76-77 large bearing. Ford 9.5 PRO GEAR* *PRO GEAR RATIO PART NO. 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. For a better experience, please enable JavaScript in your browser before proceeding. This is because the supply is limited to Variations The N cases typically came with the larger Daytona-style pinion support bearing, and 31-spline axle shafts. For reference, this section from the Ford MPC is posted . GM Tri 5 55-57 Chevy Complete 9" Rear End Package. It was not the only axle used, but was by far one of The code, 4L11, tells us that it is a 4.11:1 ratio with a limited-slip or Traction-Lok differential. It 31-spline car shafts. if not I have other 9" info archived I can post. Fords small block and big block engine families have their share of flexplate differences. Generally most cars received the small axle bearings and 28-spline axle That is your vehicles axle code. There is typically a stamped steel cover that must be removed to gain access to the internals. The Ford trucks and cars from 1968 onwards are equipped with the Ford Axle codes, which are clearly indicated on the certification plate. However, the critical aspects of the rear axle are the axle flanges and axle lengths. 5.4L (including Lightning) and some 44 super cabs and higher GVWR models which were equipped with the heavier-duty 9.75-Inch rear axle. socket size and 7/16" fine thread. Chevy differentials: how to rebuild the 10- and 12 . most abundant. Ford 9 inch Gears. and Fairlane axle housings are often grouped together because they are the The rear-end housing has a vast amount of ford 9-inch gear ratios available. Note: Rear axle ratios are available for 2008 and newer models. 1973-1979 Ford Truck Rear Axle Codes. pattern in most cases differed from the car, and due to the bearing size It's uncertain if this E Rhodes Race Cars Unwelded Fabricated Rear End Housing Ford 9 in. Some of the heavier cars like the Galaxies also received the People tend to be drawn to it like a magnet. For example: The tag will say: 350 for 3.50:1 ring and pinion gear ratio. Hypoid offset is the distance between the centerline of the pinion and the centerline of the ring gear. Watch the video for all the details and you'll wonder why your shop hasn't had a set sooner! 66-75 large bearing, 3. shafts. 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 . 4. Keep in Gross Vehicle Weight ( GVW ) would can easily tell this is a 9-inch from the hump in the rear and (2) 7.5 inch, 8.5 inch, 10.5 inch. Most of the time, the differences are in shock and spring mounting brackets and, of course, brake hardware. Because With 568 Ford 9 Inch Parts for sale, you're sure to find the ideal parts . Learn more. Leaf Spring: The Similarities And Differences, Front Axle Of A Car: Types, Functions, And Replacement, CV Axle Boot: Overview, Signs, And Replacement. Measuring from axle flange to axle flange (measurement A in the diagram below) will give you total axle housing width. The 1960s to 1967s still retain the dimples but also have an oil level plug in the back cover. mind as mentioned, the Fairlane spring perch distances were not the same applications due to the demise of most performance engine options in the Front Axle Codes While the parts catalog says "The third digit of the axle code identifies the ratio and/or capacity of the front axle", that is not true.As seen below, there are only 4 codes (2 - 5) and they do not define the axle ratio nor capacity.In fact, to find the front axle ratio you need the codes off the axle itself, as shown here: Differential Gear Ratio Calculator. The instructions below will walk you through the steps. An assortment of Ford 9-inch axle stampings is welded together to create the housing. Here is an example of a weld repair on a factory original housing. and 429CJ cars.From what I have seen don't expect to find them in 390 or Aftermarket vendors are actually re-casting these cases in very strong nodular iron, so more often than not it is easiest just to purchase a new case. Builder V8 Billys 1966 Ford Fairlane Twin Turbo 427 RestoMod was built for Street and Strip. Mustangs The Fora platform includes forum software by XenForo. The 9 Ford rear axle, so called because of a 9 ring gear diameter, is the choice of many circle track racers because of its strength, availability and ease of maintenance. The same applies to vehicles with codes containing numbers alone. 31-spline car shafts. This is a sampling of some of them. housings appeared in either 1966 or 1967 with the familiar "Hump" We have a large selection of gear sets in stock and can recommend the correct . This particular pinion cartridge is well reinforced and much stronger than the stock production cartridge. The very rare optional 6 cylinder rear was the 3.50. 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 . Now that you have identified the axle code, let us know the axle ratio. Johns Industries Nodular Iron Assembly N1905JI $1728.00 With Open (New Gear) With Full Light Weight Spool $1409 With Trac-loc $1770 With Truetrac $1974 This third member comes with: A new, U.S.A. made John's nodular iron 9 inch case Case one pound lighter than the original Ford case Rated for up to 750hp A new U.S.A made John's billet aluminum pinion support A new forged pinion yoke of your . housings. Nine Inch Rear Axle. Performance Front & Rearends GM Vehicles same width, but the distance between spring perches is different between See all 20 photos. 3. housings appeared in either 1966 or 1967 with the familiar "Hump" These first became available on the 1964 Galaxies with the 427-ci engine and were found on many higher horsepower cars and trucks. This was an 8.75- inch ring gear in a 9-inch housing. Remember to locate the Safety Standard Certification label on the left side door post as you open the door. The 7.5" rear end is also flat on top and bottom. Drag Racing 101 ~ Everything You Need to Know! Most 1972 and earlier 31-tooth spline shafts can be shortened and 1973 and later versions typically cannot be resplined. Width: all measurements are flange to flange. 1967-1973 Mustang, Torino, Ranchero, Fairlane 9-inch 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. It is still used in NASCAR racing as well. These were used sporadically until about 1969. So, after crawling under just over 50 Cars, trucks etc at the local Upull, I found that a 1995 2wd 2.3 Ranger has the correct length driveshaft at 47.5".chevy truck driveshaft length chart. It was not the only axle used, but was by far one of This is when making a few phone calls to reputable axle builders can be helpful. One exception to this was Most of the later trucks There are a few exceptions that you will see in the Ford Axle code chart. used the 9-inch rear, regardless of engine size. Buyers Guide. The 9-inch housings center section will not allow the socket to clear, and you must remove the two bottom retaining nuts with a boxed end wrench. Theres an easy way to tell an 8-inch apart from a 9-inch. It was required to repair a leaking weld. Any of the W-series cases do have a fill plug machined in them. 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. Ford personnel and/or dealership personnel cannot modify or remove reviews. 1-wire alternators are perfect for engine swaps or just keeping things simple for your project. it was very complete. popular early swap being the 1957-1959 Ford for the 1965/1966 Mustang. them. While the larger offset makes the ring and pinion gears stronger, the additional sliding of the gear teeth creates more heat in the axle. Boss 429s, 427s, 428 CJ/SCJ and the 429 cars which received the There are even different pinion cartridges that have been available from the various production years and models for this axle. This includes the Center Case, the Pinion gear, the ring gear, and the differential or spool. There are several reasons for this. if one wants to use a 31-spline truck carrier in a car. differences, 28-spline car axle shafts are much more abundant than the With its 2.250-inch offset, the Ford 9 inch gears hypoid distance is greater than popular competitors, most of which are at 1.5 inches or even less. and Fairlane axle housings are often grouped together because they are the Find your transmission and rear gear multiplier below. the few cars and early Broncos (and some early trucks) which received This sensor is for the anti-lock brake system. Due to factors beyond the control of WJ Handy Dad, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. for the 1971-1973 Mustangs - cars with 351 engines and up receiving the 9-inch 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. The fundamental difference between these axles is how the gears are supported and which end of the axle housing (front or back) that they are assembled from. The first two digits of the axle code identify the ratio and capacity of the rear axle. 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. If the socket fits (as shown in our photo below) it is a Ford 8-inch housing. at car swap meets and shows are the units pulled from trucks with the We offer a guide to follow when selecting a new set of brake pads for your race or street car. Ranger Read this first! The Ford 9 inch rear end is one of the most popular axles in automotive history. "N Case" was no longer needed for passenger car/truck always looking for good content to share with 1972 and earlier, 31 spline axles have the ability to be shortened. (See Chapter 8 for how to install a 9-inch in a classic 1957 Chevy Bel Air as a performance upgrade.). Of course, if your budget allows, you can purchase an aftermarket iron case that is stronger than any factory case. A simple formula to calculate Gear Ratio or Axle Ratios. Keep in 67-71 Comet, Cougar, Mustang, Fairlane = 59.25 inches. (narrowest 9-inch housing), 1966-1977 Bronco 58 inches but has 5-on-5 1/2 inch For Example: 235/45ZR-17 (235 x 0.45 x 2 25.4) + 17 = 25.327" And here's a formula that you can use to calculate your vehicle's rear axle gear ratio: RING GEAR TOOTH COUNT PINION GEAR TOOTH COUNT = GEAR RATIO. 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. Some have only one access hole for the backing plate bolts, while others have three. Axle code. Ironically, 8.0-inch independent carriers were made in cast iron. in cars and trucks. The third member supports all of the gears and bearings, which allows for easier gear ratio swaps if you have multiple third members. How To Recognize 9-Inch Housing You will need to get your hands on your manufacturers axle code chart for this part. Dont be surprised if the tag you have does not exactly match this. station wagons-cars with 351 and up engines received 9-inch units - as did . It was also used in the 1983-1996 full-size Bronco, and E150 Econoline . found in the trucks up to around 1982. 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. Our aluminum cases are manufactured from premium material sourced in the USA, designed and machined in-house, and offered in various forms to meet the requirements of the most demanding applications. The leaking weld area is then ground down and a MIG or TIG welder is used for the repair. As you proceed to the Ford Axle Code chart, you will notice that the table indicates it has a Ford 8.8 Limited Slip Differential with an Axle Ratio of 3.55. This is a relatively common issue on these housings. Read more: CV Axle Boot: Overview, Signs, And Replacement. Measuring for your 9-inch axles requires a few basic measurements to be taken. Over several generations of small block Chevy (and big block Chevy) engines there have been several changes that dictate what flexplate works with them. Would very much apreciate it if someone would post it again. The rear end width is important on shoebox Fords if you want some selection on wheels. How To Identify 9 Inch Ford Housings Chart via Speedway Motors. When narrowing a Ford 9 inch rear end, the first step is determining the overall length you need. Axles were similar to the Ford 9-inch 28-spline units. and trucks throughout the 1970s. The same applies to the rear differential. Pairing your vehicle with the wrong axle components will not only damage your vehicle but cost you a lot down the line. many half ton trucks continued to utilize the 9-inch (both 2 wheel & 4 While the 8.8 is similar to the 12-bolt, it isnt identical. A copy of the Ford Axle Code Chart is linked below in this article. Besides the styling of the Ford Edsel, even the axle shafts were very unusual. 1964-1971 Falcon, Comet, some 1965-1969 Mustangs or 1964-1967 Ranchero V8 cars. duty.And believe it or not, they were also used in some FE equipped Ford It is a column with the label AXLE on top and the Axle Code at the bottom. 1973 and later cars have a 55 bolt pattern, and the axles cannot be shortened. truck housings received even beefier center carrier housings and tubes, dimples. Click on the 'Submit' button to find out how you The Ford 9-inch can be found under 1974-1986 F-150s and 1978-1986 Broncos. Gear Ratios - RPM from Speed, Rear & Trans. Remember this is the RPM based on no slippage at the torque converter so your actual RPM will be different during acceleration or times when the torque converter is slipping.3.55 gear: https://amzn.to/2HMrffx3.73 gear: https://amzn.to/2r0MakF4.10 gear: https://amzn.to/2JouvuH#wjhandydad #crownvic #reargear #gearratio #DIYhttp://www.WJHandyDad.comDisclaimer:Due to factors beyond the control of WJ Handy Dad, I cannot guarantee against improper use or unauthorized modifications of this information. some 302 4V cars with optional gear ratios). Ford Axle codes help identify the vehicles positraction as well as an axle to gear ratio. 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. Ring Gear/Pinion Gear Teeth to Gear Ratio. 6. 70's. 74-75 medium duty large bearing, and. In most cases, the tag has been lost. also received the larger axle bearings housings. 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. 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. actual car posi units, which were primarily 28-spline carriers, can be For the Ford 9" rear end to be smaller and lighter than a Dana 60, the weight has to come from somewhere. It was in production on many Ford cars and trucks, first appearing in 1957 and finally replaced by the Salisbury-style 8.8-inch axle in 1986, saving about 50 pounds and boasting increased efficiency. Many aftermarket companies produce 9 Ford equivalent rear axles for the drag racing and hot rod industry. The first table is the code and gear ratio. In the early days of hot rodding, with the majority of hot rods being Fords, it stands to reason the '30s and '40s Ford "banjo" rearend dominated the scene. determine which axle housing many cars and trucks received. Notice the 8.0-inch ring gear diameter cast into the rear cover below the fill plug. 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. You can install a true 9-inch gear in these housings as well. If measuring the drum-to-drum distance, add .200-inch to these values. Proceed to match the code with its corresponding Axle Ratio column on the table to find the ratio. The Ford version uses larger axle shafts and different lube flow strategy. It has been said that it has a higher 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. Ford used A 2-inch version is not shown. There are also unique domestic special-option tags, which dont follow the format. duty.And believe it or not, they were also used in some FE equipped Ford This allows quick gear ratio changes to accommodate different tracks or updates to your vehicles horsepower and torque ratings. applications due to the demise of most performance engine options in the Some of the heavier cars like the Galaxies also received the but the link i was refering to listed codes by year and model. mind as mentioned, the Fairlane spring perch distances were not the same Trust Speedway Motors for best-in-class parts for Ford 9 Inch - delivered quickly, efficiently and without any hassles. 13 lovely chevy 10 bolt rear end gear ratio chart. It has more ground clearance than a Dana 60. At this width, many were used in street rod applications without modifi cation. We'll also walk you through choosing the correct parts in order to make this installation a breeze! We will look at what axle codes are and how to identify the axle ratio from the code. 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. station wagons-cars with 351 and up engines received 9-inch units - as did This additional bearing and, more importantly, the necessary casting support structure is what drives the larger hypoid offset. i.e. by Ford exist in the size of the outer axle bearings in the housings and N-case. Snap On vs Daytona, Pittsburgh, ESCO, Husky, More. This chart applies to all Ford non-overdirve transmissions, manual and automatic. 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. Ford Differential Axle Codes. Today we go over the important step of how to choose your Gear Ratio when building a 9-Inch Rearend.Make sure to Like, Comment and Subscribe for more videos!. The Ford Mustang and Thunderbird used this style for a few model years. The Ford 8.8-inch axle has the same ring gear mounting distance (see Chapter 7) for all ratios, just like the 9-inch. 56" them. This video is a good example of what goes into the process . Applications: Ford Used The Dana 70 And Dana 70HD Axles In F-350 Trucks Up To 1985.5. The case 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. Mismatching issues are a big problem when it comes to automotive repairs. 52" If you liked this article you will LOVE the full book. There are three bearings on the pinion shaft: the two traditional tapered roller bearings for the head and tail bearings with a third cylindrical roller bearing on the opposite end of the pinion head. Discount is automatically applied. 1958-1959 two dimples on the back of housing, flat center band, some had drain holes. The other identification information, 9, as observed from the chart, indicates a 3.55 gear ratio of the Ford F-150. Ford differential tags are very . 1/2 ton 4X4 pickups! And you can find the axle code charts on the internet from your manufacturer. Original gear ratios range between 2.79:1 and 5.43:1, and aftermarket replacement gears are available for many ratios as well. H. 2.75 locking differential. "N 8300 N. Austin Ave Morton Grove, IL 60053 The the Broncos from 1966 to 1977, they stayed with the 28-spline units. tubes with flat tops, 1969-1977 Galaxies (coils), Lincolns (coils), and late pickups (leaf)- 3.25 Exceptions to this were the ultra Hi performance Boss 302s, * Pro Gears are specifically designed for drag race only. Start by opening the left drivers front door. FORD FINAL DRIVE RATIOS. Axle larger wheel bearing housings. for 1967-1970 (same as 1966-1969 Fairlane, Torino, Comet & Cyclone non I remember that the car had a bad pinion bearing and when I took the rear end apart the pinion would just barely fit through the pinion support hole in the case. Here is a picture of the milling machine cutting new spline teeth after the axle has been cut to length. We provide how-to and technical articles, vehicle and build features and examples, plus calculators and lookups that will help you get your ride from dream to driver. only need to carry one spare should you choose to. (often referred to as a "POSI") came to be a popular option and 2. Many companies, such as Currie Enterprises, Mark Williams Enterprises, Moser Engineering,and Strange Engineering, reproduce this design today. These tags were not that informativeon the early units, so from 1957 to 1962 the tag just referenced axle ratio. This is an easy way to identify the third members, so youre sure to buy the correct axle. (It was later used for pick-ups and Broncos.) The GoJak wheel dolly makes moving immobile vehicles around your shop easy as place, pump, and push! Ford 8 Ford 9: CLICK FOR MORE INFO. The additional straddle mount pocket bearing provides additional support to the pinion head during high-torque events. There is a very fundamental difference between Fords 8.8- and 9-inch axles. narrowed rear ends due to the added strength in the middle. So again, unlike the GM and Dana axles that require a unique differential with different ratios, the Ford 8.8-inch differential is common across all of the ring-and-pinion ratios. bearings, 28 and 31 splines, 57-68 passenger car and 1/2 ton truck - medium duty, stronger than Mustang medianet_versionId = "3111299"; The It is quite strong since it was designed to handel the 260 V8 engine, the 8 inch can also be beefed up for even more power with custom racing or Hot Rod parts. This strengthens the whole rear end assembly. 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 original applications are as follows: 1. Refer to the Axle Ratio table to determine your rear axle ratio and Limited Slip. Axle Ratio = (RPM X Tire Size)/ (Speed (MPH) X 336) Example 4.88 = (2881 X 37)/ (65 X 336) smooth backside. The cast-iron third member is installed from the front of the housing. A forum community dedicated to Ford performance owners and enthusiasts. Strange Engineerings superior line of Chrome Moly Transmission yokes are manufactured from high quality forgings and fully heat treated to achieve maximum tensile strength. shafts. These axles even have a unique bolt pattern of five on 5 inches. 61.25 inches, 1967-1971 Comets, Cougars, Fairlanes 59.25 inches, 1967-1973 medium and big block Mustangs and Cougars, 1966-1971 Fairlanes, Torinos, Montegos, Comets, and other the early housings are ok for the average street performance cars. 8.75, 9.25, Ford 9 inch, and GM's 8.25 inch . Visit the RV & Trailer Towing Guides page on the Ford fleet website. 65-66 Mustang = 57.25 inches. The Vintage 1980 Yamaha Enticer Snowmobile Revival to Former Glory. Filed Under: Ford Tech Tips, Rebuild Ford Differentials, The Best Ford Tech Articles, 2023 DiY Ford. Variations The image below shows the Safety Label of a Ford Truck. It is common to find a 9-inch in a old Falcon or Restoration matching issues will be avoided since the right optioned components will be used to make the restoration. Our experts will help you find the correct ring and pinion set for your particular application. Read more: Torsion Axle Vs. 1957 . Many people prefer to just call it the Ford 9-inch-style wheel end. MaritzCX moderates public reviews to ensure they contain content that meet Review guidelines, such as: No Profanity or inappropriate defamatory remarks, No Personal Identifying information (e.g., customer phone number or email), No Competitor references (e.g., another brand or dealership), Dangerous behavior (e.g. It was then replaced by the Ford 8.8 inch rear axle. These tags are typically quite beat up, twisted, and rusted over the years. The format has changed over the years but mostly follow this sequence:. Spring perches must be cut and re-welded in order Because of their strength, youll see these 9 inch rear ends used in just about every make of car, truck, and customs. Again, the overall first-gear ratio with the TH400 and 4.10:1 rear gear would be 10.168:1. GM Truck Complete Rear End Packages. GM Chevy S10 82-04 Complete 9" Rear End Package. Typically with just this information, you can cross reference what you need to know about the axle. 1/2 ton 4X4 pickups! The axle was developed to replace the Ford 9-inch axle.This axle is still in production today for a variety of Ford vehicles. (The third digit of the axle code identifies the ratio and/or capacity of the front axle, if applicable. Install Kits and Gears Sets Listed By Rear End. The 1958s and 1959s have two dimples on either side of the housing and some have drain plugs. replaced, and that is why it remained in use for so long. Why is the Ford 9in rear end the go to rear axle for street and strip builds for over 70 years? Produced from 1957 to 1987 by the Ford Motor Company, it was used in full size . Content. 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. It's . The primary purpose of this plate is to show you if your vehicle is equipped with a limited-slip to rear-end differential. Ford Rear Axle Assembly Identification - Page 01 . small bearing housing can be differentiated from a large bearing housing 1967-1973 Mustang/Cougar - light duty, thinnest housing material, small axle The axle identification tag is located at about the 3 oclock position under the third-member mounting nut when you are looking straight at the front of the axle. . First, the pinion shaft housing is removed from the front of the housing by removing five bolts. Part Category: Disc Brake Rotor and Hub Assembly.1999 Ford Ranger Rear Axle Assembly 7.5 RING GEAR, 9 BRAKES, 4.10 RATIO Genuine Ford Part Good Condition 70K Miles 1-Year Warranty Located at Orlando, Florida 32940 More Details $791.00 Sale Price Add To Cart Buy in monthly payments with Affirm on orders over $50. The 9-inchs very large pinion offset of 2.25 inches requires the pinion to be straddle mounted, which refers to the fact the pinion head has bearings that straddle it on either side. All the Galaxies I have seen from throughout the 1960s GM A-Body Complete 9" Rear End Packages. The Ford 10.25-Inch Rear Axle Replaced The Dana 70 After 1985. It is as easy to cut down as any other 8 or 9 inch Ford axel. While the 1350 u-joints provide enough strength to handle most demanding of applications, Strange also offers a variety of yokes with1480 u-joints for the ultimate in driveline strength and dependability. For the Ford 9" rear end to be smaller and lighter than a Dana 60, the weight has to come from somewhere. and trucks throughout the 1970s. Axle Ratio : Axle Ratio : Diesel: 5.13: 4.10: 3.55: Gas: 4.10: 3.55 : Trans Ratio: . There is a ton of aftermarket support for this axle (see Chapters 3 and 4 for more details). This will ensure that the correct replacement parts are purchased or salvaged from a junkyard to be used in the vehicle. Well help you determine the correct flexplate for your Chevy engine in this buyers guide. Using the correct part is imperative to engine longevity and proper drivetrain assembly. The date code on this axle tag is 7AC, and it corresponds to the 7th year, 1st month (January), and 3rd day. The Maverick 8" or Ranger 7.5 and 8.8 are good options. at car swap meets and shows are the units pulled from trucks with the The 8.8 is a traditional semi-fl oat Salisbury axle with C-washers for axle retention. General Motors rear end differentials are referred to by the diameter of the ring gear, i.e. - Rod Stroke Ratio - Stroke Size Rear Gear Requirements - Rear End Gear Ratio Needed - Speed from RPM, Rear & Trans.

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