Keep in 31-spline carriers and axle shafts. used the 9-inch rear, regardless of engine size. You can then enter any term, such as Axle Ratio,to search the guide. 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. (often referred to as a "POSI") came to be a popular option and This will ensure that the correct replacement parts are purchased or salvaged from a junkyard to be used in the vehicle. There are also unique domestic special-option tags, which dont follow the format. can easily tell this is a 9-inch from the hump in the rear and (2) PDF Differential ID Chart - Summit Racing Equipment I reference these axles based on the ring gear nominal outside diameter in inches. This complex fixturing and welding process, coupled with fuel economy concerns, is what eventually led to their production demise. The The primary purpose of this plate is to show you if your vehicle is equipped with a limited-slip to rear-end differential. if one wants to use a 31-spline truck carrier in a car. These have a C4AW-4025-B casting part number next to the adjuster nut. trucks varied more, early half ton trucks got the 28-spline axles and Content. Drag Racing 101 ~ Everything You Need to Know! are you wanting the listing for the ratio tags? dimples. Rhodes Race Cars Unwelded Fabricated Rear End Housing Ford 9 in. While the larger offset makes the ring and pinion gears stronger, the additional sliding of the gear teeth creates more heat in the axle. Later Notice that the date code is C9UA with the ring gear size of 8.7. Interestingly, the Ford axle uses the exact same size of tapered roller bearings as the GM 12-bolt. for 1965-1966 (the same width as 1964-1965 Falcons and 1962-1965 Fairlanes for the swap to be performed. Generally most cars received the small axle bearings and 28-spline axle There are a few exceptions that you will see in the Ford Axle code chart. duty.And believe it or not, they were also used in some FE equipped Ford You will also learn how to identify the codes in Ford vehicles. 70's. - Rod Stroke Ratio - Stroke Size Rear Gear Requirements - Rear End Gear Ratio Needed - Speed from RPM, Rear & Trans. This particular pinion cartridge is well reinforced and much stronger than the stock production cartridge. Ford 9 Inch Rear End Gear Ratios Chart1969 impala ss 427 4 speed. These used what is referred to as a Are reviews modified or monitored before being published? Proceed to match the code with its corresponding Axle Ratio column on the table to find the ratio. 4. You are looking for a nodular iron case, with its telltale N cast into the front or inside wall. H. 2.75 locking differential. 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. . * Coupon does not apply to Oval Size Matters T-Shirt. Measuring for your 9-inch axles requires a few basic measurements to be taken. the best. Most have the two driving holes for the manufacturing process while one has a more square looking drive end. This is not a nodular unit. The Ford Axle code will also help you identify your particular models engine capacity and the year/vehicle make. This was an 8.75- inch ring gear in a 9-inch housing. . popular early swap being the 1957-1959 Ford for the 1965/1966 Mustang. Repairing a twisted brake or throttle cable with a simple homemade tool in just minutes Easy and functional. You can find the axle code on the Safety Standard Certification label information. Axle length is not always identical from side to side, as many 9-inch applications use an offset center, so you must measure the housing carefully to be able to order the proper axles. 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. them. Gross Vehicle Weight ( GVW ) would Now you can see the C4AW-4025-B part number on the lower left unit, which verifies it as a nodular unit. . C-6, three-speed, automatic. Mustangs Gear Ratios - RPM from Speed, Rear & Trans. many half ton trucks continued to utilize the 9-inch (both 2 wheel & 4 axleshafts. housings. The answer lies in several of the Ford 9-inchs design aspects, starting with the Ford 9 inch gears. Exceptions to this were the ultra Hi performance Boss 302s, Ford 9 inch Third Members Assemblies - John's Industries 54" If measuring the drum-to-drum distance, add .200-inch to these values. Ford Drive Ratios - Gearvendors The Ford 9-inch is the most desirable drag racing rear end because it has a removable carrier, which allows quick rear end changes. "N Case" was no longer needed for passenger car/truck There are even different pinion cartridges that have been available from the various production years and models for this axle. The Final Drive Ratio shows you how many times the engine turns for one complete turn of the tires. There is a machined roller bearing race on the pinion head portion that points at the differential opposite thetapered bearing races. Fords 9 inch rear axle was produced from 1957 through 1986 and was installed in nearly every Ford passenger car and truck at one time or another. HOW TO CHOOSE YOUR GEAR RATIO FOR A 9-INCH REAREND - YouTube The 8-inch also was only available with 28-tooth axle shafts. and this style of center carrier housing is best suited for drag cars or same width, but the distance between spring perches is different between other Ford Ranger enthusiasts. This is because the supply is limited to 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. The repair process requires the axle to be disassembled and thoroughly cleaned. 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Many companies, such as Currie Enterprises, Mark Williams Enterprises, Moser Engineering,and Strange Engineering, reproduce this design today. can get your submission posted and acknowledged When measuring from the top left bolt to the bottom left bolt, the 8.8" rear end will measure 11" from bolt to bolt. It is an 8 inch rear axel so many parts interchange with many other years Fords and Mercury's using an 8 inch axel. also received the larger axle bearings housings. Differentials take the power from the rear axle and transfer it to the rear wheels by way of special gears. Nine Inch Rear Axle. 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. Some of the heavier cars like the Galaxies also received the There is a gear ratio stamped on the tag. most abundant. The best gear ratio for a GM 10 bolt is 10,41 because it is the only ratio that allows your engine to turn 10,41 times per minute. The certification plate can be located on the lock face of the left door edge. Differential Identification | West Coast Differentials The popular early swap being the 1957-1959 Ford for the 1965/1966 Mustang. This bearing and the casting structure surrounding it need to be carefully inspected as this is a common area for cracks. How can one verify "Posi" without taking the differential apart? by the size of the nuts and thread used to retain the brake backing plates it was very complete. As part of my research, I went to renowned Currie Enterprises and gathered one of just about every different 9-inch axle variant. 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. Ford Rear Axle Assembly Identification - Page 01 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. The cast-iron third member is installed from the front of the housing. What Is Car Battery Voltage And Why Is It Important? 77-81 Lincoln Versailles. The rear-end housing has a vast amount of ford 9-inch gear ratios available. Any sufficiently advanced technology is indistinguishable from magic . Select the Towing Guide for your vehicle's model year. Gears / Diffs / Install Kits Listed By Vehicle, Standard Gears & Pro Gears Dana / Ford / GM / Mopar, Strange T-Shirts. the Broncos from 1966 to 1977, they stayed with the 28-spline units. narrowed rear ends due to the added strength in the middle. Watch the video for all the details and you'll wonder why your shop hasn't had a set sooner! mind as mentioned, the Fairlane spring perch distances were not the same For instance, if both the engine and transmission deliver up to 100 ft./lbs. diameter bolt circle, 1967-1973 Torinos, Rancheros, Fairlanes 59.25 inches or The 8.5- and 8.8-inch gears have even found themselves in the independent-carrier-style axles. widths I keep in mind for Mustangs are the following: Talk to the experts. GM Chevy S10 82-04 Complete 9" Rear End Package. Ford 8.8 axle - Wikipedia
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