Buick/Olds/Pontiac axles are typically retained with bearings. (Rear Wheel Drive) +20 offset. '69 Firebird A: By casting numbers and date codes, along with other external characteristics, all of which are shown in the manual by Zach Davidson and Brad Duerst. The 10-bolt was used in all the low performance applications. No one is making new 31-spline side gears at this time, which is not good. '41 -48 Ford, '68-72 Chevelle BOP, Pontiac, Each. The following list '70's Ford Grenada In this 489 case it is 3:91 gears and a 1 7/8 pinion. S10. [ July 26, 2022 ] Reversing Gears ~ Rescuing One's Own Derelict 1967 Pontiac GTO Builds and Examples [ July 24, 2022 ] . "Hy-Tuff" axles are available for it from Moser and Mark Williams in any length (needed to . In searching the web I found the following links that have a massive of information on rear end widths and wanted to share. Information provided by:Joe GarciaThe Resto Rod Shop. L = Low - Zero to Negative Offset, Offset typically RWD (Rear . Below matches. Mercury Capri/Bobcat, Monte Carlo, Regal, etc. The Firebird rear end would have been a BOP 8.2 10 bolt. Plywood pieces work well for shims. "" "" ". may be different than pictured. Suspension Width (Flange to Flange), Ford Mustang II/Pinto & Aftermarket support followed in the form of beefy axles, gears, spools, couplers, and Mickey Thompson's aluminum and magnesium centersections. Originally posted by SUNNYD @Mar 22 2007, 10:23 PM~7534589. Pontiac/Olds rearends had been widely used full width under Gassers and other cars and even though lots of slingshot dragster pilots had their legs draped over a narrowed version, custom-width rearends were seldom seen in other applications and almost never under a street car. NFTs Simplified > Uncategorized > pontiac rear end width chart. '67 Chevrolet Six Dick this in no way reflects upon your statement but you make an excelent point when you stated " I read enough times that". Cars from all the traditional drag racing classes are being built and/or restored, but among the most popular of these period-correct builds are the cars riding high on solid front axles and sporting fenderwell headers: gassers. function SiteStats_3379(){ 0000000016 00000 n User Info. . Source for tire and wheel application fitment data. The final drive ratio is identified with 2 or 3 letters codes. The Dana rear end is a bolt in swap for the both the 8 3/8 and the 9 1/4, all rear ends can be had with the same size u joint yokes, vans are good place to. B-O-P axles also have identifying grooves traveling along each side of . Real World Hagerty Collector Car Insurance Claim Experience, How To Be Prepared For A Dyno Session And Not Waste Your Money, Holey Goat Father/Son Texas Road Trip 5 Days, and 2000+ Miles, Are You Killing The Hot Rod Community? 1940 engine numbers run 2697268 through 3665902. Privacy Policy. 0000008567 00000 n Approximate rear end widths measured from backing plate to backing plate. Wheel- Size.com The world's largest wheel fitment database. The 55-57 Chevy car rear-end is almost a bolt in, the perches need to be relocated to the top of the housing though. 4999 mm / 196.8 in, width: 1854 mm / 73 in, wheelbase: 2746 mm / 108.1 in; reference weights: base curb weight: 1653 kg / 3644 lbs ; . GMC V-6 '72 Cricket Interest in vintage drag racing is now approaching a rapid boil. The dana pinion stands forward about 2" more than the 9 1/4, the driveshaft will need to be shortened accordingly. Six rib cases will be found on '57 and '58 rearends, '59-64s have seven ribs. 53.6 -- 1971-'77 Chevy Vega, 1973-'77 Pontiac Astre, 1975-'80 Chevy Monza, Buick Skyhawk, Olds Starfire, 1976-'80 Pontiac Sunbird 112.0 coupe; 116.0 sedan,wagon, 61.5, 60.7 -- 1973-'77 Oldsmobile Cutlass, 442 Picture is from parts book. Another factor that made these rearends popular was the wide selection of factory gear ratios available, 2.56:1 through 4.30:1 while even lower drag racing cogs were available from aftermarket suppliers. While the Ford 9-inch is the perceived benchmark of popular rearends today, in stock form the edge would go to the Pontiac/Olds. Look at the RPO codes. The high-volume production runs of Ford-9 inch components allow them to be relatively inexpensive. 0000015097 00000 n plate to backing plate. Calculating the torque multiplication that your axle gears provide is quite easy. Vintage 1980 Yamaha Enticer Snowmobile Revival to Former Glory. I used 5" long lag bolts to hold the end pieces of wood on which permitted me to add up to 1.5" of shims to each end. Here you can see the three white paint splotches identifying the pinion size and the gears. The correct width for 59' & 60' is 63-1/4" I believe. GM / Chevy - Differential IdentificationShop by your differential. ; Home 2; Home 3; Home / / pontiac rear end width chart. Rear axle flange to flange is supposedly wider than the 68-72 AND the 78-88 GM A and G body cars. 71- Newer 2wd trucks use a 5 on 5 lug pattern Length, GM 8.2 in. hi don, there is no major difference in the pontiac differential from 1949 to 1956 other than rear brake related parts. Hot Rod Blueprints, Drawings and Tech Tips For The Hot Rod Enthusiast!. Last Update: Feb. 24, 2023, 5:12 a.m. (rear-wheel drive), automatic 3-speed gearbox . '72 Cougar, '74 Pontiac '49 Plymouth, '61 Chevrolet Impala '65 Cadillac, '66 Buick Wildcat '66-67 Chevrolet Big Car, '72 Charger '69 Oldsmobile 88, '72 Chrysler The new 9.3-inch provided outstanding durability when subjected to abuse from all classes of race cars, including Top Fuel. GU2 - 2.73's Standard auto trans gear ratio. For a better experience, please enable JavaScript in your browser before proceeding. list of rear ends and their dimensions to help narrow the search for a possible Snap On vs Daytona, Pittsburgh, ESCO, Husky, More. Re: Rear end interchangability 1965 to 1967 IMPAL. Prices and availability are subject I'm not sure of the Task Force width ranges at this time. 1957-58 are 29-spline and 1959-1964 are 31 spline. GU6 - 3.42's Standard manual trans gear ratio. 0000005198 00000 n Vehicle. some Chevy's Dana 44 or Dana 60 with leaf springs 6 lug, Gear ratio's 1956 and back have 10-spline axles. By designing ring-and-pinion sets to fit the previously less-attractive, but more available, Series II OE carriers, performance ratios could now be utilized without the need for an unfavorable ring-gear spacer. with 10 bolt axle. '74 Valiant, '57 Ford '71 Comet , '71- 72 Pinto, '39 -48 Chevrolet, '68 GTO some sources state that the 67 and latter are wider. Maverick 5 Lug 8", 49-51 Ford, 57-59 Ford 9", 58" 78-88 Mid Once the wheels and axle was centered under the car I was able to raise and lower the wheels with my floor jack to check for clearance at different ride height and suspension travel. 0000002038 00000 n Plywood pieces work well for shims. I'm sorry if I repeated what I've learned to accept as fact, but there are other reasons besides what I've read that have convinced me that '64/'65 housings are narrower than the '66/'67. xb```"~> !%1#XY} P A1@G7L/^nkX,i{j^vL@l ` n Part Number: YGA-21289. Quality and service was excellent. %twE_( H@v7H f)p* 0KO|O n>+ All housings have strong, tapered axle tubes, come in numerous widths, and sport a variety of suspension brackets. We'll work to keep you motivated and informed and with industry news, product information and reviews, event coverage, and well-curated articles and stories intended to inspire and educate. A turbocharger was added to the 301 to give the 1980 Trans Am an injection of performance. The End of an Era. . 18 21 Post: rear end width chart (Topic#173541) greg pharr Contributor Posts: 897 Loc: North Mississippi Reg: 07-09-03. Underneath the back end of an overwhelming majority of gassers was a 1957-'64 Pontiac/Oldsmobile 9.3-inch differential. During the production run a third-generation gear case was introduced, oddly enough with slightly smaller pinion bearings, which was probably a cost-cutting move. '62 Buick Skylark, '67 Chevrolet Six 5E med-duty 4-pinion. Chrome 10 Bolt Rear End Cover Fits Chevy Pontiac Oldsmobile10 Bolt Differential Because OE components were still widely used in racing circles, the 9-inch gained traction as a viable alternative, superior to the newer, cheapened, integral-style axles using C-clips and flimsy internals. Vintage 1980 Yamaha Enticer Snowmobile Revival to Former Glory. 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. According to an old article, Inside '64 -- '72 A-Bodies, (Car Craft Magazine), 1967 was a transition year in that A-body cars might have a 1964-66 style rear end, a 1968-72 rear end (which is wider, and commonly available), or a "hybrid" rear end, which will have the 60.5-inch width, but with the early spring mounting pad and trailing arm . My '64's measure 54.25". Its pretty easy to find a good one if you are in an area with a few junkyards. '70 Nova Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass. 62" 64-77 Chevelle, 73-76 Torino, 89 Trans Am. Rey Payumo of Kailua, Hawaii found this 1963 Chevrolet Impala packed with junk in a garage in Hayward, California. . Compared side-by-side with the Chrysler, it boasted stronger gears and larger bearings. What is the width of a 1959 pontiac rear end? Axle Shaft, Rear, 1541H Alloy, 28 Spline, 29.875 in. Estimated Lead Time: 5-Days. So why did the Ford 9-inch become the premier differential of modern day hot rodding? What I did is shown below in the photos. 57" 71-74 V-8 Mavericks 8", All '75-77 6's & 8's Maverick 5 Lug 8", 49-51 Ford, 57-59 Ford 9", 58" 78-88 Mid sized GM Car, Malibu/Monte Carlo (82 up Metric Studs), 80 Granada & Lincoln Versailles, 67-70 Mustang/Cougar/Fairlane, Regal with 10 bolt axle, S-10 P.U., 65-67 Nova, 60" 55-64 Chevy Car, 67-69 Camaro, 64-67 Chevelle, 68-74 Nova, 71-73 Mustang/Cougar, 84-95 Corvette, 60-61" 64-69 1/2 ton 2wd Chevy/ Some GMC 6 lug rear end 12 bolt Coil spring set up Possible gear ratio's 3.70. June 5, 2022 Posted by: Category: Uncategorized The GM 8.2" axle is available in two configurations: The standard GM 8.2" version features an 8.2" diameter ring gear with 28 spline axle shafts that are held in place using c-clips. 18 0 obj<> endobj Needle BUILD IT YOURSELF - PARTS LISTS BUSHINGS TO ADAPT TUBE SIZE . Car, 67-69 Camaro, 64-67 Chevelle, Is a pontiac center section as olds rear ends of that era? GU3 - 3.08's V6 gear ratio. 0000012085 00000 n Q: Why do Pontiac/Olds 9.3 parts cost more than those for a Ford 9-inch? 1985 to 1989: 7.625 inch ring gear, 26 spline axle. GMC V-6 used a 3.21 Dana 44 used a standard chevy 1310 yoke, Dana 60 used the heavy duty yoke which takes the larger 1350 yoke. Find your GMC/Chevy vehicle in the chart below and click on the illustration for a larger view. Actual wheel track could be as much as 6" to 8"depending on drum size: '67 to '70 Mustang/Cougar 6 cyl. They're tough, right? I came up with a cheap simple method to confirm the results of the measurement taken with the loose wheels. Please select a rear end that matches your vehicle below.General Motors has a wide range of front and rear ends! All Pontiac Firebird 2nd-gen. Trans Am Coupe versions offered for the year 1977 with complete specs, performance and technical data in the catalogue of cars . 20 0 obj<>stream For many years prior, Olds and Pontiac differentials had been a dominant rear axle in drag racing and other motorsports. 0000001291 00000 n 0000000716 00000 n The renewed interest in the P/O 9.3-inch generated high demand for any limited-slip units that were left. . Chrysler sent out the last of its 8.75-inch rearends in the early '70s. '67 Lincoln, '69 Dodge In head/2 per cylinder. Dec 20, 2007. The following tags will show a 4L80E transmission as an example. 70 2wd 6 lug rear end 12 bolt Possible gear ratio's Factory Width. I've heard 'prolly torque-tube' from most that I've asked My friend's stock '41 Pontiac is open drive, so I would imagine that the '50 is as well. Like most american muscle cars of the Day the Pontiac GTO was a front engined rear wheel driven car. Mickey Thompson even produced aftermarket Olds and Pontiac magnesium gear cases that were frequently used in dragsters. Rusty but Rare 1976 Chevy K10 Sport Truck Revival! 0000002277 00000 n Product By Category; Products By SKU/ID; . That being said, if you have at least 2" of clearance (and preferably more) between your stock tire/wheel combo and the frame or exhaust pipe, whichever is closest to the tire, then a 56" rear end width could possibly fit. The 301 was Pontiac's only V-8 left in production by 1979. There is also a yellow stamp 10 22 which is the . Will only work with bolt in style axles. the versailles / granada rear ends from flange to flange is 58.5". J.T. The early Nova's 62-67 would be about 2" shorter. 71-76 Full Size Cars " 0 There is no point in mocking up the wheels to a width that in not commercially available or one that was never provided by the OEMs unless you are planning on spending a lot more money on a custom width housing and axles. '70 Duster '66-67 Chevrolet Big Car, '72 Charger Jeremy. charles coker, 1953 pontiac tech advisor. Terms '69 Javelin Six, '39 -48 Chevrolet Your differential is the set of gears that allows your vehicles driven wheels to revolve at different speeds by splitting your engine torque in two directions, An Online Magazine for DIY Hot Rod Builders. 0000007740 00000 n It may not display this or other websites correctly. According to published lists, the 55-64 Chevrolet rear end width is 60" from wheel mount surface to wheel mount surface. @`AWG^8J>4j|^Vk@oXq7@@/9ep Picture is from parts book. Correct two piece design posi unit, exact for only 67 - 69 Firebird 10 bolt 8.2 rears. 66-69 axle does not include 64 65 . For a variety of reasons, not the least of which is the current Gasser craze, Pontiac and Olds rearends are enjoying renewed popularity. Model. JavaScript is disabled. <<3d7f7a4e8421a74f9b85ec848848f3a1>]>> . '72 Cougar, '74 Pontiac '49 Plymouth, '61 Chevrolet Impala '65 Cadillac, '66 Buick Wildcat '66-67 Chevrolet Big Car, '72 Charger The 8.2" BOP (Buick, Oldsmobile, Pontiac) model is slightly different in that it uses pressed on axle bearings and instead of c-clips . 0000003369 00000 n PY Online Forums - Bringing the Pontiac Hobby Together, Classic TECH- specs, codes, resto issues FORUMS. Demand exceeded supply, so after several years of planning, designing, and prototyping, Fabcraft Metalworks teamed up with a major U.S. manufacturer to produce a brand new, extreme-duty limited-slip differential for the 9.3-inch called the Trophy Track. 0000000911 00000 n endstream endobj 29 0 obj<>stream Very hard to find set, being as this is version is not being reproduced. 0000002353 00000 n Chevy 10 Bolt Rear End Widths. My rear is the bolt in axles. Accurate Differential Identification is the first and most important step in your differential repair, upgrade or overhaul project. Billet-steel yokes and carrier caps could be added to make the 9.3-inch nearly bomb-proof. 100 x 4.12. My 69 gto convert., purchased within the last year has a painful 2.56 rear gear. 1958-1970 Chevy Rear Differential code Identification : Using the charts below, you will be able to learn alot about the rear differential in your classic full size Chevy. Valves. cars 6" - 8" for large cars, '71 Colt These rearends were the Hotchkiss style, which means the ring-and-pinion gears, along with the differential components, are housed in a removable carrier, making gear changes and axle replacement quick and easy. This reduced weight and eliminated the stock suspension, producing a spacious engine bay that eagerly accepted the chosen powerplant. This method will work but the wheels are always trying to roll away and tip over making it very hard to check for clearance and be sure that your measurements are correct . The Olds and Pontiac both used the same center section. Fits 41-52 Olds, 50-55 Pontiac : 1310 to 1330: MORE INFO: 3.219 x 1.062: Outside Snap Rings: Converts To: 3.625 x 1.062: Outside Snap Rings : '72 Chrysler. Dont Be That Guy, Reversing Gears ~ Rescuing Ones Own Derelict 1967 Pontiac GTO, How To Paint a Lace Roof on the Cheap Using Grandmas Curtains, Exploring an Antique Junkyard in the Hills of West Virginia, Engine, Transmission, Chassis Swap Donor Vehicle Look-Up, Early Ford Beam Axle Identification and Dimensions, How To Box-In a Differential / Solid Axle Rear-End Housing, How To Install aLimited Slip/Posi Unit in a GM 10 Bolt 8.5 Rear-end, How To Install Ring and Pinion Gears in a Ford 8.8 Rear-End, How To Rebuild a GM 10 Bolt Chevy 8.5 Rear End, How To Select Proper Rear-End / Differential Gear Ratio, Popular Automatic Transmission Dimensions, Popular Automatic Transmission Identification Chart, Engine / Transmission / Chassis Donor Search, Project Cars and Part Donor Cars For Sale. The1971-'72 Buick GS/Skylark and Olds Cutlass A-body 8.5 10 bolt did not have C-clip axles. Drag Racing 101 ~ Everything You Need to Know! It is a little better than the Camaro 8.2 10 bolt. '72-75 Datsun Pickup $5 Off Your $100 Mobile App Purchase . Shop Full Width; Shop With Sidebar; . xref manufactured by Pontiac in United States. In the '50s and '60s the search for high-performance parts usually meant a trip to the wrecking yard to rob components, engines, out of big, powerful cars of the dayChryslers, Fords, Cadillacs, Olds, Pontiacs, and W-Chevys were all used. Axle Images: Axle Details. Floor jack permits you to raise and lower wheels to check for clearance. But it's been so long I can't be certain. Terms of Service. Rear End Widths - - Back - - Home > Specs > Rear End Widths : Representative for comparison purposes only. lx ?ZXj^|\\(|ka(XKIg#+ 3.21 to 3.92. The current axle needs to be measured to verify width, because it plays an important part in determining what rim backspacing is necessary. Ironically the heavy-duty nature of the 9.3 worked against it and played a part in its demise. '72 Charger Pontiac labeled theirs Safe-T-Trac while Oldsmobile called it Anti-Slip. I used 5 long lag bolts to hold the end pieces of wood on which permitted me to add up to 1.5 of shims to each end. '72 Cougar Thanks to the efforts of the Fabcraft Metalworks crew all the parts necessary to rebuild one are available along with a selection of improved components and special tools to make working on them easier. 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. note 64 64 axle is same. Rear Suspension Width (Flange to Flange), Donor Vehicles Front and Rear ?|-Zce14^nF%67( }fSRaQfqX?|{8{>? VX5EX=b :"-'k>.VbyV^-nWxv-WgUtpo>sMhlI4ZV<4+s>|2k>\x{7M^^x. I placed the order with Speedway motors in late July for my rear end housing and Currie axles. The T/A 6.6 was available for most of the model year, but once the supply of stockpiled 400s was exhausted, it signaled the end of the big Pontiac V-8. 1958-1970 Full size Chevy rear differential identification chart. A: Starting in 1937 Pontiac and Oldsmobile rearend designs slowly began to converge, to the point that in 1957 all major components were virtually interchangeable, with the exception of some brake components, suspension attachments, and axle housing/axle widths. '55 -57 Chevrolet, 68-69 Fair lane 6 or 8 While it still may take an investment in time to locate a good third-member core and housing for your gasser project, these components are still relatively plentiful and quite affordable. Add Width to compensate for drums as follows: 4" - 5" for small cars 5" - 6" for intermediate cars 6" - 8" for large cars . I just measured my 60' Pontiac and it is the same as my 62' Pontiac. 5D med-duty 4-pinion. And yet, all too often, a beautiful gasser built today is sitting on top of a Ford 9-inch axle. Pontiacs had 1.75-inch-wide drums in 1957-58 while Olds used 2-inch from 1959-on, both used 2-inch brakes. On early street rods it wasn't unusual for the rear of the car to be jacked up so wider than stock tires could protrude several inches past the fenders, but then styles changed and the need for a narrower rearend that was reasonably strong led many hot rodders to the '57 Ford 9-inch, particularly those under wagons and Rancheros as they were the narrowest. candidate to replace the torque tube rear end or just get a better set of gears Both of these are semi-floating axles. Other changes were made to the limited-slip carrier, but strength was not adversely affected. But the components should at least be grounded in the era. Some of the most frequently asked questions regarding the Pontiac/Oldsmobile 9.3-inch rearend: A: Fabcraft Metalworks provides virtually every component for the Pontiac/Oldsmobile 9.3-inch rearend. This ratio is 3.08, perfect for cruisin. Automotive Technical and Reference Information, Project Cars, Trucks and Salvage Vehicles For Sale. 41/14. pontiac rear end width chart . AXLE DIFF 4X4 FRONT DIFF PARTS AXLE DIFF REAR END PARTS . GU5 - 3.23's Optional auto trans gear ratio. '67 Mustang V-8, '69 Firebird Check here to see if your engine is correct for your year truck. However, the 9.3-inch differential was saved from obsolescence by a Texas-based company called Fabcraft Metalworks and its owner, Brad Duerst. '69 Cougar, '71 -73 Nova '72 Cougar, '74 Pontiac '49 Plymouth, '61 Chevrolet Impala '65 Cadillac, '66 Buick Wildcat '66-67 Chevrolet Big Car, '72 Charger
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