of this case Rhodes Race Cars Unwelded Fabricated Rear End Housing Ford 9 in. Produced from 1957 to 1987 by the Ford Motor Company, it was used in full size . It is common to find a 9-inch in a old Falcon or The image below shows the Safety Label of a Ford Truck. GM G-body 78-87 Complete 9" Rear End Package. While the larger offset makes the ring and pinion gears stronger, the additional sliding of the gear teeth creates more heat in the axle. 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. 1960-1967 two dimples, flat center band, oil level hole in the back cover. We offer Ford Racing ring and pinion gear sets in 3.55, 3.73, 4.10 and 4.56:1 gear ratios for solid axles, as well as Motive Gear's 3.90 and 4.30:1 gear sets. actual car posi units, which were primarily 28-spline carriers, can be The Why is the Ford 9in rear end the go to rear axle for street and strip builds for over 70 years? I have a '50 Club Coupe and have experienced this first hand. The rear end width is important on shoebox Fords if you want some selection on wheels. The Mustang Shelby GT housing is an easy one to spot, albeit rare, because it has extreme tapering of the axle tubes at the ends. If you don't know your gear ratio, you can calculate it by taking the number of rear . Ford 9.5 PRO GEAR* *PRO GEAR RATIO PART NO. There were also 8-inch ring gear independent carriers in production. and Fairlane axle housings are often grouped together because they are the All the Galaxies I have seen from throughout the 1960s If you liked this article you will LOVE the full book. In order to verify a nodular unit, you need to look on the inside of the casting. 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. version of the case came into use in 1967 or in subsequent years, but it 56" Here is a picture of the milling machine cutting new spline teeth after the axle has been cut to length. Builder V8 Billys 1966 Ford Fairlane Twin Turbo 427 RestoMod was built for Street and Strip. 70's. Along with the many different brake and wheel end varieties, many different styles of axle shaft ends were manufactured. People tend to be drawn to it like a magnet. 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/. TEETH 1 4.11 79-0097-1 37-9 1 4.29 79-0098-1 30-7 1 4.57 79-0101-1 32-7 2 5.14 79-0109-L 36-7 2 5.17 79-0112-L 31-6 2 5.20 79-0111-L 26-5 For Maximum . When you purchase through links on our site, we may earn an affiliate commission, which supports our community. 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. On this particular third member, the original copper washers that were under the factory fasteners have been discarded as well. Nine Inch Rear Axle. 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. - Rod Stroke Ratio - Stroke Size Rear Gear Requirements - Rear End Gear Ratio Needed - Speed from RPM, Rear & Trans. Thanks. Because Performance Front & Rearends GM Vehicles Differential Gear Ratio Calculator. Ford improved tooth contact of the Ford 9 inch gears by locating its pinion gear lower on the ring gear. The Ford 9-inch is an automobile axle manufactured by Ford Motor Company.It is known as one of the most popular axles in automotive history. 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. SHARE THIS ARTICLE: Please feel free to share this post on Facebook / Twitter / Google+ or any automotive Forums or blogs you read. You Keep in Enter the required Overall Width, Pinion Offset (location), Brake Space and Drum/Rotor thickness to find axle length and housing width. The entire S550 Mustang generation has had 4, due in part to the limited-slip differential option. The letters I and O are skipped to avoid confusion with the numbers one and zero. Theres an easy way to tell an 8-inch apart from a 9-inch. Here is a quick visual summary: The 1957 housings do not have dimples on them and have an oil drain plug. thanks. and trucks throughout the 1970s. common carrier housing found is the C7AW-E. 6. Give us a call at 800-216-1632 to get started. Some even consider these axles to be bulletproof. 1/2 ton 4X4 pickups! threatening to harm employees or others), Lack of adequate text (e.g., symbols, emojis and random letters), Reviews on the product and not the customers Sales or Service experience. This video is a good example of what goes into the process . This is a relatively common issue on these housings. There are 8.5-inch gears installed in these housings for lowerpower vehicle applications. This chart references the connection between the month codes and the actual month. However, the critical aspects of the rear axle are the axle flanges and axle lengths. Another bonus is that the axleshafts are of equal length, so youll Axle Ratio : Axle Ratio : Diesel: 5.13: 4.10: 3.55: Gas: 4.10: 3.55 : Trans Ratio: . Of the four versions of the N case, three have an actual N cast into it right above the pinion cartridge. always looking for good content to share with The Ford 9 inch housing is a semi-floating, drop-out axle. Buyers Guide. Original gear ratios range between 2.79:1 and 5.43:1, and aftermarket replacement gears are available for many ratios as well. The bottom line begins with the ratio being the first set of numbers. determine which axle housing many cars and trucks received. If an L is included, it was equipped with a limited-slip differential or Traction- Lok.

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