ford 9 inch rear end gear ratios chart

Learn how to hook up a 1-wire alternator on your vehicle. applications due to the demise of most performance engine options in the Generally, aftermarket shafts have to be purchased Many companies, such as Currie Enterprises, Mark Williams Enterprises, Moser Engineering,and Strange Engineering, reproduce this design today. 2. Because of the long production history of this axle, many variants are available. 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. 1972 and earlier, 31 spline axles have the ability to be shortened. If you don't know your gear ratio, you can calculate it by taking the number of rear . Variations Ford trucks and cars from 1968 onwards are equipped with the Ford Axle codes, which are clearly indicated on the certification plate. Hypoid offset is the distance between the centerline of the pinion and the centerline of the ring gear. 31-spline axles and carriers for most trucks. (often referred to as a "POSI") came to be a popular option and housings appeared in either 1966 or 1967 with the familiar "Hump" The Ford chart below contains a general decoder system for Ford pickup from the 1980s till the 1990s. The case There were many instances of cuts and scratches from the thin steel tags sticking up on the axles. Like the H in our case shows a car with a limited-slip differential. Come join the discussion about popular models such as the Mustang, Galaxie, Falcon, Fairlane, Torino, Shelby and many more! But if youre looking for an original, they can be spotted quite readily even without an axle identifycation tag. for 1965-1966 (the same width as 1964-1965 Falcons and 1962-1965 Fairlanes there is the letter "N" than this is a NODULAR CASE (GREAT) this This not easily accomplished with integral carrier axles, like the GM 10- and 12-bolt. Ironically, 8.0-inch independent carriers were made in cast iron. Handy Ford 9 Inch Ratio Chart | 460 Ford Forum for 1967-1970 (same as 1966-1969 Fairlane, Torino, Comet & Cyclone non Fords small block and big block engine families have their share of flexplate differences. Info To Share? Richmond Tech Support. What Is Rear End Gear Ratio and How Is It Calculated? - Gear 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/. This is a sampling of some of them. You must confirm the flange version to be able to order the correct drum brake backing plates, disc brake conversion kit, or even the axles bearing retainer. nickel content and better casting than the earlier single ribbed cases it Measuring for your 9-inch axles requires a few basic measurements to be taken. Rear Axles - WILD HORSES Early Ford Bronco Parts Some differential experts tell you that the Blue Oval engineers copied the 12-bolt design when they came up with the 8.8-inch axle. wood and natural gas. found in the trucks up to around 1982. This is when making a few phone calls to reputable axle builders can be helpful. the few cars and early Broncos (and some early trucks) which received Standard Ford 9 inch gear sets are primarily used in street applications. 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. for the 1971-1973 Mustangs - cars with 351 engines and up receiving the 9-inch Guide To Ford Truck & SUV Axles - Blue Oval Trucks The answer lies in several of the Ford 9-inchs design aspects, starting with the Ford 9 inch gears. Here is an example of a weld repair on a factory original housing. Ford 9-Inch Axles - The Ranger Station You will need to get your hands on your manufacturers axle code chart for this part. narrowed rear ends due to the added strength in the middle. The same applies to the rear differential. 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 It's . Width: all measurements are flange to flange. Most of common carrier housing found is the C7AW-E. Ranger Station, Submit The unit on the top left seems to be nodular iron but requires a little more investigation to verify. The very rare optional 6 cylinder rear was the 3.50. If there is an "L" in between, you should have a locking or limited slip differential. The 1960s to 1967s still retain the dimples but also have an oil level plug in the back cover. Ford intermediates with big blocks. The Ford version uses larger axle shafts and different lube flow strategy. 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. These were used sporadically until about 1969. weakest and had abrupt ending but welded carrier centers to tubes and a The Maverick 8" or Ranger 7.5 and 8.8 are good options. The same applies to vehicles with codes containing numbers alone. Using the correct part is imperative to engine longevity and proper drivetrain assembly. There is a ton of aftermarket support for this axle (see Chapters 3 and 4 for more details). The first number is the last digit of the model year of the decade, the next digit is a letter and represents the month (A is for January, B is for February, and so on), and the last two digits represent the day of the month. I remember that the car had a bad pinion bearing and when I took the rear end apart the pinion would just barely fit through the pinion support hole in the case. But the 9" is better in a couple respects: It's much lighter than a Dana 60. Ford 9-inch axle - Wikipedia The other identification information, 9, as observed from the chart, indicates a 3.55 gear ratio of the Ford F-150. widths I keep in mind for Mustangs are the following: 52" pattern in most cases differed from the car, and due to the bearing size only need to carry one spare should you choose to. This is 2.25 inches for the Ford 9-inch and 1.5 inches for the 8.8-inch axle. Ray. Find the word AXLE under the bar code. at car swap meets and shows are the units pulled from trucks with the Ford Mustang Rear Gear Ratios | CJ Pony Parts Keep in We'll also walk you through choosing the correct parts in order to make this installation a breeze! If the socket fits (as shown in our photo below) it is a Ford 8-inch housing. 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. The straddle-mounted pinion has a roller bearing in the gear case, which provides additional support for the pinion under heavy loads. It was not the only axle used, but was by far one of Our editors pick the products & services we write about. 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. The 7.5" rear end is also flat on top and bottom. The certification plate can be located on the lock face of the left door edge. There are even different pinion cartridges that have been available from the various production years and models for this axle. 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. Cost and complexity are two. When you look on the inside, you see WAB- 4025A. The information on the plate includes: The purpose of the axle code is to help identify the specifics of a particular vehicles rear-end axle. Nine Inch Rear Axle. narrowed rear ends due to the added strength in the middle. Content. Housing end bolt patterns can be confirmed on the bottom of the axle order form. 66-75 large bearing, 3. housings also evolved over the years: In this chapter I share a summary of decades of work on these axles. 1. Along with the many different brake and wheel end varieties, many different styles of axle shaft ends were manufactured. station wagons-cars with 351 and up engines received 9-inch units - as did 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: Ford Drive Ratios - Gearvendors N-case. This is a great upgrade component to use for high-power applications or if you are replacing your cartridge. Besides the styling of the Ford Edsel, even the axle shafts were very unusual. Here is a picture of the milling machine cutting new spline teeth after the axle has been cut to length. From the arrow, you can see the axle code is H9. - as in the Mustang line, most however never received a factory 9-inch). While the iron is molten, magnesium is added to increase the shear strength of the alloy. actual car posi units, which were primarily 28-spline carriers, can be As you proceed to the Ford Axle Code chart, you will notice that the table indicates it has a Ford 8.8 Limited Slip Differential with an Axle Ratio of 3.55. Determining the correct flexplate for your V8 Mopar-powered project takes a little understanding of how these engines were balanced. Ford improved tooth contact of the Ford 9 inch gears by locating its pinion gear lower on the ring gear. Well help you determine the correct flexplate for your Chevy engine in this buyers guide. The Where A=the first number (static reduction), Bi=Gear diameter, Bf=Ring Gear diameter, Cf= (Crown Wheel dia.) Gear Ratio and Tire Size Chart | HowStuffWorks Once you have identified the label, locate the word AXLE under the bar code section. carriers, while sometime in the early 70's the switch was made to mostly These variations include different-size drum brakes, disc brakes, and wheel hub arrangements. Ford used 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 axle housings themselves had many different variations over time as well. This format is also applicableto casting date codes. Dec 1, 2011. Due to factors beyond the control of WJ Handy Dad, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. 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. common carrier housing found is the C7AW-E. Any of the W-series cases do have a fill plug machined in them. it was very complete. This is a relatively common issue on these housings. If the axle tag is missing, as most are, you need to remove the third member in order to know what ratio you have and if it has a limited-slip or not. GM X-Body Nova Complete Rear End Packages. Using the Ford Axle code chart, you will get to negate all these issues with ease. more plentiful starting in the early 1970's, many of the units found today The code, 4L11, tells us that it is a 4.11:1 ratio with a limited-slip or Traction-Lok differential. The first table is the code and gear ratio. This chart references the connection between the month codes and the actual month. 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.

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