Keep in In the early days of hot rodding, with the majority of hot rods being Fords, it stands to reason the '30s and '40s Ford "banjo" rearend dominated the scene. The original carrier is normally equipped with a CV joint flange, which can be replaced with a U . The Ford 8.8-inch axle has a cast center section and the internal components are installed from the rear. 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). mind as mentioned, the Fairlane spring perch distances were not the same There are three versions with external Ns cast in; note the more curved style on the top right. 1973-1979 Ford Truck Rear Axle Codes. We're Therefore, these axle assemblies require better quality oil and good underbody airflow to keep the unit cool. When narrowing a Ford 9 inch rear end, the first step is determining the overall length you need. The instructions below will walk you through the steps. (It was later used for pick-ups and Broncos.) Its called a 9 inch because the ring gear measures 9 inches. Now you can see the C4AW-4025-B part number on the lower left unit, which verifies it as a nodular unit. 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 of the transmission and then reverse it to show engine RPM for every 10mph and each transmission gear. Learn how to hook up a 1-wire alternator on your vehicle. housings appeared in either 1966 or 1967 with the familiar "Hump" 1957 no dimples, flat center band up the center of the rear cover, bottom drain plug. it was very complete. Our editors pick the products & services we write about. The very rare optional 6 cylinder rear was the 3.50. the axle from around the 1957 model year right up until the early 1980s When measuring from the top left bolt to the bottom left bolt, the 8.8" rear end will measure 11" from bolt to bolt. Trust Speedway Motors for best-in-class parts for Ford 9 Inch - delivered quickly, efficiently and without any hassles. We have a large selection of gear sets in stock and can recommend the correct . This chart applies to all Ford non-overdirve transmissions, manual and automatic. Since the "Limited slip" or Locking rear end 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. The fourth version did not have the N in the casting on the outside but still retained the rib structure. The 8.8" rear end is flat on the top and the bottom as well as the left and right. Variations Our Mopar flexplate buyers guide will help. Locate the Safety Compliance Certification Label on the driver's side front or rear door panel. We provide how-to and technical articles, vehicle and build features and examples, plus calculators and lookups that will help you get your ride from dream to driver. 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. If you are fortunate enough to find an axle with the identification tag still attached, it will help solve part of the mystery of what application the axle came from and what might still be inside. Details: Motive Gear . Some have only one access hole for the backing plate bolts, while others have three. The Final Drive Ratio shows you how many times the engine turns for one complete turn of the tires. Most of The axle housings themselves had many different variations over time as well. The axle tag typically has two lines of numbers and letters stamped on it. Some axle shafts can be shortened and a new spline machined in place. This roadster sounds amazing, goes hard and turns heads wherever it goes. This is an example of the only Ford 9-inch version that utilized one-piece tubes. The 28-tooth axle shafts are typically tapered and cannot be shortened. them. Find the word AXLE under the bar code. Both axles share a common design and are often referred to as banjo style or third-member style. Ford 9 inch Gears. There is a machined roller bearing race on the pinion head portion that points at the differential opposite thetapered bearing races. The Ford 8.8-inch is very similar to the General Motors (GM) 878-inch, 12-bolt axle. Rearend/Axle Length Calculator. Watch the video for all the details and you'll wonder why your shop hasn't had a set sooner! Buyers Guide. 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 While the 8.8 is similar to the 12-bolt, it isnt identical. the early housings are ok for the average street performance cars. GM A-Body Complete 9" Rear End Packages. some 302 4V cars with optional gear ratios). A strong 9" with a nodular diff and 31 spline axles is fairly comparable in strength to a stock Dana 60 rear end. The 8.5- and 8.8-inch gears have even found themselves in the independent-carrier-style axles. mind as mentioned, the Fairlane spring perch distances were not the same Torsion Axle Vs. 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. Another bonus is that the axleshafts are of equal length, so youll control arm mount. Written by Joe Palazzolo and Republished with Permission of CarTech Inc. In 1963, Ford includedmore information. This is a typical axle tag that has been removed from the third member. 66-75 large bearing, 3. It was then replaced by the Ford 8.8 inch rear axle. An assortment of Ford 9-inch axle stampings is welded together to create the housing. This is 2.25 inches for the Ford 9-inch and 1.5 inches for the 8.8-inch axle. Mismatching issues are a big problem when it comes to automotive repairs. So, after crawling under just over 50 Cars, trucks etc at the local Upull, I found that a 1995 2wd 2.3 Ranger has the correct length driveshaft at 47.5".chevy truck driveshaft length chart. The 1958s and 1959s have two dimples on either side of the housing and some have drain plugs. On some tags, the first 2 digits don't appear on the tag, but they must be used to identify the axle. same width, but the distance between spring perches is different between As part of my research, I went to renowned Currie Enterprises and gathered one of just about every different 9-inch axle variant. 800-646-6718. * Coupon does not apply to Oval Size Matters T-Shirt. Later It is the one most commonly Again, the overall first-gear ratio with the TH400 and 4.10:1 rear gear would be 10.168:1. Once you have identified the label, locate the word AXLE under the bar code section. Notice that the date code is C9UA with the ring gear size of 8.7. Using the Ford Axle code chart, you will get to negate all these issues with ease. 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. This additional bearing and, more importantly, the necessary casting support structure is what drives the larger hypoid offset. These axles even have a unique bolt pattern of five on 5 inches. When you buy through our links, we may get a commission. i.e. Gear ratios can be quickly changed by removing the axles and driveshaft, unbolting the . SHARE THIS ARTICLE: Please feel free to share this post on Facebook / Twitter / Google+ or any automotive Forums or blogs you read. Johns Industries Nodular Iron Assembly N1905JI $1728.00 With Open (New Gear) With Full Light Weight Spool $1409 With Trac-loc $1770 With Truetrac $1974 This third member comes with: A new, U.S.A. made John's nodular iron 9 inch case Case one pound lighter than the original Ford case Rated for up to 750hp A new U.S.A made John's billet aluminum pinion support A new forged pinion yoke of your . There is a ton of aftermarket support for this axle (see Chapters 3 and 4 for more details). The BOM will identify the model number, the gear ratio, the type of differential, and all component parts. Use this information at your own risk. 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 complex fixturing and welding process, coupled with fuel economy concerns, is what eventually led to their production demise. 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. It has a square design with four rounded corners and ten bolts. 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. pattern in most cases differed from the car, and due to the bearing size For the Ford 9" rear end to be smaller and lighter than a Dana 60, the weight has to come from somewhere. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. The code, 4L11, tells us that it is a 4.11:1 ratio with a limited-slip or Traction-Lok differential. Have For instance, if both the engine and transmission deliver up to 100 ft./lbs. 8.75, 9.25, Ford 9 inch, and GM's 8.25 inch . wheel drives) right up until about 1982, these housings are by far the middle of case it is a good IRON type IF in the very center of this case This is a great upgrade component to use for high-power applications or if you are replacing your cartridge. axleshafts. This sensor is for the anti-lock brake system. 4. The Ford 9 inch rear end is one of the most popular axles in automotive history. This larger offset (hypoid distance) between ring-gear . Note the ring diameter cast into the housing above the pinion. 28 spline axles are tapered and cannot be shortened and re-splined. Axle Ratio : Axle Ratio : Diesel: 5.13: 4.10: 3.55: Gas: 4.10: 3.55 : Trans Ratio: . This format is also applicableto casting date codes. 66-71 Fairlanes, Torinos, Montegos, Comets, and other Ford intermediates with big blocks. for the 1971-1973 Mustangs - cars with 351 engines and up receiving the 9-inch type, 28 and 31 splines, Ranchero/Torino - heavy duty thick wall housing, 3.25 inch diameter axle 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. The the best. If the socket fits (as shown in our photo below) it is a Ford 8-inch housing. in the backside middle and stronger tubes. The engines flexplate is a critical part to transferring power to your drivetrain. The axle code in our example, H9, has a specific meaning. 4. It features the legendary Ford 9-inch ring and pinion strength, 5-on-5.5 lug pattern (same as older Jeep), a 65-inch width at the wheel mounting surfaces, large-bearing semi-floating axles, and many can be found with hefty 31-spline axleshafts. as the Mustang. Spring perches must be cut and re-welded in order For example, Ford says the 2018 F-350 Super Duty 4x2 regular cab pickup equipped with the 6.2-liter . 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. 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. Later T & C FORD TOP LOADER 4 SPEED WIDE RATIO 2ND GEAR 31 TOOTH showing . 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. These variations include different-size drum brakes, disc brakes, and wheel hub arrangements. 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. 52" the axle from around the 1957 model year right up until the early 1980s This pinion has the tapered bearings and collapsible spacer in place. around 64-65 I believe.They are most often found behind the later 428CJ housings. It was introduced in 1957 model year cars and ended production in 1986, having been phased out in favor of the Ford 8.8 inch axle.However, aftermarket companies still produce the 9-inch design. You bring the gumption. GM X-Body Nova Complete Rear End Packages. For the most part, series numbers can be determined by your gear ratio, with 2.73 and lower rearend gear ratios falling in the 2-Series, 3.08 to 3.90 rearend gear ratios falling in the 3-Series, and 4.10 and higher rearend gear ratios falling in the 4-Series. 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: There is a gear ratio stamped on the tag. This larger offset (hypoid distance) between ring-gear and pinion-gear centerlines is the key reason the Ford is inherently strongerbut also why its slightly less efficient. Many people are not aware that Ford made a smaller banjo axle and confuse the 8-inch for a 9-inch. 1960-1967 two dimples, flat center band, oil level hole in the back cover. 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 54" There is a huge aftermarket support for this axle design. in the backside middle and stronger tubes. Now that you have identified the axle code, let us know the axle ratio. the few cars and early Broncos (and some early trucks) which received 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. This is because the supply is limited to Dec 1, 2011. Generally, aftermarket shafts have to be purchased Some of the heavier cars like the Galaxies also received the and Fairlane axle housings are often grouped together because they are the 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.
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