ford 9 inch rear end gear ratios chart

General Motors rear end differentials are referred to by the diameter of the ring gear, i.e. There are even different drum brake registers. 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 C-6, three-speed, automatic. This chart serves as a general guideline for axle fl ange-to-fl ange width based on different models and production years. differences, 28-spline car axle shafts are much more abundant than the 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. GM F-Body Complete 9" Rear End Packages. common carrier housing found is the C7AW-E. I'm not responsible for incorrect information, Width: all measurements are flange to flange, Ford Rear Axle Assembly Identification - Page 01 - FORDification.com. Front Axle Codes While the parts catalog says "The third digit of the axle code identifies the ratio and/or capacity of the front axle", that is not true.As seen below, there are only 4 codes (2 - 5) and they do not define the axle ratio nor capacity.In fact, to find the front axle ratio you need the codes off the axle itself, as shown here: used the 9-inch rear, regardless of engine size. for the swap to be performed. Nine Inch Rear Axle. Traditional BOM's are 6 digits followed by 1 or 2 digits and start with the numbers 60 or 61. It was then replaced by the Ford 8.8 inch rear axle. 8. large-bearing semi-floating axles, and many can be found with hefty 31-spline smooth backside. This is a typical axle tag that has been removed from the third member. The Lincoln Continental style of disc brakes use 11-inch rotors. Any of the W-series cases do have a fill plug machined in them. If you are building a 9-inch Ford rear end for your project know you have plenty of options in gear ratios, axles, bearings, brake kits, and much more! If you know your axle tag number, simply go to the second table. more plentiful starting in the early 1970's, many of the units found today 1/2 ton 4X4 pickups! 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. For example: The tag will say: 350 for 3.50:1 ring and pinion gear ratio. 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) . Rusty but Rare 1976 Chevy K10 Sport Truck Revival! For example: The typical 3 inch-diameter tubes can be a bit flimsy in higher-power applications. 289 Hipo cars.The N cases went with 31 spline centers and are for rugged Now that you have identified the axle code, let us know the axle ratio. 1/2 ton 4X4 pickups! Many aftermarket companies produce 9 Ford equivalent rear axles for the drag racing and hot rod industry. This roadster sounds amazing, goes hard and turns heads wherever it goes. - Rod Stroke Ratio - Stroke Size Rear Gear Requirements - Rear End Gear Ratio Needed - Speed from RPM, Rear & Trans. 8300 N. Austin Ave Morton Grove, IL 60053 the best. This includes the Center Case, the Pinion gear, the ring gear, and the differential or spool. GM Truck Complete Rear End Packages. small bearing housing can be differentiated from a large bearing housing How do I find the Axle Ratio and Limited Slip? How To Identify 9 Inch Ford Housings Chart via Speedway Motors. If an L is included, it was equipped with a limited-slip differential or Traction- Lok. Differentials take the power from the rear axle and transfer it to the rear wheels by way of special gears. 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 Hot rodders and drag racers use 9 Ford rear-ends and their aftermarket descendants in just about everything not just Ford cars and trucks. Have 31-spline axles and carriers for most trucks. Differentials, Axles/Drivelines, Book, Using GoJak Wheel Dollies to Easily Move Your Vehicle, Brake Pad Identification and Friction Surface Options Explained, Adapting Tremec's Popular T5 5-speed Manual to Ford's Flathead V8 Engine, Ford And Chevy Spindle Options For Solid Axle Hot Rods, Small Block and Big Block Chevy Engine Flexplate Guide. The Ford 9-inch has a reputation as a durable axle that can transmit enormous torque, and this is rightfully deserved. and Fairlane axle housings are often grouped together because they are the Here is an example of such a unit. Now you can see the C4AW-4025-B part number on the lower left unit, which verifies it as a nodular unit. This combined with easy assembly makes it popular for fine-tuning a rear gear for any particular application. 100 x 4.12. if one wants to use a 31-spline truck carrier in a car. It has been said that it has a higher But if youre looking for an original, they can be spotted quite readily even without an axle identifycation tag. This is a sampling of some of them. The third reason was basic health and safety concerns for the assembly technicians and other employees who handled the axles in the manufacturing and assembly plants. This is when making a few phone calls to reputable axle builders can be helpful. The 8.8 is a traditional semi-fl oat Salisbury axle with C-washers for axle retention. with 3/8" fine thread, while the larger bearing use 11/16" at car swap meets and shows are the units pulled from trucks with the common carrier housing found is the C7AW-E. From my piles of rare parts, here is an independent cast-iron 8.8-inch carrier axle. Mustangs and Fairlanes. I put together a whole collection of housings and third members. It's . 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. The date code on this axle tag is 7AC, and it corresponds to the 7th year, 1st month (January), and 3rd day. The 8.8" rear end is flat on the top and the bottom as well as the left and right. Original ratios are 2.47, 2.50, 2.75 or 3.0 with the 2.50 being the most common. We stand behind our products with some of the smartest technicians in the industry. station wagons-cars with 351 and up engines received 9-inch units - as did 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. A 7.5 inch, 8.5 inch, 10.5 inch. Give us a call at 800-216-1632 to get started. 1958-1959 two dimples on the back of housing, flat center band, some had drain holes. Any Ford 9" carrier will fit, as long as it has a fill plug on the side. The 8.5- and 8.8-inch gears have even found themselves in the independent-carrier-style axles. The axle housings themselves had many different variations over time as well. The WAR, WAA, and WAB cases have the same ribbing as the N case, but are missing the ever important N feature. pattern in most cases differed from the car, and due to the bearing size Comet that has had a HIPO SMALL block with 31-splines and a locker. 74-75 medium duty large bearing, and. The bottom line begins with the ratio being the first set of numbers. How to Narrow a 9 Inch Ford Rear End. 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. for 1965-1966 (the same width as 1964-1965 Falcons and 1962-1965 Fairlanes Then take that answer and divide it by 100% and then multiply it by itself to find out what gears/axles you need to run to achieve the desired tire size. can tell this is a 9-inch from the removable carrier on the front. It allows for the pinion side Center Section to be removed. The middle number is the ring gear diameter in inches, typically an 8 or 9. Vintage 1980 Yamaha Enticer Snowmobile Revival to Former Glory. but the link i was refering to listed codes by year and model. The 7.5" rear end is also flat on top and bottom. Tip: To search theTowing Guide, press CTRL + Fto open a search box in your browser. 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). Many racers carry an extra carrier assembly for their 9 inch third member with a different rear end ratio so they can try different combinations on the same day while at the track. Refer to the Axle Ratio table to determine your rear axle ratio and Limited Slip. The same applies to the rear differential. Read this first! housings. 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. SHARE THIS ARTICLE: Please feel free to share this post on Facebook / Twitter / Google+ or any automotive Forums or blogs you read. Read more: CV Axle Boot: Overview, Signs, And Replacement. Note that most, but not all, applications will usually have one axle longer than the other due to an offset center section, so don't just measure one side and assume the other is the same. medianet_crid = "364974658"; You can do this by multiplying by the gear ratio. The transmission yokes are CNC machined to assure concentricity and balance for ideal driveshaft operation. widths I keep in mind for Mustangs are the following: Our editors pick the products & services we write about. There is a gear ratio stamped on the tag. Some axle shafts can be shortened and a new spline machined in place. 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These axles even have a unique bolt pattern of five on 5 inches. It is as easy to cut down as any other 8 or 9 inch Ford axel. Some have only one access hole for the backing plate bolts, while others have three. Both axles share a common design and are often referred to as banjo style or third-member style. medianet_width = "300"; truck housings received even beefier center carrier housings and tubes, A simple formula to calculate Gear Ratio or Axle Ratios. It's uncertain if this E widths I keep in mind for Mustangs are the following: 52" This is an easy way to identify the third members, so youre sure to buy the correct axle. This additional bearing and, more importantly, the necessary casting support structure is what drives the larger hypoid offset. Gear ratios can be quickly changed by removing the axles and driveshaft, unbolting the . Ford Differential Axle Codes. 70's. Some of the heavier cars like the Galaxies also received the allow larger ring gear to fit. wheel drives) right up until about 1982, these housings are by far the With 568 Ford 9 Inch Parts for sale, you're sure to find the ideal parts . The axle was developed to replace the Ford 9-inch axle.This axle is still in production today for a variety of Ford vehicles. 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. 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. You 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). is by far the most abundant case being used in both full size Ford cars If you liked this article you will LOVE the full book. Our experts will help you find the correct ring and pinion set for your particular application. 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. It is still used in NASCAR racing as well. 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. by Ford exist in the size of the outer axle bearings in the housings and can easily tell this is a 9-inch from the hump in the rear and (2) Axle Ratio : Axle Ratio : Diesel: 5.13: 4.10: 3.55: Gas: 4.10: 3.55 : Trans Ratio: . CASE" The format has changed over the years but mostly follow this sequence:. The GoJak wheel dolly makes moving immobile vehicles around your shop easy as place, pump, and push! 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. Most of the later trucks These used what is referred to as a 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. WJ Handy Dad recommends safe practices when working on vehicles/homes and or with tools seen or implied in this video. 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. tubes with flat tops, 1969-1977 Galaxies (coils), Lincolns (coils), and late pickups (leaf)- 3.25 52" Fords small block and big block engine families have their share of flexplate differences. It Builder V8 Billys 1966 Ford Fairlane Twin Turbo 427 RestoMod was built for Street and Strip.