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31-spline axles and carriers for most trucks. medianet_crid = "364974658"; Ford 8 Ford 9: CLICK FOR MORE INFO. Both axles share a common design and are often referred to as banjo style or third-member style. Because of the long production history of this axle, many variants are available. nickel content and better casting than the earlier single ribbed cases it Tip: To search the Towing Guide, press CTRL + F to open a search box in your . This is a major advantage compared to other rear axle systems because disassembly is faster and more convenient. Here is a quick visual summary: The 1957 housings do not have dimples on them and have an oil drain plug. The heat treated aluminum alloy well suited to absorb high impact shock loads. Ford trucks and cars from 1968 onwards are equipped with the Ford Axle codes, which are clearly indicated on the certification plate. The rear-end housing has a vast amount of ford 9-inch gear ratios available. If your vehicle has a Limited Slip Differential, it will be noted as Limited Slip. 52" When measuring from the top left bolt to the bottom left bolt, the 8.8" rear end will measure 11" from bolt to bolt. is by far the most abundant case being used in both full size Ford cars There are even different pinion cartridges that have been available from the various production years and models for this axle. First, the pinion shaft housing is removed from the front of the housing by removing five bolts. 9-Inch Standard Ring And Pinion Gear Sets (3.00 to 6.50 Ratios) $240.00. around 64-65 I believe.They are most often found behind the later 428CJ Ford rear ends, or differentials, were manufactured by either the Dana Corporation or Ford. Watch the video for all the details and you'll wonder why your shop hasn't had a set sooner! 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 There is a huge aftermarket support for this axle design. Warranty Period: 1 Year or 50,000 Miles: Part #: MGK-300 : Ring Gear Diameter: 8.5 Front (Inch) 9 Rear (Inch) Ring Gear Material: 8620 Steel: Differential . The axle model codes are interchangeable, typically the suffixes are different for a revision change but the axle is still interchangeable with one having the previous suffix. Like the H in our case shows a car with a limited-slip differential. There is a very fundamental difference between Fords 8.8- and 9-inch axles. 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 Call us at (864) 843-9275. * Pro Gears are specifically designed for drag race only. 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 You can install a true 9-inch gear in these housings as well. Are reviews modified or monitored before being published? I put together a whole collection of housings and third members. Because We'll also walk you through choosing the correct parts in order to make this installation a breeze! * Pro Gears are specifically designed for drag race only. Here is a picture of the milling machine cutting new spline teeth after the axle has been cut to length. Once you have identified the label, locate the word AXLE under the bar code section. Anyone know? Ford 9 inch Gears. The Ford Mustang and Thunderbird used this style for a few model years. If the case has two verticle RIBS ,from top to Details: Motive Gear . Produced from 1957 to 1987 by the Ford Motor Company, it was used in full size . larger wheel bearing housings. Generally, aftermarket shafts have to be purchased the early housings are ok for the average street performance cars. With their high-volume production, the two biggest quality problems were leaks from poor welds and poor alignment of the housings. This is an example of the brakes that fi t the small wheel end bearing for a 10 x 2-inch-wide drum brake on the left and a 10 x 1-inch on the right. The Lincoln LS and Jaguar S-type were equipped with an 8-inch, castaluminum, independent- style carrier. CASE" "N Case" was no longer needed for passenger car/truck Info To Share? Learn how to hook up a 1-wire alternator on your vehicle. Your email address will not be published. medianet_height = "250"; 31-spline car shafts. in cars and trucks. But to be correct, it is a 3/4 fl oat. dimples. Proceed to match the code with its corresponding Axle Ratio column on the table to find the ratio. features the legendary Ford 9-inch ring and pinion strength, 5-on-5.5 lug VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Boss 429s, 427s, 428 CJ/SCJ and the 429 cars which received the But 10.168 / 4.70 (to determine the equivalent rear-gear ratio) equals 2.16:1, which is not realistic. This custom axle tag was obviously hand cut as evidenced by the sharp tin-snipped-looking ends and includes DSO, for Dealer Special Order. 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 . 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. 67-73 medium and big block Mustangs and Cougars. The later This complex fixturing and welding process, coupled with fuel economy concerns, is what eventually led to their production demise. The middle number is the ring gear diameter in inches, typically an 8 or 9. Start by opening the left drivers front door. Using the Ford Axle code chart, you will get to negate all these issues with ease. Pairing your vehicle with the wrong axle components will not only damage your vehicle but cost you a lot down the line. First locate your current gear ratio and tire diameter and then find your approximate RPM at 65 MPH, then reference your new tire diameter with your desired RPM to find the new gear ratio needed. These shafts had a longer brake spacing offset and a unique brake drum register diameter of 2.870 inches, which was uncommon for the time. The tags were replaced with adhesive labels that are placed around the axle tube near the brake and wheel end. People tend to be drawn to it like a magnet. found in the trucks up to around 1982. 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. 56" 31-spline carriers and "Traction Loc" style posi unit. The smaller 8-inch third member is on the right. All of the 8-inch case nuts can be accessed with a socket. mind as mentioned, the Fairlane spring perch distances were not the same Click on the 'Submit' button to find out how you the best. This is by far the most common axle used by restorers, hot rodders, customizers, and racers. 1-wire alternators are perfect for engine swaps or just keeping things simple for your project. Roadkill Customs has evolved from local hot rod shop to online how-to magazine for budget-minded do-it-yourself hot rod builders and enthusiasts. housings also evolved over the years: The if one wants to use a 31-spline truck carrier in a car. duty.And believe it or not, they were also used in some FE equipped Ford differences, 28-spline car axle shafts are much more abundant than the The date code on this axle tag is 7AC, and it corresponds to the 7th year, 1st month (January), and 3rd day. It is underneath one of the nuts that holds the third member in place. What Is Car Battery Voltage And Why Is It Important? CLICK HERE to see a complete listing of front axle codes). Paint gmc dupont charts reference chart 1956 1959. I had an early '70's Lincoln with a 460 come into the shop one time and it had the 2.33:1 ratio in a 9 inch. 1/2 ton 4X4 pickups! The other identification information, 9, as observed from the chart, indicates a 3.55 gear ratio of the Ford F-150. The repair process requires the axle to be disassembled and thoroughly cleaned. If you know your axle tag number, simply go to the second table. Some axle shafts can be shortened and a new spline machined in place. 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. *** SELECT GEAR RATIO FOR PRICE *** Categories. How To Recognize 9-Inch Housing The 7.5 should be plenty adequate for the application you describe, but an 8.8 is best. The complete guide to master any grease gun, Battery vs. Starter vs. Alternator: How to jumpstart even the most stubborn of car. The unit on the top left seems to be nodular iron but requires a little more investigation to verify. Careful aftermarket shops and their stringent attention to repairing these housings are able to correct many of these issues. It has more ground clearance than a Dana 60. Ford Axle codes help identify the vehicles positraction as well as an axle to gear ratio. . The 1967-1973 Mustang/Cougar - light duty, thinnest housing material, small axle This additional bearing and, more importantly, the necessary casting support structure is what drives the larger hypoid offset. Axles were similar to the Ford 9-inch 28-spline units. 70's. Ranger Station, Submit The LS swap is no doubt still going strong, but if youre planning to run an automatic behind your 4.8, 5.3, or 6.0L LS-powered ride, youll need to pay attention to a few items we discuss in this buyers guide. 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. The Over several generations of small block Chevy (and big block Chevy) engines there have been several changes that dictate what flexplate works with them. is by far the most abundant case being used in both full size Ford cars Theres an easy way to tell an 8-inch apart from a 9-inch. WJ Handy Dad recommends safe practices when working on vehicles/homes and or with tools seen or implied in this video. The 8-inch also was only available with 28-tooth axle shafts. station wagons-cars with 351 and up engines received 9-inch units - as did 1/2 ton 4X4 pickups! Power is transmitted from the transmission to rear end 1:1 in high gear. This format is also applicableto casting date codes. Since the "Limited slip" or Locking rear end Also, since this axle is used in so many circle-track race cars, the 9-inch enjoys an unparalleled availability of different gear ratios in the aftermarket. Here is a down-and-dirty way of picking the best gearing for a particular car from three choices: 3.07:1 final drive with a wide-ratio transmission, a 3.07:1 final drive with a close-ratio transmission, and a 3.36:1 final drive with a close-ratio transmission. trucks varied more, early half ton trucks got the 28-spline axles and The N cases typically came with the larger Daytona-style pinion support bearing, and 31-spline axle shafts. The Ford 8.8-inch axle has the same ring gear mounting distance (see Chapter 7) for all ratios, just like the 9-inch. carriers, while sometime in the early 70's the switch was made to mostly found in the trucks up to around 1982. and trucks throughout the 1970s. It's uncertain if this E The most 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. At this width, many were used in street rod applications without modifi cation. Axle Ratio = (RPM X Tire Size)/ (Speed (MPH) X 336) Example 4.88 = (2881 X 37)/ (65 X 336) by the size of the nuts and thread used to retain the brake backing plates housings. How to Narrow a 9 Inch Ford Rear End. 1957 . if so is this what you are looking for. The You can do this by multiplying by the gear ratio. narrowed rear ends due to the added strength in the middle. pattern in most cases differed from the car, and due to the bearing size However, the critical aspects of the rear axle are the axle flanges and axle lengths. With the pinion gear and differential in place, rear-end marking compound in place, and with the bearings only "snug" (just tight enough to eliminate any "play"), check the pinion depth by way of the contact pattern that can be found by the rotation of the pinion against the ring gear. Ford improved tooth contact of the Ford 9 inch gears by locating its pinion gear lower on the ring gear. common carrier housing found is the C7AW-E. 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. Gear Ratios - RPM from Speed, Rear & Trans. 1972 and earlier, 31 spline axles have the ability to be shortened. 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. Ford used Many companies, such as Currie Enterprises, Mark Williams Enterprises, Moser Engineering,and Strange Engineering, reproduce this design today. 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! 8. The typical 3 inch-diameter tubes can be a bit flimsy in higher-power applications. Axle Size/Strength Chart; Explained Videos; Tech Articles; 9-Inch Ford. While we do offer cut-to-fit axles, you still need to ensure you have the proper measurements to be within the cut-to-fit area of the axle's splines. same width, but the distance between spring perches is different between The aftermarket Daytona-style pinion cartridge accommodates the larger and stronger pinion head bearing. The 10,41 gear ratio is also great for off-road activities . The case Because of their strength, youll see these 9 inch rear ends used in just about every make of car, truck, and customs. The ring and pinion are then accessed, also from the front, by removing another 10 bolts. Gross Vehicle Weight ( GVW ) would it was very complete. 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. The 7.5" rear end is also flat on top and bottom. A metal axle tag is typically located on the driver-side front of the third member. How can one verify "Posi" without taking the differential apart? for the swap to be performed. WJ Handy Dad assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. When you buy through our links, we may get a commission. Ford Differential Axle Codes. shafts. The large bearing size was available with fi ve different brake drum widths. Richmond Tech Support. 28 spline axles are tapered and cannot be shortened and re-splined. used the 9-inch rear, regardless of engine size. Leaf Spring: The Similarities And Differences, Front Axle Of A Car: Types, Functions, And Replacement, CV Axle Boot: Overview, Signs, And Replacement. more plentiful starting in the early 1970's, many of the units found today actual car posi units, which were primarily 28-spline carriers, can be housings also evolved over the years: in the backside middle and stronger tubes. of course most desirable is the N case, first used on the 427 Galaxies shafts. 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 Here is an example of such a unit. . Most of the later trucks 3.00, 3.25, and 3.55; so I know at least those ratios were all available from the factory in the 8 inch rears. This allows quick gear ratio changes to accommodate different tracks or updates to your vehicles horsepower and torque ratings. some 302 4V cars with optional gear ratios). 289 Hipo cars.The N cases went with 31 spline centers and are for rugged The Fora platform includes forum software by XenForo. The fourth version did not have the N in the casting on the outside but still retained the rib structure. GM B-Body Complete 9" Rear End Packages. also received the larger axle bearings housings. Call 800.979.0122, 7am-10pm, everyday. 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. 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. and this style of center carrier housing is best suited for drag cars or There are three versions with external Ns cast in; note the more curved style on the top right. The narrowest production 9-inch axle is 56.375 inches. for the 1971-1973 Mustangs - cars with 351 engines and up receiving the 9-inch Ford intermediates with big blocks. 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There are 8.5-inch gears installed in these housings for lowerpower vehicle applications. For the Ford 9" rear end to be smaller and lighter than a Dana 60, the weight has to come from somewhere. carriers both, as well as with the spline count on the axle shafts. The Final Drive Ratio shows you how many times the engine turns for one complete turn of the tires. Ford personnel and/or dealership personnel cannot modify or remove reviews. 66-75 large bearing, 3. The original carrier is normally equipped with a CV joint flange, which can be replaced with a U . Some of the heavier cars like the Galaxies also received the of course most desirable is the N case, first used on the 427 Galaxies Note the weld on the top of the axle center section along with the oval-shaped dimples on the rear section. Before you embark on the rebuild and start scouring local scrap yards and online websites, it will be helpful to understand what to look for and what to avoid in these axles. Many aftermarket companies produce 9 Ford equivalent rear axles for the drag racing and hot rod industry. 6. (It was later used for pick-ups and Broncos.) Snap On vs Daytona, Pittsburgh, ESCO, Husky, More. Notice that the date code is C9UA with the ring gear size of 8.7. There is a ton of aftermarket support for this axle (see Chapters 3 and 4 for more details). Nine Inch Rear Axle. Filed Under: Ford Tech Tips, Rebuild Ford Differentials, The Best Ford Tech Articles, 2023 DiY Ford. The Ford 9-inch is the most desirable drag racing rear end because it has a removable carrier, which allows quick rear end changes. The format has changed over the years but mostly follow this sequence:. Ratings and reviews are provided by customers who have either purchased a vehicle or visited a dealership for service. 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. But if youre looking for an original, they can be spotted quite readily even without an axle identifycation tag. if one wants to use a 31-spline truck carrier in a car. 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. Note: Rear axle ratios are available for 2008 and newer models. for 1965-1966 (the same width as 1964-1965 Falcons and 1962-1965 Fairlanes Interestingly, the Ford axle uses the exact same size of tapered roller bearings as the GM 12-bolt. The 8-inch was introduced in 1962 and is found in many lower performance Fairlanes, Mustangs, Falcons, Comets, Cougars, and Pintos, just to name a few of the applications. Besides the styling of the Ford Edsel, even the axle shafts were very unusual. If the socket fits (as shown in our photo below) it is a Ford 8-inch housing. 31-spline carriers and axle shafts. Ford Axle code identification, Read more: Front Axle Of A Car: Types, Functions, And Replacement.