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The following information is provided to help you identify the differential you are working on. The simple cure when using wide tires with a stock-width rearend was to radius the fenders and let the tires hang out in the breeze. . startxref 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. Re: Rear end interchangability 1965 to 1967 IMPAL. The correct width for 59' & 60' is 63-1/4" I believe. '70 Nova You must log in or register to reply here. Buick/Olds/Pontiac axles are typically retained with bearings. Is a pontiac center section as olds rear ends of that era? Chrome 10 Bolt Rear End Cover Fits Chevy Pontiac Oldsmobile10 Bolt Differential Once I had the wooden rear end made I attached the wheels to the small wood axle flanges with wood screws and large washers to stop the screws from pulling through the lug nut holes. Snap On vs Daytona, Pittsburgh, ESCO, Husky, More. GM quit making the 9.3-inch in 1964. Fabcraft can also supply an excellent manual that tells you everything you need to know about these rearends, along with instructions on overhauling them, or they'll refurbish a rearend for you. User Info. Many aftermarket options exist with all of the appropriate mount points. . sized GM Car, Malibu/Monte Carlo (82 up Metric Studs), 80 Granada & I cut two axle flanges from a couple of short pieces of wood and then used 3/8 lag bolts to attach them to the longer center portion of the rear axle. RWD (rear-wheel drive), automatic 4-speed gearbox. Billet-steel yokes and carrier caps could be added to make the 9.3-inch nearly bomb-proof. Once I had determined the desired width with the loose wheels and tape measure I constructed a wood rear end out of a 2x4. We carry everything from the 7.25" IFS front end parts, to the large 11.5" rear end parts for 1-ton trucks.We make it easy to verify your exact rear end by providing specs and year, make, and model applications for . Other changes were made to the limited-slip carrier, but strength was not adversely affected. '74 Valiant, '57 Ford The 8.2" BOP (Buick, Oldsmobile, Pontiac) model is slightly different in that it uses pressed on axle bearings and instead of c-clips . Yes the axles were special in that I wanted to use a 28 spline center section already had rather than buy a new 3rd member to suit the 31 spline axles that Speedway stocked. var u='http://50chevy.freeservers.com/cgi-bin/sitestats.gif?p='+escape(location.href)+';r='+escape(document.referrer)+';t='+t.getTime(); Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass. Someone may correct me, but as I recall 1959 was the first year for the "Wide Track" Pontiac. It is a little better than the Camaro 8.2 10 bolt. endstream endobj 29 0 obj<>stream Approximate rear end widths measured from backing Like most american muscle cars of the Day the Pontiac GTO was a front engined rear wheel driven car. '69 Cougar, '71 -73 Nova 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. 0000015097 00000 n 62" 64-77 Chevelle, 73-76 Torino, 89 Contributing information were Bob Welch, J The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. If you're building a period-correct car, especially a Gasser, they are undoubtedly the perfect rearend for today. Its role in drag racing was limited to primarily Stock, Super Stock, and Factory Experimental Fords. 0000004229 00000 n Underneath the back end of an overwhelming majority of gassers was a 1957-'64 Pontiac/Oldsmobile 9.3-inch differential. 70 2wd 6 lug rear end 12 bolt Possible gear ratio's What is the width of a 1959 pontiac rear end? Drag Racing 101 ~ Everything You Need to Know! The Olds and Pontiac both used the same center section. In their day Pontiac and Olds rearends had a well-deserved reputation for toughness and reliability, that's why they were found under so many hot rods on the dragstrip and the street. These smaller volumes and domestic content result in slightly higher prices. GU3 - 3.08's V6 gear ratio. Housings with leaf springs were used under Pontiac and Olds in 1957 and Olds only in 1958-60; Pontiacs had coil . 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. 0000002353 00000 n The new P/O 9.3-inch immediately found its way into hot rods and race cars. Quality and service was excellent. 5" for small cars 5" - 6" for intermediate 66-69 axle does not include 64 65 . Items So what we are left with is this: A fully capable, period-correct, brute of a differential with complete aftermarket support. . 1940 engine numbers run 2697268 through 3665902. I have heard that a 1st gen Pontiac Firebird rear is wider, but I am not sure by how much. '67 Chevrolet big car Many Ford 9-inch parts are made offshore; they have smaller bearings and smaller diameter gears requiring less material. I would like most people place the wheels and tires under the car and use a tape measure to determine the distance from wheel flange to wheel flange. '72-73 Mazda, '28-40 Ford , '57 - 59 Ford Automotive Technical and Reference Information, Project Cars, Trucks and Salvage Vehicles For Sale. But it's been so long I can't be certain. If you noticed the axles are missing you would be correct. July 30, 2004 11:23PM. 455 ho only(c-type axle) 12 bolt 1970 3.36 cok col fb 1970 3.55 cow cox fb 1970 3.55 wv xv gto 455 ho only(c-type axle) 12 . For 1966-1970 Plymouth and Dodge B-bodies there were three basic rear end assemblies that were available: the 8, the 8, and the 9 Dana 60. . . . Q: Why do Pontiac/Olds 9.3 parts cost more than those for a Ford 9-inch? Additionally, it can be a relatively affordable way to enjoy a day at the track. I did a quick google search for 65 impala rear end, and 65-66 impala rear end came up a lot. Part Number: YGA-21289. Six-cylinder truck engine block and head casting numbers. '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 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. In this 489 case it is 3:91 gears and a 1 7/8 pinion. I believe the width, outside axle flange to outside axle flange, is 64 inches. Detroit gear & axle : AB : 3.36 : No : Powerglide : Detroit gear & axle : AC : 4.11 : No : 3 speed, O.D . '69 Firebird GM 10-bolt rear ends have four basic ratio choices: 2.73, 3.08, 3.42, and 3.73 . The following tags will show a 4L80E transmission as an example. 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. Your Nova should be the same as 67-69. 1969. Mickey Thompson even produced aftermarket Olds and Pontiac magnesium gear cases that were frequently used in dragsters. lx ?ZXj^|\\(|ka(XKIg#+ * Pinion #s GM 40 13 == 67 K D. compensate for drums as follows: 4" - 66-69 axle does not include 64 65 . 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. "Stovebolt" Specifications. 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. 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 : 0000006068 00000 n As a result, many tribute cars and gasser-inspired builds had to stray from correctness. Add Width to compensate for drums as follows: 4" - 5" for small cars 5" - 6" for intermediate cars 6" - 8" for large cars . hi don, there is no major difference in the pontiac differential from 1949 to 1956 other than rear brake related parts. 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 ; . Picture is from parts book. may be different than pictured. L = Low - Zero to Negative Offset, Offset typically RWD (Rear . 0000008567 00000 n Rear End Widths - - Back - - Home > Specs > Rear End Widths : Representative for comparison purposes only. The current axle needs to be measured to verify width, because it plays an important part in determining what rim backspacing is necessary. The 1967 Firebird has the particularity to have a rear axle held by arms while in 1968 rear axle was hold only by the blades/spring of suspensions. 0000007740 00000 n 0000000911 00000 n candidate to replace the torque tube rear end or just get a better set of gears The 8.5-inch 10-bolt rearends have ten 3/4-inch hex head bolts with 7/16-20-inch left-hand thread bolts that hold the ring gear to the carrier. GU6 - 3.42's Standard manual trans gear ratio. If you would like to compare the fit with a couple of different widths build your wooden rear end for the narrower width and then add shims to the ends to change the width. A turbocharger was added to the 301 to give the 1980 Trans Am an injection of performance. Compared to the Ford, the P/O parts were more expensive. The later rear axle requires a wheel with between 5" and 5-1/4" of backspacing, while the earlier axles will only need a wheel with 4-1/2" to 4-3/4" backspacing. plate to backing plate. For the do-it-yourselfer, Fabcraft offers a full-color manual with excellent tech info on the differential. 1956 and back have 10-spline axles. 5D med-duty 4-pinion. Is a pontiac center section as olds rear ends of that era? '64 1/2-'65 Mustang Drag Racing 101 ~ Everything You Need to Know! Because the Borg-Warner axles were no longer being used for the G92 option, optional axle ratios changed slightly: LB9 305 TPI 5 speed went from 3.45 (1989) to 3.42 (1990) and the B2L 350 TPI went from 3.27 (1989) to 3.23 (1990). Buy in monthly payments with Affirm on orders over $50. 1985 to 1989: 7.625 inch ring gear, 26 spline axle. The 10-bolt was used in all the low performance applications. '71 Comet , '71- 72 Pinto, '39 -48 Chevrolet, '68 GTO Willwood Engineering. pontiac rear end width chart. (painful to me while driving) I am pretty sure that it is the standard BOP 8.2, 10 bolt. 20 0 obj<>stream Thanks to the efforts of the Fabcraft Metalworks crew all the parts necessary to rebuild one are available along with a selection of improved components and special tools to make working on them easier. You're building a gasser. I actually had the axles in less than 4 days! GMC V-6 All but a few of the old factory limited-slips had been gathered up and beaten to death. but the body with is 1" wider on 66-67. I'm running the wider blazer rear end . Dec 20, 2007. You can do this by multiplying by the gear ratio. In the '50s and '60s the search for high-performance parts usually meant a trip to the wrecking yard to rob components, engines, out of big, powerful cars of the dayChryslers, Fords, Cadillacs, Olds, Pontiacs, and W-Chevys were all used. My 69 gto convert., purchased within the last year has a painful 2.56 rear gear. to change without notice. The 1965 Pontiac Tempest LeMans measures 74.40 inches in width, The 1965 Pontiac Tempest LeMans measures 206.20 inches in length, and has a wheelbase of 115.00 inches. The 301 was Pontiac's only V-8 left in production by 1979. Pontiac/Olds rearends had been widely used full width under Gassers and other cars and even though lots of slingshot dragster pilots had their legs draped over a narrowed version, custom-width rearends were seldom seen in other applications and almost never under a street car. Rusty but Rare 1976 Chevy K10 Sport Truck Revival! CK 15/35, S10, RV. The T/A 6.6 was available for most of the model year, but once the supply of stockpiled 400s was exhausted, it signaled the end of the big Pontiac V-8. HVMo0WJ~H|V`-e)6`!$)=-~6x@h1|o wagon pontiac plant 1975 2.73 ua va b sedan 1975 2.73 ya za b wagon 1975 2.73 pa pu f 1975 2.73 wl xl g . . Outside Width: Year: Model: 56.50: 1969-1977: Maverick 8" 56.50: 1990-1992: Ford Ranger 8.8" 56.75: 1995-2003: Ford Explorer 8.8" Narrowed w/2 short side axles: 57.00: 1974-1978: Mustang II 8" 57.25: 1957-1959: Ford, Ranchero . 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. 18 21 A period gasser can be built by scrounging swap meets, salvage yards, and the Internet for many of the components necessary to complete a genuine example of one of the dominant race cars from the 1950s, '60s and '70s. Ford. There have been non C-clip rearends found in Chevelle wagons, and some El Caminos through at least 1974. 6>"FlJz^l,*4&V0afw .a@z"PXdj}o`2/ OQs=`&qf aDK|/U32.)0i%q~P"BaLw.Y@`uwy#Do~vt*o~@$y-KZe]X3q'WWb2y)0`61"4@Q*`6k RPf\`H#@ ^M8-|&YxO-t The final drive ratio is identified with 2 or 3 letters codes. while a folding bench was standard for the rear passengers. 57" 71-74 V-8 Factory Width. Mopar Rear Axle. Originally posted by SUNNYD @Mar 22 2007, 10:23 PM~7534589. note 64 64 axle is same. Shop Full Width; Shop With Sidebar; . 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. Suspension Width (Flange to Flange), Ford Mustang II/Pinto & 2D reg-duty / 4D med-duty 4-pinion. of extensive information was contributed by R. Welch: Original Vehicles The Rochester Quadrajet carburetor was featured on the top spec GTO. Engine Numbers. '68 AMX 59" 68-83 Corvette , 67-70 Mustang/Cougar/Fairlane, 60" 55-64 Chevy '69 Javelin Six, '39 -48 Chevrolet 1982 to 1984: 7.5 inch ring gear, 26 spline axle. 71- Newer 2wd trucks use a 5 on 5 lug pattern 60" 60's GMC and Floor jack permits you to raise and lower wheels to check for clearance. %PDF-1.4 % 0000012085 00000 n The following is a general list of rear ends and their dimensions to help narrow the search for a possible candidate to replace the torque tube rear end or just get a better set of gears for highway driving. Pontiacs had 1.75-inch-wide drums in 1957-58 while Olds used 2-inch from 1959-on, both used 2-inch brakes. 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Product By Category; Products By SKU/ID; . The pinion shaft diameter is 1.625 inches and will have either 28 or 30 splines. with 10 bolt axle, "A" body 3.21 to 3.92. PY Online Forums - Bringing the Pontiac Hobby Together, Classic TECH- specs, codes, resto issues FORUMS. This 1955 Chevrolet 3100 Step Side Pickup Truck was built by the Hot Rod Factory, Minnesotas premier hot rod shop and muscle car restoration facility. The non C-clip 8.5" 10 bolt, type "C" rearend was used in some 1969-'72 Pontiac GP and 1970-'72 Monte Carlo. GU2 - 2.73's Standard auto trans gear ratio. )EgZ(WLlT!c!r~;+{( BRnpX{n>S;;5q N`+UHWF*FA6*BKm)JBw Outside of flange to outside 54.25" 66 up are wider. i've seen that link about a hundred times now and it's kind of funny how the 73-77 GM A-body is not included. Prices and availability are subject xb```"~> !%1#XY} P A1@G7L/^nkX,i{j^vL@l ` n A solid front axle was found under the front of nearly every gasser. However, the 9.3-inch differential was saved from obsolescence by a Texas-based company called Fabcraft Metalworks and its owner, Brad Duerst. Terms 1/4 Mile : 13.1 seconds. This number may be on the top, bottom, or either side of the axle shaft. The Firebird rear end would have been a BOP 8.2 10 bolt. Rim Width Measure from the inside of the outer lip at the bead seating point to the inner lip. 70-81 4wd 6 lug reared Vehicle. Grand Prix. NFTs Simplified > Uncategorized > pontiac rear end width chart. 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. Contributing information were Bob Welch, J Forbes and various locations throughout the Web and Automotive Magazines. Terms of Service. GU5 - 3.23's Optional auto trans gear ratio. '69 Nova Axle Images: Axle Details. Model. '72-75 Datsun Pickup & Conditions, Ford Mustang II/Pinto & Mercury Capri/Bobcat, Monte Carlo, Regal, etc. With a maximum top speed of 112 mph (180 km/h), a curb weight of 2672 lbs (1212 kgs), the Fiero GT has a naturally-aspirated V 6 cylinder engine, Petrol motor. The following list the versailles / granada rear ends from flange to flange is 58.5". var I=new Image(1,1); I.src=u; Rear Suspension Width (Flange to Flange), Donor Vehicles Front and Rear For instance, if both the engine and transmission deliver up to 100 ft./lbs. 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. For a variety of reasons, not the least of which is the current Gasser craze, Pontiac and Olds rearends are enjoying renewed popularity. for highway driving. 0000003369 00000 n Very hard to find set, being as this is version is not being reproduced. i know in 1956 the pontiac dual range hydra-matic got a different driveshaft yoke. Wilwood Engineering designs and manufactures high-performance disc brake systems. ends with widths ranging from 58"- 62". Displays PONTIAC bolt patterns, wheel sizes and dimensions by model or view all matching vehicles that will swap or interchange with PONTIAC wheels. Automotive Technical and Reference Information, Project Cars, Trucks and Salvage Vehicles For Sale. '69 Oldsmobile 88, '72 Chrysler Look at the RPO codes. B. @`AWG^8J>4j|^Vk@oXq7@@/9ep xref How To Box-In a Differential / Solid Axle Rear-End Housing; . '67 Mustang V-8, '69 Firebird I'm not sure of the Task Force width ranges at this time. '67 Chevrolet Six Correct two piece design posi unit, exact for only 67 - 69 Firebird 10 bolt 8.2 rears. %%EOF In head/2 per cylinder. var t=new Date(); In 1957, the Pontiac and Oldsmobile designs were combined and improved upon, producing a brand new 9.3-inch differential. To say I was disappointed by the service provided by this company would be an understatement. jack39rdstr # 169783 04/02/10 02:03 PM. '71 - 72 Pinto 3:08, 3:40, 3:73 This ratio is 3.08, perfect for cruisin. Both of these are semi-floating axles. The new 9.3-inch provided outstanding durability when subjected to abuse from all classes of race cars, including Top Fuel. %twE_( H@v7H f)p* 0KO|O n>+ '72 Dart This assembly used an 8.2-inch ring gear diameter and 28-spline axles for Camaros, Chevelles, Impalas and even the early Chevy II's. 3.08. So why did the Ford 9-inch become the premier differential of modern day hot rodding? The total width of the Chevy II rear end is 58 inches and the total width of a '67 to '69 Camaro rear end is 60 inches.