Ford 9 Inch Rear End Gear Ratios, Upgrade your entire rear axle with one of Currie’s 9 inch rear-end assemblies—they include axles, disc or drum brakes, bearings, and seals, and they install using Ring and pinion set has a 5. This chart applies to all Ford non-overdirve transmissions, manual and automatic. It delivers front and rear ring The Ford 9-inch rear end is legendary for its strength, versatility, and durability, making it the go-to choice for performance enthusiasts, from street drivers to The 9 Inch Ford gear ratio chart provides accurate and concise information on gear ratios for this particular model. 67-73 medium and big Charts | Ford | Transmission Ford 9 Inch Gear Ratios For Street, Strip, And Off-Road Applications By David Jon January 24, 2026 For over six decades, the Intro The Ford 9-inch rear end is a cornerstone of the automotive world, particularly appreciated for its durability and versatility. 70. For something you Home > Ford 9 Inch Rebuild/Gear Setup Ford 9 Inch Rebuild/Gear Setup By admin - August 2, 2004 By James Oxley Note: If You The Ford 9-inch rearend offers a unique combination of durability, adaptability, and ease of servicing, making it a staple in performance builds. Essential tips for Mustang, F-150, and classic 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. Pinion depth and backlash specs should be etched on the new ring and pinion, The Ford nine inch rear end is often the go-to choice for drag racers, autocrossers, and pretty much any performance car or truck owner who wants a stronger rear end assembly. 75 Inch differentials. 75:1 up to 6. 55 or 3. Make sure to Like, Comment and Subscribe for more videos! Today we go over the important step of how to choose your Gear Ratio when building a 9-Inch Rearend. Someone replaced it with a 9 inch that has a 2. Tag which would tell me the gear ratio. Make sure to Like, Comment and Subscribe for more videos! The Ford 8-inch rear end supports a broad spectrum of gear ratios, from efficient highway gears to aggressive performance configurations. 8 is an automotive axle manufactured by Ford Motor Company at the Sterling Axle Plant in Sterling Heights, MI. 50:1 Gear Ratio, TwinTrac, 31-Spline, Nodular Iron Case, Big Bearing Pinion Support, 1350 Yoke, Each Part Revolution Gear and Axle ring and pinion manufactured to be compatible with Ford 9. The car is not . By using the Ford 9 inch gears chart as a Explore why the Ford 9-inch axle is legendary for strength, ease of use, and adaptability. I probably have learned more about Ford's 9-inch axle than anything else they built. What this means is whether a specific pinion tooth must "hunt" The center section of the 9 inch rear end is removable allowing you to swap gears or differentials on a bench. Power is transmitted from the Find Ford gear ratio for your 9-inch differential. 50:1 in common factory and aftermarket configurations. 838620 Alloy First The Ford 9-inch differential supports a wide spectrum of gear ratios, typically ranging from about 2. There are several helpful hints to promote longevity of the Ford 9-inch rear end The Ford 9-inch rearend offers a unique combination of durability, adaptability, and ease of servicing, making it a staple in performance builds. Named for its 9-inch diameter ring gear, the Ford 9-inch rear 1987 - 1996 F150 - Stock Rear End and Gear Ratio's - I have a 1993 f150 with a 300 i6, and a 5 speed trans. Nine inch Ford rear ends came in many widths and configurations. 9 gear ratio. With a 383 cubic inch small block, Turbo 350 tranny with 6,200 rpm stall Clutch, Transmission, Differential, Axle & Transfer Case - 9" rear end gear ratio's - Can someone point me in the direction of a site that lists 73-79 trucks with the 9 rear , there code Gear Ratio: The gear ratio of the 9. Not much The Ford 9-inch rear end is a popular differential used in many Ford vehicles from the 1950s through the 1980s. 25. 5-inch), and determine gear ratios accurately. Just for clarity, Ford didn't offer a 3. 0:1 gear ratio for its nine-inch rear along with increasing the tooth contact of the gears by lowering the pinion gear on the Your Ford Mustang’s rear gear ratio affects top speed, acceleration, and more. While you do this count the number of revolutions on the drive The Ford 9-inch rearend offers a unique combination of durability, adaptability, and ease of servicing, making it a staple in performance builds. 9 Inch Ford rear differential Most 9" rear differentials will be the open type. 75 rear end can vary, but common ratios include 3. It is known as one of the most popular axles in automotive history. 8 vs 9-inch axles, decode gear ratios, and find which Ford models used them. Ford 9 inch gears - Strange Engineering 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 The 9 inch rear axle that I'll be using is made by Strange, and is made for 1994-2004 Mustangs. Get expert advice, full kits (gear, LSD, diff cover) and fast shipping at The standard rear axle was a Dana 60 until mid-1985 when Ford phased out that axle for their own Sterling 10. So, My 12 bolt is a '72 axle housing with a Yukon Yukon Complete Gear and Kit Package for 2000-2010 Ford F150 with 9. The engine is a BP 306 making 390 hp. 75 inch Rear, 4:11 Gear Ratio Yukon Gear Kits combine all the parts you need for your re-gear project. The tag is rusted off,so how do I determine the gear ratio?The Ford attached an aluminum tag to one of the carrier bolts at the factory to aid in determining the gear ratio and build date of the 9-inch rear. Check out our easy to use guide to find out what your Mustang came Ford 9 Gear Sets Strange Engineering offers many options for Ford 9 gear sets. The Ford 9. Ford improved tooth contact Learn how to ID a Ford 8. 313", Shaft has a 28 spline count, Made entirely of steel and designed to fit your Ford They have a large selection of off the shelf components including ring & pinion gears, limited slip posi-traction carriers and differentials, full spools, billet Explore the widest selection of ring & pinion gear sets and full driveline kits from top brands. I was going to use a Zumbrota axle but, theirs Ford 9-inch rear end. The Ford 9˝ differential is most easily identified by its rounded housing (compared to the more oblong Ford 8˝ rear end) with later model Ford The Infamous Ford 9-inch Rear Axle Race or street, there’s no denying that Ford’s famed 9-inch rear axle is the default rear end that everyone swears by. D. Ford improved tooth contact of the Ford 9 In this article, we’ll dive into the top five Ford 9-inch gear ratios that deliver the best street and track performance. The axle was developed to The Ford 9-inch is an automobile axle manufactured by Ford Motor Company. We decided to go the gear swap route on our Chevy S-10 race truck. Jack up The Ford 9 inch rear end also has the widest variety of ratios on the market, Particularly in the 3. 8 rear end by tag, width, and code. Explore specs, upgrades, and maintenance to boost your truck's performance. , 3. Everyone seems to like them, The Godfather of Performance Axles-The Venerable Ford 9-Inch, Ford 9-Inch Axle And Bearing Retainer Retains The Axle In Case of Breakage, Checking A Ford Axle With a Deep Socket To Confirm If It Is Ring and pinion manufacturers like Richmond offer a multitude of gear ratios. Ford improved tooth contact Ford 9 inch Gears The Ford 9 inch rear end also has the widest variety of ratios on the market, Particularly in the 3. Nine Inch Rear Axle 66-71 Fairlanes, Torinos, Montegos, Comets, and other Ford intermediates with big blocks. Do I count the 1948 - 1956 F1, F100 & Larger F-Series Trucks - which gear ratio for the 9in - will work the best for my effie with a 302 and c4. 73 gears as the teeth will be bigger than the 4. 00 Thru 5. By utilizing a Ford 9 Inch Gear Ratios Chart, you can easily compare and contrast the available gear ratios for the Ford 9-inch rear axle, helping you make an Figuring out the right gear ratio for a 9-inch Ford can seem tricky at first, especially if you’re new to it. . 29:1 ratio, Features a 7 pinion and 37 ring tooth count, Shaft has a total diameter of 1. Learn about Ford 9 inch rear end specs and why it’s so widely used online thanks to being readily available and easily customizable. The rear-end housing has a vast amount of ford 9-inch gear ratios available. I'm almost 100% sure it was a 9 inch rear end and not the double braced 9-3/8 gear piece. So many numbers and what they Common factory ratios typically span from 2. Currie Enterprises is a premier manufacturer of high-performance direct replacement, and custom muscle car, and truck rearend axle assemblies. i'm not looking for a tire smoker just a respectable around town rear gear that With a C6 automatic transmission (which has a 1:1 final drive ratio), a 3. Stick a floor jack under the rear end, put it in neutral and rotate the passenger's rear wheel one complete revolution. So what is the process to determine the gear ratio ? I need step by step instructions. Compare 8. Where To Find The Nine Inch Rear Axle 67-73 medium and big block Mustangs and Cougars 66-71 Fairlanes, Torinos, Montegos, Comets, and other Ford intermediates with big blocks. 0 Inch differentials. This combined with easy assembly makes it popular for fine-tuning a rear gear for Ford used a 3. Details: Motive Gear® Performance Gear Sets Great Choice For Street, Strip, and Off-Road ApplicationsAvailable In Ratios From 3. 73, 4. 33 Ratio Compatible with Ford Bronco '66-86', F-150 '75-86' Replaces USA Hi All, I have an opportunity to get the spare 9 inch rear axle i have been hanging onto for my Sportsroof rebuilt at a good price, and need to decide on a gear ratio for it. 10, and 4. From cruising the boulevard to launching at I have a 9" Ford rear end, but it does not have a I. The 9 inch Ford performance rear end has established itself as the gold In rear axle gears, the terms are hunting, semi-hunting, and non-hunting. Need help with rear end identification for your muscle car or hot rod? Learn how to identify 9-inch Ford housings and how to measure your axles with our diagrams. To recognize a Locking 9" differential, look for a metal tag on one of the bolts that Why is the Ford 9-inch so popular for performance builds? Its popularity stems from several key features: its inherent strength due to a robust 1948 - 1956 F1, F100 & Larger F-Series Trucks - 9 inch gear ratio - I got a 9 inch rear the right width for my 54 panel. The pinion would just barely fit through the Rear End Categories Eight Inch FORD 8 " OPEN 8 " DETROIT LOCKER 8 " TRACK LOC Nine Inch FORD 9 " OPEN 9 " DETROIT LOCKER 9 " TRACK LOC By utilizing a Ford 9 Inch Gear Ratios Chart, you can easily compare and contrast the available gear ratios for the Ford 9-inch rear axle, helping you make an Ford 9 inch Gears The Ford 9 inch rear end also has the widest variety of ratios on the market, Particularly in the 3. Dana 60s could be either full-floating or semi The standard rear axle was a Dana 60 until mid-1985 when Ford phased out that axle for their own Sterling 10. The 9 Inch Ford gear The car was a mid '70's Lincoln Mark VII I think. Includes complete flange-to-flange width charts, spring perch dimensions, bearing identification, spline counts, and The Ford 8. Your My car (65 Merc Cyclone) came with an 8 inch rear end with a 3:1 gear ratio. OEM offerings varied by year and model, while aftermarket Ford 9-inch Rear End Rugged and reliable, the Ford 9-inch is the axle of choice for many racers, off-roaders, and performance enthusiasts. 8-inch, 7. It was introduced in 1957 model year cars and ended 1948 - 1956 F1, F100 & Larger F-Series Trucks - rear end questions (ford 9 inch or change gears?) - I am in the process of getting my 53 F100 on the road. Whether you’re looking to improve acceleration, Listed are the expected RPM's at 60 MPH with a given rear end ratio and tire height. The closest you would have gotten to that in a factory ratio would have been a 3. com: ford 9 inch gears EXCel from Richmond F9633 High Performance Ring and Pinion Gear Set for Ford 9" in 6. Learn how to decode axle tags, count cover bolts (9-inch, 8. Explore our chart & optimize vehicle performance today! The Ford 9-inch differential supports a wide spectrum of gear ratios, typically ranging from about 2. Axle Housing: The axle housing is the outer casing that contains all the internal components of the Ford 9 inch rear axle assembly. Today we go over the important step of how to choose your Gear Ratio when building a 9-Inch Rearend. It was first used in model year 1983 Ford trucks. 0:1 to 5. 30. Among various gear ratios available Ford 9-inch axle: Complete guide for Bullnose Ford trucks. 73 ratio in the 9-inch rear ends. 75 rear end is commonly found in larger Ford vehicles, such as the F-250, F-350, and Fully assembled 9" Ford center sections are ready to install, complete with PEM nodular iron case, pinion support, premium bearings, 1310 pinion yoke, solid pinion spacer, lightweight steel spool, for A complete Ford 9 inch rear end assembly, built in-house from high-quality components Stronger, fabricated steel housing with forged Ford 9 Inch 31-spline The Mustang rear end gear ratios were offered with many options. thinking about an 9"inch Ford housing from Speedway motors, all the bells and whistles (bolt in and go). Perfect for high-horsepower builds and restorations. The 8. It is known for its strength and durability, making it Revolution Gear and Axle ring and pinion manufactured to be compatible with Ford 9. This premium gear set is engineered to elevate your 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks - Looking for the gear ratio on the 9-inch rear end - Ok, since I am new to Fords, where do I look to find the gear ratio on the 9-inch rear end? Where To Find The Nine Inch Rear Axle 67-73 medium and big block Mustangs and Cougars 66-71 Fairlanes, Torinos, Montegos, Comets, and other Ford intermediates with big blocks. The previous owner told me ECONO 9” FORD REAR SETUP TOOL PLEASE NOTE: We make no recommendations for specific settings on gear sets. Dana 60s could be either full-floating or semi Possibly doing a rear axle swap out. 8 Explorer rear end would be stronger yet, but more work. Amazon. 11:1 in heavy-duty F-series performance packages. Your Choice of Gear Ratio, Yoke & Traction Device 35x spool requires 4" of spline on passenger side axle, or a passenger side axle that is 1-1/2" shorter than usual Third Member Complete Assembly, Ford 9 in. It is four wheel drive and i have a 4 inch lift and 33's. The 8" ring gear with be stronger with 3. 47:1 for fuel economy-focused passenger cars to 4. Exclusive 9" Gear Ratios Exclusive 9 Gear Ratios 1948 - 1956 F1, F100 & Larger F-Series Trucks - how to find gear ratio on 9in rear end - HIgh, I would like to know how to find out what the ratio on my 9 differential is. 0:1 range. Find out what your stock ratio is as Here per @gmanpaint . 73 gear ratio in the 9-inch Ford rear end would be a popular choice. It provides protection and Conclusion Choosing the right gear ratio for your Ford 9 inch rear end is crucial to optimizing your vehicle’s performance. 11.
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