Ford 9-inch can be found under 1974-1986 F-150s and 1978-1986 Broncos. 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. These were used sporadically until about 1969. Careful aftermarket shops and their stringent attention to repairing these housings are able to correct many of these issues. 1/2 ton 4X4 pickups! pattern in most cases differed from the car, and due to the bearing size Customers are invited to participate in a survey administered by MaritzCX, an independent, third-party supplier. widths I keep in mind for Mustangs are the following: 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. Tip: To search theTowing Guide, press CTRL + Fto open a search box in your browser. "Pro" gears are designed specifically for drag racing. The Ford 9-inch can be found under 1974-1986 F-150s and 1978-1986 Broncos. many half ton trucks continued to utilize the 9-inch (both 2 wheel & 4 for the 1971-1973 Mustangs - cars with 351 engines and up receiving the 9-inch Torsion Axle Vs. It is still used in NASCAR racing as well. Learn more. You are correct sir, these are the standard ratios for 65-66. Filed Under: Ford Tech Tips, Rebuild Ford Differentials, The Best Ford Tech Articles, 2023 DiY Ford. The exception is the 2002-2003 Ford Explorer Sport which still used the solid rear 8.8-Inch axle. It has more ground clearance than a Dana 60. An assortment of Ford 9-inch axle stampings is welded together to create the housing. All of the 8-inch case nuts can be accessed with a socket. The most replaced, and that is why it remained in use for so long. 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. You can then enter any term, such as Axle Ratio,to search the guide. Walk any automotive event and theres a darn good chance that any hot rod or muscle car you peek under is going to be sitting on a Ford 9-inch housing. Standard Ford 9 inch gear sets are primarily used in street applications. 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. A metal axle tag is typically located on the driver-side front of the third member. Pairing your vehicle with the wrong axle components will not only damage your vehicle but cost you a lot down the line. How can one verify "Posi" without taking the differential apart? 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 . 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. 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. Performance Front & Rearends GM Vehicles 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. smooth backside. Here is an example of such a unit. Also notice the part number and metal axle tag. At this width, many were used in street rod applications without modifi cation. trucks varied more, early half ton trucks got the 28-spline axles and 8. weakest and had abrupt ending but welded carrier centers to tubes and a The 8.8" rear end is flat on the top and the bottom as well as the left and right. The certification plate can be located on the lock face of the left door edge. in cars and trucks. The WFE-V2 helps us fi nd the decade of the 1970s. Chevy differentials: how to rebuild the 10- and 12 . Any Ford 9" carrier will fit, as long as it has a fill plug on the side. the Broncos from 1966 to 1977, they stayed with the 28-spline units. some 302 4V cars with optional gear ratios). If there is an "L" in between, you should have a locking or limited slip differential. Finally, using bearing retainers that secure the axle at the flange, versus a C-clip style that secure the axles at the differential, means in the case of axle failure the axle flange and wheel will stay with the housing and not leave the vehicle, potentially causing brake failure and lack of control on the racing surface. Here is the step by step guide: The Safety Standard Certification/ Safety Compliance Certification label is located on the door pillar of the left driver seat of your truck. Many people prefer to just call it the Ford 9-inch-style wheel end. For the Ford 9" rear end to be smaller and lighter than a Dana 60, the weight has to come from somewhere. A 2-inch version is not shown. But if youre looking for an original, they can be spotted quite readily even without an axle identifycation tag. Gross Vehicle Weight ( GVW ) would I have spent countless hours over the years collecting, reading, and studying old shop manuals, supplier reference documents, SAE papers, and even vehicle manufacturer reports and notes. You Both axles share a common design and are often referred to as banjo style or third-member style. 56" 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. 1973-1979 Ford Truck Rear Axle Codes. See all 20 photos. T & C FORD TOP LOADER 4 SPEED WIDE RATIO 2ND GEAR 31 TOOTH showing . This strengthens the whole rear end assembly. You can install a true 9-inch gear in these housings as well. There are a few exceptions that you will see in the Ford Axle code chart. Ford 9.5 PRO GEAR* *PRO GEAR RATIO PART NO. It's uncertain if this E The tags were replaced with adhesive labels that are placed around the axle tube near the brake and wheel end. applications due to the demise of most performance engine options in the With their high-volume production, the two biggest quality problems were leaks from poor welds and poor alignment of the housings. Ford 9 inch axles different from other high-performance rear endsare how the ring and pinion gear is accessed. The 9-inch third-member bottom fasteners, on the left, can only be accessed with a wrench. Dana 50 - Ford Front Dana 60 - Standard or Reverse Rotation Ring Gear Diameter: 9" / 229mm Ring Gear Diameter: 9.75" / 248mm Pinion Diameter / Spline: 1.375" / 26 Pinion Diameter / Spline: 1.625" / 29 Ring Gear Bolts: (10) 7/16"x20 RH Ring Gear Bolts: (12) 1/2"x18 RH Cover Bolts: 10 Cover Bolts: 10 Carrier Breaks: None Carrier Breaks: 4.10 / 4.56 (often referred to as a "POSI") came to be a popular option and * Pro Gears are specifically designed for drag race only. Here is an example of 11 x 2-inch drums brakes with the small bearing size on the left and the large Torino style on the right. There is a huge aftermarket support for this axle design. There is a ton of aftermarket support for this axle (see Chapters 3 and 4 for more details). The 10,41 gear ratio is also great for off-road activities . The 7.5" rear end is also flat on top and bottom. The straddle-mounted pinion has a roller bearing in the gear case, which provides additional support for the pinion under heavy loads. The fourth version did not have the N in the casting on the outside but still retained the rib structure. of torque to the pinion gear and the gear ratio of the ring-and-pinion is say 4.12:1, the output torque is 412 ft./lbs. Ring Gear/Pinion Gear Teeth to Gear Ratio. However, the critical aspects of the rear axle are the axle flanges and axle lengths. There may be other labels attached to that pillar so pay attention to one that looks similar to the one below. The axle tag typically has two lines of numbers and letters stamped on it. Proceed to match the code with its corresponding Axle Ratio column on the table to find the ratio. Original ratios are 2.47, 2.50, 2.75 or 3.0 with the 2.50 being the most common. 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. In the 1980s and 1990s, the Lincoln Versailles brakes and complete axles were highly sought after because it was the only way to get a 9-inch axle with discs in a 58-inchwide axle package. The BOM will identify the model number, the gear ratio, the type of differential, and all component parts. It was also used in the 1983-1996 full-size Bronco, and E150 Econoline . Enter the required Overall Width, Pinion Offset (location), Brake Space and Drum/Rotor thickness to find axle length and housing width. Required fields are marked *if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'gmundcars_com-large-billboard-2','ezslot_9',168,'0','0'])};__ez_fad_position('div-gpt-ad-gmundcars_com-large-billboard-2-0');report this ad. This pinion has the tapered bearings and collapsible spacer in place. If you know your axle tag number, simply go to the second table. How To Identify 9 Inch Ford Housings Chart via Speedway Motors. Where A=the first number (static reduction), Bi=Gear diameter, Bf=Ring Gear diameter, Cf= (Crown Wheel dia.) small bearing housing can be differentiated from a large bearing housing 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/. 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. But 10.168 / 4.70 (to determine the equivalent rear-gear ratio) equals 2.16:1, which is not realistic. Hot rodders and drag racers use 9 Ford rear-ends and their aftermarket descendants in just about everything not just Ford cars and trucks. 76-77 large bearing. housings. When it comes down to actual shafts as well, since the truck lug "N Case" was no longer needed for passenger car/truck 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 center section is the differential assembly. nickel content and better casting than the earlier single ribbed cases it This is a typical axle tag that has been removed from the third member. For the Ford 9" rear end to be smaller and lighter than a Dana 60, the weight has to come from somewhere. Our editors pick the products & services we write about. For a Ford 9 inch rear end, swapping gears is fairly easy as it has a removable third member. And you can find the axle code charts on the internet from your manufacturer. Axle The Paint gmc dupont charts reference chart 1956 1959. A Tip: To search the Towing Guide, press CTRL + F to open a search box in your . "N Well show you what to look for in this buyers guide. housings also evolved over the years: The If the case has two verticle RIBS ,from top to of course most desirable is the N case, first used on the 427 Galaxies for 1965-1966 (the same width as 1964-1965 Falcons and 1962-1965 Fairlanes Dec 1, 2011. 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. duty.And believe it or not, they were also used in some FE equipped Ford This case looked like a nodular unit from the front regarding rib structure but did not have the N on it. 1967-1973 Mustang axles can be identified by wheel flange: Oval hole = 28 splines; Two large holes and counter-sunk center = 31 splines. station wagons-cars with 351 and up engines received 9-inch units - as did The Ford 8.8-inch is very similar to the General Motors (GM) 878-inch, 12-bolt axle.
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