of extensive information was contributed by R. Welch: Original Vehicles It has an M-21 four speed and I am ready to upgrade the rear diff. 62" 64-77 Chevelle, 73-76 Torino, 89 Trans Am. 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. '72 Cougar, '74 Pontiac '49 Plymouth, '61 Chevrolet Impala '65 Cadillac, '66 Buick Wildcat '66-67 Chevrolet Big Car, '72 Charger & Conditions, Ford Mustang II/Pinto & Mercury Capri/Bobcat, Monte Carlo, Regal, etc. Maverick 5 Lug 8", 49-51 Ford, 57-59 Ford 9", 58" 78-88 Mid Its role in drag racing was limited to primarily Stock, Super Stock, and Factory Experimental Fords. 70 2wd 6 lug rear end 12 bolt Possible gear ratio's 3:08, 3:40, 3:73 70-81 4wd 6 lug reared 71- Newer 2wd trucks use a 5 on 5 lug pattern 71-76 Full Size Cars " "" "" ". Under the hood, Pontiac installed a 2.5 . Ford Mustang Complete 9" Rear End Packages, GM G-body 78-87 Complete 9" Rear End Package, GM Chevy S10 82-04 Complete 9" Rear End Package, GM Tri 5 55-57 Chevy Complete 9" Rear End Package, GM X-Body Nova Complete Rear End Packages, Axle Bearings, Retainer Plates, & Wheel Studs, Bearings, Differential Parts, Seals, & Hardware, Master Cylinders, Caliper Kits, and Parts. 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. If it has the original Borg Warner posi then it is stronger than the Chevy 10 bolt. Rusty but Rare 1976 Chevy K10 Sport Truck Revival! <<3d7f7a4e8421a74f9b85ec848848f3a1>]>> As the popularity of the Ford 9-inch increased the P/O 9.3 began to fade from the scene. Wilwood Engineering designs and manufactures high-performance disc brake systems. "SPECIAL" CARS - 1938 Pontiac Special six. My '64's measure 54.25". SiteStats_3379(); Building a gasser is a satisfying way to blast down the track, turn some heads, and salute the good old days of racing. The following information is provided to help you identify the differential you are working on. By 1965 GM replaced the 9.3 with a Spicer design using an 8.875-diameter ring gear that mounted the internals in the axle housing rather than a separate carrier. According to published lists, the 55-64 Chevrolet rear end width is 60" from wheel mount surface to wheel mount surface. Trans Am. 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 . '70 Duster Other changes were made to the limited-slip carrier, but strength was not adversely affected. The S10 10bolt 7.5/7.625" rear end is a good choice for the light low to medium horsepower small block cars. may be different than pictured. Additionally, it can be a relatively affordable way to enjoy a day at the track. The current axle needs to be measured to verify width, because it plays an important part in determining what rim backspacing is necessary. . Mavericks 8", All '75-77 6's & 8's 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. (rear-wheel drive), automatic 3-speed gearbox . '67 Mustang Six , '68 AMX 2D reg-duty / 4D med-duty 4-pinion. some sources state that the 67 and latter are wider. GM 7.75" (Australian - Some 3rd Gen Camaro/Firebirds) GM 8.0" - Rear - Late Model Midsize Truck Ring Gear Diameter: 7.75" Ring Gear Diameter: 8.0" Pinion Diameter / Spline: 27 Pinion Diameter / Spline: 1.781" / 27 Ring Gear Bolts: (8) Ring Gear Bolts: (10) 7/16"x20 LH Cover Bolts: 9 Cover Bolts: 10 Carrier Breaks: 2.77 / 3.27 Carrier Breaks: None 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. The '70 to '81 Camaro rear end is 61 inches. with 10 bolt axle. Floor jack permits you to raise and lower wheels to check for clearance. 1958-1970 Full size Chevy rear differential identification chart. Valves. } Wilwood Engineering, Inc. - 4700 Calle Bolero - Camarillo, CA 93012 - (805) 388-1188. Add Width to compensate for drums as follows: 4" - 5" for small cars 5" - 6" for intermediate cars 6" - 8" for large cars, STOCK CENTER TO CENTER SPRING PERCH DISTANCE, Original VehiclesRear Suspension Width (Flange to Flange), Donor Vehicles Front and RearSuspension Width (Flange to Flange), Items Add Width to Cylinders. '72-75 Datsun Pickup 3:08, 3:40, 3:73 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. Mercury Capri/Bobcat, Monte Carlo, Regal, etc. But the components should at least be grounded in the era. '70 Dodge, '71-77 Maverick 70-81 4wd 6 lug reared '69 Dodge Van, '71 Torino 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 . HVMo0WJ~H|V`-e)6`!$)=-~6x@h1|o Wheel- Size.com The world's largest wheel fitment database. '64 1/2-'65 Mustang Look at the RPO codes. A: They came in all fullsize Pontiacs and Oldsmobiles from 1957-64. 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. pontiac rear end decoder year ratio open posi model notes: . 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. 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. They are also easily modified to suit any chassis. With perhaps less than 10 percent of Pontiac and Oldsmobile fullsize cars possessing the Safe-T-Track and Anti-Spin options, prices for unmolested examples remained high. Compared side-by-side with the Chrysler, it boasted stronger gears and larger bearings. Very hard to find set, being as this is version is not being reproduced. Is a pontiac center section as olds rear ends of that era? ). 71-76 Full Size Cars " Buick/Olds/Pontiac axles are typically retained with bearings. The early Nova's 62-67 would be about 2" shorter. Advance Design Trucks seem to be using rear ends with widths ranging from 58"- 62". They were robust, drop-out-style third members that offered the strength and serviceability racers required. 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. 20 0 obj<>stream Vehicles with Similar . The 1967 GTO came in 3 speed Automatic and a 4 Speed manual. Drag Racing 101 ~ Everything You Need to Know! 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. . The P/O rearend and parts were getting harder to find and there were more Ford 9-inchers being made every day. Accurate Differential Identification is the first and most important step in your differential repair, upgrade or overhaul project. Correct two piece design posi unit, exact for only 67 - 69 Firebird 10 bolt 8.2 rears. '73 Ventura, '65 Ram American GMC V-6 to change without notice. with 10 bolt axle, "A" body Please select a rear end that matches your vehicle below.General Motors has a wide range of front and rear ends! Fabcraft also offered complete components for the differential, including all necessary bearings, seals, shims, limited-slip clutches, solid spacers, and crush sleeves, as well as beautifully refurbished OE parts. '67 Mustang V-8, '69 Firebird You can do this by multiplying by the gear ratio. //-->. Your Nova should be the same as 67-69. 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. 6 lug rear end 12 bolt Coil spring set up Possible gear ratio's 3.70. May 7, 2009. . xb```"~> !%1#XY} P A1@G7L/^nkX,i{j^vL@l ` n So why did the Ford 9-inch become the premier differential of modern day hot rodding? The Borg-Warner HD rear end was dropped and replaced with the old 7.625 (7 5/8) inch rear end. 1/4 Mile : 13.1 seconds. I'm running the wider blazer rear end . %%EOF Here you can see the three white paint splotches identifying the pinion size and the gears. Ford. I guess 66 will work too, but I don't have any way to verify this, nor any more information for you. 0000002038 00000 n Pontiacs had 1.75-inch-wide drums in 1957-58 while Olds used 2-inch from 1959-on, both used 2-inch brakes. Vintage 1980 Yamaha Enticer Snowmobile Revival to Former Glory. Its narrow front end with a plastic, wrapped-around bumper featured fog lights as an option. The Pontiac/Oldsmobile 9.3-inch is your axle. So what we are left with is this: A fully capable, period-correct, brute of a differential with complete aftermarket support. Posts: 8. It is a little better than the Camaro 8.2 10 bolt. The 8.75-inch had slightly larger, 30-spline axleshafts compared to the P/O's 29-spline shafts; but by 1959, big 31-spline factory shafts were standard, and aftermarket shafts for the 9.3-inch eliminated any supposed shortcomings. 0000009416 00000 n Rear Wheel: Production Years for Series : 1964 - 1967 : Price : $2,437-$3,095: Weight : 3015 lbs | 1367.581 kg: Performance. To say I was disappointed by the service provided by this company would be an understatement. You are using an out of date browser. July 30, 2004 11:23PM. '65 Cadillac, '66 Buick Wildcat Fabcraft can also supply an excellent manual that tells you everything you need to know about these rearends, along with instructions on overhauling them, or they'll refurbish a rearend for you. As a result, many tribute cars and gasser-inspired builds had to stray from correctness. 59" 68-83 Corvette , 67-70 Mustang/Cougar/Fairlane, 60" 55-64 Chevy '67 Lincoln, '69 Dodge HVr0*u9$K;IG]&U&"x\s. Product By Category; Products By SKU/ID; . In 1958 a good thing got better when limited-slip differentials were offered. Understanding Aluminum Heads and Spark Plugs, OK Go Needing/Getting ~ Its All In The Timing, An Online Magazine for DIY Hot Rod Builders. 66-69 axle does not include 64 65 . All Rights Reserved. The 8.75 (8 3/4) rear end LOADS FROM THE FRONT and IS THE ONLY REAR END THAT DOESN'T HAVE A REAR COVER. For some time, only a small handful of ratios were available in new gears. 0000000016 00000 n GM quit making the 9.3-inch in 1964. PY Online Forums - Bringing the Pontiac Hobby Together, Classic TECH- specs, codes, resto issues FORUMS. Estimated Lead Time: 5-Days. While the Ford 9-inch is the perceived benchmark of popular rearends today, in stock form the edge would go to the Pontiac/Olds. But when it came to rearends, the overwhelming favorites were those our of '57-64 Pontiacs and Oldsmobiles. For a better experience, please enable JavaScript in your browser before proceeding. 60" 60's GMC and some Chevy's Dana 44 or Dana 60 with leaf springs 6 lug, Gear ratio's 3.21 to 3.92. Originally posted by SUNNYD @Mar 22 2007, 10:23 PM~7534589. A: Extremely strong! Rear axle flange to flange is supposedly wider than the 68-72 AND the 78-88 GM A and G body cars. Building an example that truly reflects what was around back then takes a certain passion for correctness. 0000003369 00000 n The Rochester Quadrajet carburetor was featured on the top spec GTO. candidate to replace the torque tube rear end or just get a better set of gears The now famous Ford 9-inch, with it's unique, straddle mounted pinion, offered great strength for its weight, but even the heavy-duty nodular-iron version suffered from weaknesses that the 9.3-inch did not. also note on the A4's (auto's) shifter console if the gear selector for 1 is missing. This reduced weight and eliminated the stock suspension, producing a spacious engine bay that eagerly accepted the chosen powerplant. The correct width for 59' & 60' is 63-1/4" I believe. 18 21 Prices and availability are subject if you dont have a versailles just a regular 9 inch rear end,, that is also 60 ". 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. 71- Newer 2wd trucks use a 5 on 5 lug pattern Currie Centurion Housing - Classic notchback looks in a new, high-strength, American-made housing, that features 3-inch diameter axle tubes, and CNC machined face flange, for a flat leak-free . '72 Cricket A little history: In 1957, three important axles were introduced: Ford's 9-inch, Chrysler's 8.75-inch, and GM's 9.3-inch Hotchkiss-style axle for Pontiac and Oldsmobile. . 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. Learn more. 3.08. '70 Duster , '71-77 Maverick 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. Axle Images: Axle Details. %twE_( H@v7H f)p* 0KO|O n>+ Length, GM 8.2 in. This posi has 4 pinion gears, which makes it about 2 times as strong as the Chevy Eaton posi. 0000008567 00000 n These smaller volumes and domestic content result in slightly higher prices. 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). It has the 4.75" bolt pattern, and ratios are usually 3.55-3.73, but sometimes you'll find a 3.36. A turbocharger was added to the 301 to give the 1980 Trans Am an injection of performance. Drag Racing 101 ~ Everything You Need to Know! '74 Valiant, '57 Ford Part Number: YGA-21289. $5 Off Your $100 Mobile App Purchase . 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. note 64 64 axle is same. getting back to the differential, why bill didn't cover 1956 i don't know, might have just been a typo or overlooked. Many Ford 9-inch parts are made offshore; they have smaller bearings and smaller diameter gears requiring less material. I placed the order with Speedway motors in late July for my rear end housing and Currie axles. There have been non C-clip rearends found in Chevelle wagons, and some El Caminos through at least 1974. Suspension Width (Flange to Flange), Ford Mustang II/Pinto & '72 Chrysler. In 1957, the Pontiac and Oldsmobile designs were combined and improved upon, producing a brand new 9.3-inch differential. Buy in monthly payments with Affirm on orders over $50. 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. stock from flange to flange it is 60 ". 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. I came up with a cheap simple method to confirm the results of the measurement taken with the loose wheels. Approximate rear end widths measured from backing JavaScript is disabled. '72 Cougar, '74 Pontiac, '49 Plymouth, '61 Chevrolet Impala Click the above picture to view full size. I have in the past struggled to measure the car for the correct rear end width to get the wheels and tires to fit correctly for both appearance and to avoid contact with the fenders, frame and suspension. 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. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. '62 Buick Skylark, '67 Chevrolet Six Model. Its pretty easy to find a good one if you are in an area with a few junkyards. cars 6" - 8" for large cars, '71 Colt the wider housing is not 1" closer to 3/4 . Good luck. And even though new internals were available from Fabcraft, the carriers were simply becoming too difficult to find. Identified by casting number & number of cover bolts. '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 '72 Cougar, '74 Pontiac '49 Plymouth, '61 Chevrolet Impala '65 Cadillac, '66 Buick Wildcat '66-67 Chevrolet Big Car, '72 Charger 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 Apply Rust Encapsulator Plus to a Rusty Rear End, How To Box-In a Differential / Solid Axle Rear-End Housing, How To Select Proper Rear-End / Differential Gear Ratio, Wheelbase Measurements for Popular Classic Cars, 1955 Chevrolet 3100 Step Side Pickup Truck Build, How To Cut Your Long Bed to a Short Bed in a Weekend, Engine / Transmission / Chassis Donor Search, Project Cars and Part Donor Cars For Sale. If in doubt, consult one of our differential experts at (800)510-0950! 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. I have heard that a 1st gen Pontiac Firebird rear is wider, but I am not sure by how much. hi don, there is no major difference in the pontiac differential from 1949 to 1956 other than rear brake related parts. You bring the gumption. Professional technical support is available . Outside of flange to outside 54.25" 66 up are wider. A solid front axle was found under the front of nearly every gasser. 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. 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. The following list What I did is shown below in the photos. used a 3.21 Dana 44 used a standard chevy "Hy-Tuff" axles are available for it from Moser and Mark Williams in any length (needed to . For instance, if both the engine and transmission deliver up to 100 ft./lbs. '70 Nova Many aftermarket options exist with all of the appropriate mount points. 5D med-duty 4-pinion. . Mickey Thompson even produced aftermarket Olds and Pontiac magnesium gear cases that were frequently used in dragsters. 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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 . It has been my experience that the 66 up axle is longer. For a variety of reasons, not the least of which is the current Gasser craze, Pontiac and Olds rearends are enjoying renewed popularity. NFTs Simplified > Uncategorized > pontiac rear end width chart. find the 1/2 ton size yoke on a dana 60. Mopar Rear Axle. The high-volume production runs of Ford-9 inch components allow them to be relatively inexpensive. 1990 to 1992: 7.625 inch ring gear, 28 spline axle. I just measured my 60' Pontiac and it is the same as my 62' Pontiac. Picture is from parts book. jack39rdstr # 169783 04/02/10 02:03 PM. 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. some Chevy's Dana 44 or Dana 60 with leaf springs 6 lug, Gear ratio's My 69 gto convert., purchased within the last year has a painful 2.56 rear gear. ; Home 2; Home 3; Home / / pontiac rear end width chart. 40/13. Engine Numbers. While not as strong as a race-dedicated spool, the 31-spline Trophy Track carries a potent arsenal, including six 9310 alloy gears and twin cross-shafts, all of which are dimensionally larger and stronger than anything offered previously. Task Force width ranges at this time. This information will change as further information and corrections become available. I ordering the axles from Bears Performance who kept thier promise of delivery in about a week. 0000007740 00000 n Registered: 16 years ago. Check here to see if your engine is correct for your year truck. A Chevy 1/2 ton pick-up may have a Chevy 10 bolt rear axle or a 12 bolt rear axle. Hot Rod Blueprints, Drawings and Tech Tips For The Hot Rod Enthusiast!. Like most american muscle cars of the Day the Pontiac GTO was a front engined rear wheel driven car. Both of these are semi-floating axles. 0000006068 00000 n 0000001170 00000 n 1967 Pontiac GTO - Wheel & Tire Sizes, PCD, Offset and Rims specs | Wheel-Size.com. Needle BUILD IT YOURSELF - PARTS LISTS BUSHINGS TO ADAPT TUBE SIZE . 70 2wd 6 lug rear end 12 bolt Possible gear ratio's . I did a quick google search for 65 impala rear end, and 65-66 impala rear end came up a lot. Several features are common to most gassers. If you noticed the axles are missing you would be correct. manufactured by Pontiac in United States. Add Width to compensate for drums as follows: 4" - 5" for small cars 5" - 6" for intermediate cars 6" - 8" for large cars . 57" 71-74 V-8 Terms of Service. Popular Automatic Transmission Identification Chart; Rear-End Widths of Classic American Cars; Follow Us on Flipboard . Chevy 10 Bolt Rear End Widths. 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. The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Wheel Stud *. ends with widths ranging from 58"- 62". There is also a yellow stamp 10 22 which is the . 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 .
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