2] There are more gear ratios available for the 9-inch Ford than any other rearend out there. Ford Rear End Product Details - More about how our rear ends are built. The aftermarket has responded to this by offering a plethora of ratios ranging from 2.91 to 6.50:1. 74-75 medium duty large bearing, and. 1. Using the chart below, we know that this axle is a 7.5-Inch axle with a 4.10 limited slip. The following chart of Tire sizes and axle gear ratios are meant to give a general idea of the relationship between the differential gear ratio and the tire size and what effect the ratio has on power output and fuel economy. We stock and service Standard, Nodular or Aluminum Yukon, Moser and Strange Cases too. Axle Widths: 1965-1966 Mustang 57.25 inches. Many vehicles have been produced. If not, you can use this method:Block the front wheels so that they cannot move.Jack the rear of the car up so that the rear tires are off the ground.Put the vehicle in neutral (but not running).Mark the driveshaft somewhere you can see it from a safe area.Rotate the rear wheel towards the front of the car one full rotation while watching how many times the driveshaft turns. GM Chevy S10 82-04 Complete 9" Rear End Package. Step 4. FREE Shipping by Amazon. The Ford 9-inch is an automobile axle manufactured by Ford Motor Company.It is known as one of the most popular axles in automotive history. $107.09 - $587.99 Shop Now. A ratio of 3.55 will get you down the drag strip quicker than most stock ratios, but 3.73s or 4.10s are an even greater improvement and so on. Most 9" rear differentials will be the open type. A complete Currie 9-inch third member makes it easy to update your street rod, muscle car, or truck with a new gear ratio or performance differential. The gears and the carrier have proven to be significantly stronger than the 10 and 12-bolt Chevrolet, which use smaller 8-1/2” and 8-7/8” diameter ring gears, respectively. Heat Treated for High Shock Loads. 4. The car was a mid '70's Lincoln Mark VII I think. For example: I am looking for Ford 9" Rear end Gears with Ratio 3.50 to 3.89 in Great Condition or New. Ratios for every need, whether it's for street, highway, circle track or towing. Street Car. Applications: Ford Used The Dana 70 And Dana 70HD Axles In F-350 Trucks Up To 1985.5. GM 8.6" 10 Bolt. Axles Tubes Are 4-Inches. If it goes about 3 1/2 times then you probably have about a 3.50, if it goes almost 4 times around then you have a 3.90 etc. 2.75 open differential. A. All the Galaxies I have seen from throughout the 1960’s used the 9-inch rear, regardless of engine size. The original applications are as follows: 1. The chart consists of several columns that represents ratio, ring teeth, common factor, … Width: all measurements are flange to flange 67-71 Comet, Cougar, Mustang, Fairlane = 59.25 inches 65-66 Mustang = 57.25 inches 67-70 Mustang = 59.25 inches There are 4 different sets of rear axles that would have come stock in 66-77 Broncos. 1957-1959 Ranchero and station wagon. 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. Replacing a Mustang's stock rear gears with a higher ratio will give you quicker acceleration, greatly improving your 60 foot times--depending on what ratio you choose. ... How To Identify 9 Inch Ford Housings Chart via Speedway Motors. Door 429. One way to do that is simply multiply the Gear Vendors' overdrive ratio of 0.78:1 by the gear ratio to create our effective ratio: 4.10 x 0.78 = … 0. More Buying Choices. be sure the rear end is complete since some parts are no longer available. I'm almost 100% sure it was a 9 inch rear end and not the double braced 9-3/8 gear piece. Free UPS Ground Delivery in lower 48 States. 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. Identifying Ford Vehicles Equipped with OE Traction Rear Ends. The Axle Ratio is stamped on a Gear Ratio Tag on the axle cover. You are correct sir, these are the standard ratios for 65-66. Please select a rear end that matches your vehicle below.Ford has a wide range of front and rear ends! 2021 Ford Bronco. Automatic Locking Differentials ... 1957-1983 | Ford F-100 1968-1987 | Ford F-150 1966-1986 | Ford Bronco. GM Truck Complete Rear End Packages. Calculating the torque multiplication that your axle gears provide is quite easy. also the granada-monarch versailles front disc's aare a bolt on. Not all gear ratios are available so you have the choice between 4.88 and 5.13, 4.88 being the closest. Since 2011, V6 and V8 Mustangs have used Ford’s 8.8” rear end, but before that many used a 7.5” rear. Check out the new Ford Bronco! If it goes about 3 1/2 times then you probably have about a 3.50, if it goes almost 4 times around then you have a 3.90 etc. If you have such an equipped Mustang and still feel that 3.73’s are not enough, the next jump is up to 4.10’s. GM B-Body Complete 9" Rear End Packages. USD 321.93 321.93 1 321.93. Our expert customer support technicians are available Monday through Friday from 7:00 a.m. until 7:00 p.m., CST. 76-77 large bearing. For example: The tag will say: 350 for 3.50:1 ring and pinion gear ratio. 9310 Alloy Steel. 77-81 Lincoln Versailles. Then the formula would be calculated as: (38*3.91)/30 giving you 4.95. Pick the tire hiegth, pick your gear ratio. Count the times your driveshaft revolves per one complete wheel revolution as you rotate the back wheel towards the car’s front. ...Keep your front tires from moving by putting a block in front of them.Lift the truck’s back end so that the back tires are above ground level.Place the vehicle in neutral while it is lifted off the ground.More items... Ford 9 inch Gears. View our Top Ten 1969 Mustang photos. The 9&Quot; Ford Rear. You can also lift the rear end up, mark the rear drive shaft & also a tire & count the revolutions. The ring gear measures 8.8 inches in diameter with the single-piece case bolted with 10 7/16X20-inch threaded bolts. $12,000.00. 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. USA Standard Gear (ZK F9-A-SPC) Master Overhaul Kit for Ford 9 LM102910 Differential with Solid Spacer. 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. I cannot say for ratios after 1978, I quit looking after I found what I needed so I don't know much after that date of manufacture. If you know your axle tag number, simply go to the second table. A guide to deciphering the rear axle code displayed on the VIN (warranty) tag of your 1973-1979 Ford truck. Explore all of our Ford 9 inch Third Member products online today. the stock Ford design sliding calipers tend to wear off one side of the rotor. 100 x 4.12. The 351 and 400 engined cars that I have seen used the other rear axle, none the nine inch. Only show this user. The only ratios available from the factory were 2.83:1, 3.20:1 or 3.50:1 If the tag is still on the back of it, it should say WCY- something. Item #: F9-325-YG Yukon Gear. The chart below may be of some help in deciding what rear end ratio is right for you. Listed are the expected RPM's at 60 MPH with a given rear end ratio and tire height. This chart applies to all Ford non-overdirve transmissions, manual and automatic. Power is transmitted from the transmission to rear end 1:1 in high gear. 1972 Ford LTD 2. Particularly in the 3.0:1 to 5.0:1 range, there's … 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. Besides producing car, Ford also creates its own gear. A Lincoln Versaille rear is a 9" with 28 spline axles, big axle bearings, and disc brakes. Owen Sound 07/04/2022. Hypoid offset is the distance between the centerline of the pinion and the centerline of the ring gear. The 1966 Mustang had 14 possible rear gear ratio/differential combinations. Stick a floor jack under the rear end, put it in neutral and rotate the passenger's rear wheel one complete revolution. The speed you want to drive at, usually 75mph . A low ratio gear is high, numerically. Non-Hunting Ratio. That is why I chose to use a Dana 44 in my CJ which has a more centered pinon. There are a few exceptions that you will see in the Ford Axle code chart. “Pro” gears are designed specifically for drag racing. The very rare optional 6 cylinder rear was the 3.50. Ranger: Code: ... Yukon Gear & Axle Standard Open and Positraction Carrier Cases. The heat treated aluminum alloy well suited to absorb high impact shock loads. Find your transmission and rear gear multiplier below. i.e. 67-73 medium and big block Mustangs and Cougars. I suspect that Lincolns might have been the same. 1967 Cougar 60 inches. (C)opyright 2007-2022 MustangAttitude.com. It has bolts around the back instead of nuts around the front. Only show this user. 1971-1973 Mustang 61.25 inches. The following table shows the various Ford part numbers and gear ratios for the matched ring and pinion gear sets used on 1928 through 1934 Model A (103-1/2" WB) and Model B (106" WB) Ford car and commercial chassis, not trucks. Gear Ratios - RPM from Speed, Rear & Trans. Richmond Tech Support. 429 motor tow package, 9 inch rear end 15,000 miles and 2 door Original miles 15,000 All original parts. 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. 2.50 open differential. The same applies to vehicles with codes containing numbers alone. GM 8.2" BOP (Buick, Olds, Pontiac) GM 8.2" 10 Bolt (Chevy) GM 8.5" 10 Bolt. Third members for any Ford or Mercury using a removable carrier. However, 4.10:1 is a real steep gear. The gear ratio of each overdrive gear of your transmission. Only 18 left in stock (more on the way). Ford cars and trucks from 1968 on have an axle code on the Certification Plate, information on this plate can be used to determine if you vehicle is factory equipped with a limited slip positraction rear end - differential. If there is an "L" in between, you should have a locking or limited slip … Most of the versailles had gear ratios for freeway cruizing but the 9's are easy to change. Ford 9" - 3.25 Yukon Ring and Pinion. Contemplating between 3.25 and 3.50 gear ratios. Stick a floor jack under the rear end, put it in neutral and rotate the passenger's rear wheel one complete revolution. $11524$135.86. You plan on moving up to 38". Recent Featured Vehicles. The pinion would just barely fit through the hole in the case. 2000 - 2002 Front Axle Model Designation changes. The Ford 10.25-Inch Rear Axle Replaced The Dana 70 After 1985. We carry everything from the 8" IFS front end parts, to the large 10.5" rear end parts for F-Series trucks.We make it easy to verify your exact rear end by providing specs and year, make, and model applications for each … There were more ratios than this but, some of the main factory 9-inch ratios were: 2.47, 2.50, 2.75, 3.00, 3.25, 3.50, 3.70, 3.89, 3.91, 4.11, 4.30 and 4.57:1.
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