'67 Mustang Length, GM 8.2 in. 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. The new P/O 9.3-inch immediately found its way into hot rods and race cars. The Borg-Warner HD rear end was dropped and replaced with the old 7.625 (7 5/8) inch rear end. These smaller volumes and domestic content result in slightly higher prices. <<3d7f7a4e8421a74f9b85ec848848f3a1>]>> Buy in monthly payments with Affirm on orders over $50. It has been my experience that the 66 up axle is longer. Terms of Service. They were tough with 9.3-inch ring gears, big pinion shafts, and large-diameter bearings and tough axles. @`AWG^8J>4j|^Vk@oXq7@@/9ep Someone may correct me, but as I recall 1959 was the first year for the "Wide Track" Pontiac. 41/14. 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. No one is making new 31-spline side gears at this time, which is not good. Aftermarket support followed in the form of beefy axles, gears, spools, couplers, and Mickey Thompson's aluminum and magnesium centersections. Pontiac labeled theirs Safe-T-Trac while Oldsmobile called it Anti-Slip. I just measured my 60' Pontiac and it is the same as my 62' Pontiac. '72 Cougar, '74 Pontiac '49 Plymouth, '61 Chevrolet Impala '65 Cadillac, '66 Buick Wildcat '66-67 Chevrolet Big Car, '72 Charger 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. 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. 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. Both of these are semi-floating axles. I believe the width, outside axle flange to outside axle flange, is 64 inches. 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. while a folding bench was standard for the rear passengers. jack39rdstr # 169783 04/02/10 02:03 PM. '71 - 72 Pinto Learn more. 0000002004 00000 n '69 Oldsmobile 88, '72 Chrysler The 8.2" BOP (Buick, Oldsmobile, Pontiac) model is slightly different in that it uses pressed on axle bearings and instead of c-clips . A Chevy 1/2 ton pick-up may have a Chevy 10 bolt rear axle or a 12 bolt rear axle. Engine Numbers. Wilwood Engineering, Inc. - 4700 Calle Bolero - Camarillo, CA 93012 - (805) 388-1188. GM quit making the 9.3-inch in 1964. In 1958 a good thing got better when limited-slip differentials were offered. The actual width that I made out of wood was based on both the measurements I had taken with the loose wheels and my research to determine what widths were available for purchase. 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. //-->. 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 . GU5 - 3.23's Optional auto trans gear ratio. Outside of flange to outside 54.25" 66 up are wider. In searching the web I found the following links that have a massive of information on rear end widths and wanted to share. Today finding a P/O 9.3 may take some searching and it's helpful to know what to look for. 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. The dana pinion stands forward about 2" more than the 9 1/4, the driveshaft will need to be shortened accordingly. Ford. '67 Mustang Six , '68 AMX Pontiac/Olds 9.3 parts are manufactured in the United States and are made in smaller custom production runs using high-quality alloys and the best materials available. Terms The renewed interest in the P/O 9.3-inch generated high demand for any limited-slip units that were left. 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 a better experience, please enable JavaScript in your browser before proceeding. J.T. 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). 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. But when it came to rearends, the overwhelming favorites were those our of '57-64 Pontiacs and Oldsmobiles. I've read enough times that '64/'65 are 54.25" and '66's are an inch wider that I believe it. )EgZ(WLlT!c!r~;+{( BRnpX{n>S;;5q N`+UHWF*FA6*BKm)JBw The following is a general I placed the order with Speedway motors in late July for my rear end housing and Currie axles. 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. The following tags will show a 4L80E transmission as an example. . My 69 gto convert., purchased within the last year has a painful 2.56 rear gear. JavaScript is disabled. A: Ford 9-inch is like the small-block Chevy of rearends. to change without notice. Housings with leaf springs were used under Pontiac and Olds in 1957 and Olds only in 1958-60; Pontiacs had coil . Approximate rear end widths measured from backing Add Width to compensate for drums as follows: 4" - 5" for small cars 5" - 6" for intermediate cars 6" - 8" for large cars . 0000006915 00000 n 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. AXLE DIFF 4X4 FRONT DIFF PARTS AXLE DIFF REAR END PARTS . (painful to me while driving) I am pretty sure that it is the standard BOP 8.2, 10 bolt. BOP, Pontiac, Each. '70 Duster , '71-77 Maverick var I=new Image(1,1); I.src=u; The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Displays PONTIAC bolt patterns, wheel sizes and dimensions by model or view all matching vehicles that will swap or interchange with PONTIAC wheels. Q: Why do Pontiac/Olds 9.3 parts cost more than those for a Ford 9-inch? 1940 engine numbers run 2697268 through 3665902. '69 Javelin Six , '70 dodge Your Nova should be the same as 67-69. '69 Firebird Mavericks 8", All '75-77 6's & 8's '72 Dart 0 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 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 . '70 Duster 1957-58 are 29-spline and 1959-1964 are 31 spline. with 10 bolt axle, "A" body There have been non C-clip rearends found in Chevelle wagons, and some El Caminos through at least 1974. '72 Cougar Vintage 1980 Yamaha Enticer Snowmobile Revival to Former Glory. the wider housing is not 1" closer to 3/4 . 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. Check here to see if your engine is correct for your year truck. While the Ford 9-inch is the perceived benchmark of popular rearends today, in stock form the edge would go to the Pontiac/Olds. Cylinders. What is the width of a 1959 pontiac rear end? 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. 0000001170 00000 n I have heard that a 1st gen Pontiac Firebird rear is wider, but I am not sure by how much. Needle BUILD IT YOURSELF - PARTS LISTS BUSHINGS TO ADAPT TUBE SIZE . Automotive Technical and Reference Information, Project Cars, Trucks and Salvage Vehicles For Sale. to change without notice. Under the hood, Pontiac installed a 2.5 . 4.24 out of 5 stars. The early Nova's 62-67 would be about 2" shorter. Pontiacs had 1.75-inch-wide drums in 1957-58 while Olds used 2-inch from 1959-on, both used 2-inch brakes. Many Ford 9-inch parts are made offshore; they have smaller bearings and smaller diameter gears requiring less material. pontiac rear end width chart . 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. Good luck. July 30, 2004 11:23PM. Jeremy. 0000000911 00000 n Last Update: Feb. 24, 2023, 5:12 a.m. Buick/Olds/Pontiac axles are typically retained with bearings. 5E med-duty 4-pinion. 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 ; . 1958-1970 Full size Chevy rear differential identification chart. Additionally, it can be a relatively affordable way to enjoy a day at the track. Beginning with a new line of U.S.-made gearsets in desirable ratios, Fabcraft rekindled the flickering flame of the 9.3-inch. Why not a Ford? Building an example that truly reflects what was around back then takes a certain passion for correctness. Good third-member cores are also relatively easy to come by, as many are now being saved from recyclers by fellow enthusiasts. '69 Cougar, '71 -73 Nova '41 -48 Ford, '68-72 Chevelle There's absolutely no excuse to use the wrong differential in your gasser. Buick and Pontiac 10-bolt rear ends used flange-retained axles instead of the C-clip retained axles like those on Chevrolet rears. 3.21 to 3.92. Maverick 5 Lug 8", 49-51 Ford, 57-59 Ford 9", 58" 78-88 Mid The high-volume production runs of Ford-9 inch components allow them to be relatively inexpensive. Rear axle widths. Find your GMC/Chevy vehicle in the chart below and click on the illustration for a larger view. Picture is from parts book. 68-74 Nova, 71-73 Mustang/Cougar, 84-95 Corvette, 60-61" 64-69 1/2 ton 2wd Chevy/ Some GMC Is a pontiac center section as olds rear ends of that era? You can identify the B-O-P assemblies by the two reverse-scalloped sections of the differential cover located at the 9 and 3 o'clock positions. It has been my experience that the 66 up axle is longer. May 7, 2009. 2D reg-duty / 4D med-duty 4-pinion. PY Online Forums - Bringing the Pontiac Hobby Together, Classic TECH- specs, codes, resto issues FORUMS. trailer 0000006068 00000 n Discussion in 'Traditional Hot Rods' started by Ruiner, Sep 4, 2006. . Jeff Smith: When Chevrolet built the first Camaros in 1967, they were already in production of both 10- and 12-bolt rear-end housings. B. '55 -57 Chevrolet, 68-69 Fair lane 6 or 8 My '64's measure 54.25". 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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. Six rib cases will be found on '57 and '58 rearends, '59-64s have seven ribs. This ratio is 3.08, perfect for cruisin. Contributing information were Bob Welch, J CK 15/35, S10, RV. 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. Chrysler sent out the last of its 8.75-inch rearends in the early '70s. I'm running the wider blazer rear end . 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. It has the 4.75" bolt pattern, and ratios are usually 3.55-3.73, but sometimes you'll find a 3.36. 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. Wheel Stud *. Suspension Width (Flange to Flange), Ford Mustang II/Pinto & If you're building a period-correct car, especially a Gasser, they are undoubtedly the perfect rearend for today. 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 . Prices and availability are subject 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. '69 Nova In 1957, the Pontiac and Oldsmobile designs were combined and improved upon, producing a brand new 9.3-inch differential. 3.08. 0000001644 00000 n 60" 60's GMC and The 1' wider that was stated in paul/chuck 's book may have been miss spoke. Stop listening to your street rodder buddy and back away from the 9-inch. A: They came in all fullsize Pontiacs and Oldsmobiles from 1957-64. Hoonigan Founder and Pro Rally Driver Ken Block Dead at 55, Worlds MOST Unusual Cars Ever Made, Found In One Warehouse, Lower the Bar ~ Perfectionism is Ruining the Automotive Hobby, 1971 GMC COE Fire Truck to Ramp Truck Car Hauler Build, Roadkills Best (and Worst) Drag Strip Tests, How To Choose the Correct Drag Racing Tire, 25 Tools and Gift Ideas Under $15 From Harbor Freight You Need, The Myths And Realities Of Carburetor Sizing, The Inaugural No Name Nationals Drag Race & Burnout Contest Coverage, Lawn Mower Racing ~ The Worlds CHEAPEST Motorsport, Quick and Easy DIY Headliner for Less Than $20, 1928 Ford Model A Coupe Goes From Yard Art To Driver, How To Turn Railroad Track into a DIY Homemade Anvil, New Docu-Series from Rat Rod Magazine ~ American Rust, Finishing a Late Friends Handmade 1956 Baby Buick Special Mini Car, Best 3-Ton Floor Jack? The other drawback is that you can only check for clearance at the height the jack stands are set to. (rear-wheel drive), automatic 3-speed gearbox . 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! Model. Once I had determined the desired width with the loose wheels and tape measure I constructed a wood rear end out of a 2x4. Ford continued cranking out the 9-inch in vast quantities well into the '80s. Click the above picture to view full size. GU2 - 2.73's Standard auto trans gear ratio. I actually had the axles in less than 4 days! 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. 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. ; Home 2; Home 3; Home / / pontiac rear end width chart. 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. 0000000016 00000 n The P/O rearend and parts were getting harder to find and there were more Ford 9-inchers being made every day. Brand new gears in ratios from 3.42 through 5.38 could be purchased and mounted on a new forged-steel spool with 31- or 35-spline axles. I did a quick google search for 65 impala rear end, and 65-66 impala rear end came up a lot. 1982-1997. 0000012085 00000 n . The1971-'72 Buick GS/Skylark and Olds Cutlass A-body 8.5 10 bolt did not have C-clip axles. 0000002353 00000 n . Posts: 8. Richmond Gear calls the 57-64 Olds/Pontiac rear a GM 9.3" Axle (the ring gear is 9.3 inches). 0000002277 00000 n 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. "" "" ". i know in 1956 the pontiac dual range hydra-matic got a different driveshaft yoke. 0000007740 00000 n Building a gasser is a satisfying way to blast down the track, turn some heads, and salute the good old days of racing. GU3 - 3.08's V6 gear ratio. Rear axle flange to flange is supposedly wider than the 68-72 AND the 78-88 GM A and G body cars. The 301 was Pontiac's only V-8 left in production by 1979. The End of an Era. . 62" 64-77 Chevelle, 73-76 Torino, 89 Below matches. 5D med-duty 4-pinion. hi don, there is no major difference in the pontiac differential from 1949 to 1956 other than rear brake related parts. plate to backing plate. 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. 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. well i have 1 from f 150 82 b/plate 2 b/plate it is 58". Valves. Popular Tools & Look-Ups. Six rib cases will be found on '57 and '58 rearends, '59-64s have seven ribs. Many aftermarket options exist with all of the appropriate mount points. 6 lug rear end 12 bolt Coil spring set up Possible gear ratio's 3.70. * Pinion #s GM 40 13 == 67 K D. Other changes were made to the limited-slip carrier, but strength was not adversely affected. may be different than pictured. You're building a gasser. I guess 66 will work too, but I don't have any way to verify this, nor any more information for you. S10. Source for tire and wheel application fitment data. If in doubt, consult one of our differential experts at (800)510-0950! 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. Please select a rear end that matches your vehicle below.General Motors has a wide range of front and rear ends! Vehicle. Accurate Differential Identification is the first and most important step in your differential repair, upgrade or overhaul project. '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 Chrysler. 0000008567 00000 n If you noticed the axles are missing you would be correct. Add Width to Understanding Aluminum Heads and Spark Plugs, OK Go Needing/Getting ~ Its All In The Timing, An Online Magazine for DIY Hot Rod Builders. I came up with a cheap simple method to confirm the results of the measurement taken with the loose wheels. manufactured by Pontiac in United States. a Custom Classic Truck" Peterson Publication; June or July 1999,