ford 9 inch rear end gear ratios chart

The small are 2.835" or just under 3" and the large are 3.150" or just over 3". 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. Here is a picture of the milling machine cutting new spline teeth after the axle has been cut to length. The aftermarket Daytona-style pinion cartridge accommodates the larger and stronger pinion head bearing. 2. 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. 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. It's important to know the friction quality and pad size before selecting a new set of disc brake pads. Code Application Ring Gear And Pinion NL or L Axle Shaft Splines Additional Information; Ratio: Diameter of RG: WGA-A: Lincoln Mark Series '69-'71 Thunderbird '69-70: 2.80: 9 3/8: NL: 31-WGA-B: Lincoln Mark Series '69-'71 Since the "Limited slip" or Locking rear end Aftermarket vendors are actually re-casting these cases in very strong nodular iron, so more often than not it is easiest just to purchase a new case. 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. The unit on the top left seems to be nodular iron but requires a little more investigation to verify. The axle code in our example, H9, has a specific meaning. determine which axle housing many cars and trucks received. 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 axle tag typically has two lines of numbers and letters stamped on it. This strengthens the whole rear end assembly. 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. 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. 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. of course most desirable is the N case, first used on the 427 Galaxies A You will need to get your hands on your manufacturers axle code chart for this part. 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. 56" 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!. Strange engineering offers a variety of steel retainer plates to be used with drum and some disc brake applications. I have included the narrow 8-inch axles for reference. popular early swap being the 1957-1959 Ford for the 1965/1966 Mustang. Ironically, 8.0-inch independent carriers were made in cast iron. replaced, and that is why it remained in use for so long. 1958-1959 two dimples on the back of housing, flat center band, some had drain holes. for the 1971-1973 Mustangs - cars with 351 engines and up receiving the 9-inch in the backside middle and stronger tubes. Most 1972 and earlier 31-tooth spline shafts can be shortened and 1973 and later versions typically cannot be resplined. 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 There are even different drum brake registers. This is a major advantage compared to other rear axle systems because disassembly is faster and more convenient. . determine which axle housing many cars and trucks received. In 1963, Ford includedmore information. I have a '50 Club Coupe and have experienced this first hand. The Ford Explorer uses an independentstyle Carrier made out of cast aluminum. The Fora platform includes forum software by XenForo. is the strongest factory case made BY FORD!!! earlier housings used in cars from 1957 to mid 1960s tended to be the Chevy differentials: how to rebuild the 10- and 12 . Torsion Axle Vs. - Rod Stroke Ratio - Stroke Size Rear Gear Requirements - Rear End Gear Ratio Needed - Speed from RPM, Rear & Trans. The Daytona- style cartridge allows for a larger pinion head bearing when compared to the standard pinion cartridge. wheel drives) right up until about 1982, these housings are by far the One exception to this was Axles were similar to the Ford 9-inch 28-spline units. with 3/8" fine thread, while the larger bearing use 11/16" A Lincoln Versaille rear is a 9" with 28 spline axles, big axle bearings, and disc brakes. 61.25 inches, 1967-1971 Comets, Cougars, Fairlanes 59.25 inches, 1967-1973 medium and big block Mustangs and Cougars, 1966-1971 Fairlanes, Torinos, Montegos, Comets, and other 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. 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. - as in the Mustang line, most however never received a factory 9-inch). Like the H in our case shows a car with a limited-slip differential. Generally, aftermarket shafts have to be purchased This chart applies to all Ford non-overdirve transmissions, manual and automatic. Written by Joe Palazzolo and Republished with Permission of CarTech Inc. Select the Towing Guide for your vehicle's model year. i.e. The popular early swap being the 1957-1959 Ford for the 1965/1966 Mustang. These were used sporadically until about 1969. The ring and pinion are then accessed, also from the front, by removing another 10 bolts. The 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. Visit the RV & Trailer Towing Guides page on the Ford fleet website. 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. These tags were not that informativeon the early units, so from 1957 to 1962 the tag just referenced axle ratio. The Ford Axle code will also help you identify your particular models engine capacity and the year/vehicle make. Here is a quick visual summary: The 1957 housings do not have dimples on them and have an oil drain plug. 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. station wagons-cars with 351 and up engines received 9-inch units - as did Many people prefer to just call it the Ford 9-inch-style wheel end. The The Final Drive Ratio shows you how many times the engine turns for one complete turn of the tires. 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. CLICK HERE to see a complete listing of front axle codes). Boss 429s, 427s, 428 CJ/SCJ and the 429 cars which received the Mismatching issues are a big problem when it comes to automotive repairs. (often referred to as a "POSI") came to be a popular option and replaced, and that is why it remained in use for so long. 3. The Ford 8.8-inch axle has a cast center section and the internal components are installed from the rear. (See Chapter 8 for how to install a 9-inch in a classic 1957 Chevy Bel Air as a performance upgrade.). If there is an "L" in between, you should have a locking or limited slip differential. (often referred to as a "POSI") came to be a popular option and The Ford 8.8-inch axle has the same ring gear mounting distance (see Chapter 7) for all ratios, just like the 9-inch. thanks. You 6. 4. These tags provided information for the service technicians but wasnt that important for the vehicle assembly plants. However, the critical aspects of the rear axle are the axle flanges and axle lengths. 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. This chart references the connection between the month codes and the actual month. Some of the heavier cars like the Galaxies also received the T & C FORD TOP LOADER 4 SPEED WIDE RATIO 2ND GEAR 31 TOOTH showing . But the 9" is better in a couple respects: It's much lighter than a Dana 60. it was very complete. if one wants to use a 31-spline truck carrier in a car. Check it out. "N Case" was no longer needed for passenger car/truck The rear-end housing has a vast amount of ford 9-inch gear ratios available. most abundant. 1973-1979 Ford Truck Rear Axle Codes. Rearend/Axle Length Calculator. 1/2 ton 4X4 pickups! Because to the housing, the small bearing housings use 9/16" socket size nuts Read this first! With 568 Ford 9 Inch Parts for sale, you're sure to find the ideal parts . Some have only one access hole for the backing plate bolts, while others have three. 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. That is your vehicles axle code. 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. Ford non-overdrive transmissions include: C-4, three-speed, automatic. and this style of center carrier housing is best suited for drag cars or GM G-body 78-87 Complete 9" Rear End Package. GM F-Body Complete 9" Rear End Packages. The large bearing size was available with fi ve different brake drum widths. This is when making a few phone calls to reputable axle builders can be helpful. by the size of the nuts and thread used to retain the brake backing plates widths I keep in mind for Mustangs are the following: 52" This is by far the most common axle used by restorers, hot rodders, customizers, and racers. If you liked this article you will LOVE the full book. 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. common carrier housing found is the C7AW-E. Restoration matching issues will be avoided since the right optioned components will be used to make the restoration. Ford Aerostar: The 8.8-Inch axle . earlier housings used in cars from 1957 to mid 1960s tended to be the 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. Ranger 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. Now that you have identified the axle code, let us know the axle ratio. same width, but the distance between spring perches is different between Locate the Safety Compliance Certification Label on the driver's side front or rear door panel. This format is also applicableto casting date codes. Automotive Technical and Reference Information, Project Cars, Trucks and Salvage Vehicles For Sale, 1967-1970 Mustang, Fairlane, Comet, Cougar, 1967-1971 Comet, Cougar, Mustang, Fairlane, 1967-1973 Mustang, Torino, Ranchero, Fairlane, 1967-1973 medium and big block Mustang and Cougar, 1966-1971 Fairlane, Torino, Montego, Comet, and other Fords with big-block engines, 1977-1981 Lincoln Versailles and Trucks .

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