0000007740 00000 n Additionally, it can be a relatively affordable way to enjoy a day at the track. GU6 - 3.42's Standard manual trans gear ratio. Plywood pieces work well for shims. Click the above picture to view full size. some Chevy's Dana 44 or Dana 60 with leaf springs 6 lug, Gear ratio's '69 Oldsmobile 88, '72 Chrysler . 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. Several years later, the popularity of this almost deceased differential was rapidly swelling. L = Low - Zero to Negative Offset, Offset typically RWD (Rear . Chrome 10 Bolt Rear End Cover Fits Chevy Pontiac Oldsmobile10 Bolt Differential '71 - 72 Pinto . Axle Images: Axle Details. } //-->. 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. Items "SPECIAL" CARS - 1938 Pontiac Special six. Copyright 2023 Welcome To Rodplans! 1982 to 1984: 7.5 inch ring gear, 26 spline axle. 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. 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. well i have 1 from f 150 82 b/plate 2 b/plate it is 58". [ July 26, 2022 ] Reversing Gears ~ Rescuing One's Own Derelict 1967 Pontiac GTO Builds and Examples [ July 24, 2022 ] . Trans Am. The End of an Era. 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. 71- Newer 2wd trucks use a 5 on 5 lug pattern 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. I've read enough times that '64/'65 are 54.25" and '66's are an inch wider that I believe it. 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. Rear Suspension Width (Flange to Flange), Donor Vehicles Front and Rear i know in 1956 the pontiac dual range hydra-matic got a different driveshaft yoke. 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 These dimensions do not include brake drums and are measured from backing plate to backing plate. 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. '72-75 Datsun Pickup Building a gasser is a satisfying way to blast down the track, turn some heads, and salute the good old days of racing. The 301 was Pontiac's only V-8 left in production by 1979. Stop listening to your street rodder buddy and back away from the 9-inch. A Chevy 1/2 ton pick-up may have a Chevy 10 bolt rear axle or a 12 bolt rear axle. 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 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 . '55 -57 Chevrolet, 68-69 Fair lane 6 or 8 may be different than pictured. The renewed interest in the P/O 9.3-inch generated high demand for any limited-slip units that were left. 0000006915 00000 n 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. The Rochester Quadrajet carburetor was featured on the top spec GTO. Actual wheel track could be as much as 6" to 8"depending on drum size: '67 to '70 Mustang/Cougar 6 cyl. list of rear ends and their dimensions to help narrow the search for a possible There are three different third-member castings, but all will install into any '57-'64 Pontiac/Olds housing. Length, GM 8.2 in. '41 -48 Ford, '68-72 Chevelle '64 1/2-'65 Mustang 0 You must log in or register to reply here. Wilwood Engineering designs and manufactures high-performance disc brake systems. 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. . The 1' wider that was stated in paul/chuck 's book may have been miss spoke. Compared side-by-side with the Chrysler, it boasted stronger gears and larger bearings. This reduced weight and eliminated the stock suspension, producing a spacious engine bay that eagerly accepted the chosen powerplant. You are using an out of date browser. The P/O rearend and parts were getting harder to find and there were more Ford 9-inchers being made every day. The most common GM unit for the 1982 to 1992 Camaro is the Saginaw style 10 bolt Chevy differential. 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. Car, 67-69 Camaro, 64-67 Chevelle, My '64's measure 54.25". What is the width of a 1959 pontiac rear end? 1957-58 are 29-spline and 1959-1964 are 31 spline. 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. Shop Full Width; Shop With Sidebar; . the versailles / granada rear ends from flange to flange is 58.5". 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. 3:08, 3:40, 3:73 18 0 obj<> endobj Factory Width. 0000001291 00000 n '72 Cougar 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 . Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass. In 1958 a good thing got better when limited-slip differentials were offered. Information provided by:Joe GarciaThe Resto Rod Shop. 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. HVMo0WJ~H|V`-e)6`!$)=-~6x@h1|o For a variety of reasons, not the least of which is the current Gasser craze, Pontiac and Olds rearends are enjoying renewed popularity. Six-cylinder truck engine block and head casting numbers. (Rear Wheel Drive) +20 offset. 1939 engine numbers run 1915447 through 2697267. For die-hard purists, it soon became a difficult proposition to build a worthy P/O 9.3-inch as aftermarket support subsided and the supply of virgin factory parts withered. 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. 0000000991 00000 n 0000012085 00000 n Wheel Stud *. Terms of Service. '74 Valiant, '57 Ford It is a little better than the Camaro 8.2 10 bolt. Like most american muscle cars of the Day the Pontiac GTO was a front engined rear wheel driven car. But the components should at least be grounded in the era. If in doubt, consult one of our differential experts at (800)510-0950! This ratio is 3.08, perfect for cruisin. 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 . Hot Rod Blueprints, Drawings and Tech Tips For The Hot Rod Enthusiast!. $5 Off Your $100 Mobile App Purchase . 1982-1997. The Borg-Warner HD rear end was dropped and replaced with the old 7.625 (7 5/8) inch rear end. According to published lists, the 55-64 Chevrolet rear end width is 60" from wheel mount surface to wheel mount surface. hi don, there is no major difference in the pontiac differential from 1949 to 1956 other than rear brake related parts. 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Buick and Pontiac 10-bolt rear ends used flange-retained axles instead of the C-clip retained axles like those on Chevrolet rears. The housing came in a couple of weeks but without the axles. Last Update: Feb. 24, 2023, 5:12 a.m. These smaller volumes and domestic content result in slightly higher prices. 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. All Rights Reserved. Suspension Width (Flange to Flange), Ford Mustang II/Pinto & Rusty but Rare 1976 Chevy K10 Sport Truck Revival! '72-73 Torino, STOCK CENTER TO CENTER SPRING PERCH DISTANCE, '69 Chevrolet BOP, Pontiac, Each. 71-76 Full Size Cars " 0000002277 00000 n . The power is transmitted to the road by the rear . "Hy-Tuff" axles are available for it from Moser and Mark Williams in any length (needed to . Copyright 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. . '67 to '70 Mustang/Cougar 8 cyl. Vintage 1980 Yamaha Enticer Snowmobile Revival to Former Glory. '72 Charger S10. '69 Nova 70 2wd 6 lug rear end 12 bolt Possible gear ratio's 0000015097 00000 n Approximate rear end widths measured from backing '66-67 Chevrolet Big Car, '72 Charger Vintage 1980 Yamaha Enticer Snowmobile Revival to Former Glory. 0000000016 00000 n The correct width for 59' & 60' is 63-1/4" I believe. 0000002004 00000 n The new P/O 9.3-inch immediately found its way into hot rods and race cars. 1956 and back have 10-spline axles. 18 21 Check our the Chevy rear end gear ratio chart above to help you identify the correct gear to use. Its pretty easy to find a good one if you are in an area with a few junkyards. 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. Look at the RPO codes. Advance Design Trucks seem to be using rear 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. '62 Buick Skylark, '67 Chevrolet Six Automotive Technical and Reference Information, Project Cars, Trucks and Salvage Vehicles For Sale. 0000001644 00000 n 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. Below matches. 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 : It has been my experience that the 66 up axle is longer. 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. 0000006068 00000 n trailer 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. 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? ends with widths ranging from 58"- 62". GU3 - 3.08's V6 gear ratio. Check here to see if your engine is correct for your year truck. Task Force width ranges at this time. It's not to the same level as a concours-correct restoration; no judge will deduct points for an incorrect paint code. PY Online Forums - Bringing the Pontiac Hobby Together, Classic TECH- specs, codes, resto issues FORUMS. A turbocharger was added to the 301 to give the 1980 Trans Am an injection of performance. They're tough, right? also note on the A4's (auto's) shifter console if the gear selector for 1 is missing. Engine Numbers. $1,825.00. Dec 26, 2008. 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. Pontiac Differential Codes Year Model Rear Ratio Tooth Count Std Code Posi Code 1970 Big Pontiac 2.56 41/16 UC VC 1970 Big Pontiac 2.73 41/15 UD VD 1970 Big Pontiac 2.93 41/14 UE VE 1970 Big Pontiac 3.23 42/13 UG VG 1970 Big Pontiac 3.42 41/12 UH VH 1970 Firebird 2.73 41/15 CRX CRY Mavericks 8", All '75-77 6's & 8's Buy in monthly payments with Affirm on orders over $50. 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 . 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 . Floor jack permits you to raise and lower wheels to check for clearance. '72 Dart . Your Nova should be the same as 67-69. While the Ford 9-inch is the perceived benchmark of popular rearends today, in stock form the edge would go to the Pontiac/Olds. You bring the gumption. Today finding a P/O 9.3 may take some searching and it's helpful to know what to look for. I came up with a cheap simple method to confirm the results of the measurement taken with the loose wheels. with 10 bolt axle, "A" body 5D med-duty 4-pinion. Needle BUILD IT YOURSELF - PARTS LISTS BUSHINGS TO ADAPT TUBE SIZE . http://www.jalopyjournal.com/forum/showthread.php?t=128884, http://www.jalopyjournal.com/forum/showthread.php?t=38805, Upstate New York, watching my New Yorker Rust, http://www.jalopyjournal.com/forum/showthread.php?t=128884&page=2, http://www.jalopyjournal.com/forum/showthread.php?p=1450810#post1450810, (You must log in or sign up to reply here. 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. Many aftermarket options exist with all of the appropriate mount points. A: Extremely strong! It is now late November and I still do not have my axles. You bring the gumption. '71 Comet Why not a Ford? It has been my experience that the 66 up axle is longer. Vehicle. 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. As the popularity of the Ford 9-inch increased the P/O 9.3 began to fade from the scene. Please select a rear end that matches your vehicle below.General Motors has a wide range of front and rear ends! Drag Racing 101 ~ Everything You Need to Know! Six rib cases will be found on '57 and '58 rearends, '59-64s have seven ribs. It has the 4.75" bolt pattern, and ratios are usually 3.55-3.73, but sometimes you'll find a 3.36. 1985 to 1989: 7.625 inch ring gear, 26 spline axle. . 60" 60's GMC and The other drawback is that you can only check for clearance at the height the jack stands are set to. 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 . 66-69 axle does not include 64 65 . 62" 64-77 Chevelle, 73-76 Torino, 89 lx ?ZXj^|\\(|ka(XKIg#+ Ironically the heavy-duty nature of the 9.3 worked against it and played a part in its demise. 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. 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. ; Home 2; Home 3; Home / / pontiac rear end width chart. Here you can see the three white paint splotches identifying the pinion size and the gears. 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 " "" "" ". some sources state that the 67 and latter are wider. With its larger bearings, larger gears, and larger axles, the P/O 9.3 would fall somewhere between the Ford 9-inch and the Dana 60 in terms of strength. Many Ford 9-inch parts are made offshore; they have smaller bearings and smaller diameter gears requiring less material. Newest [ January 23, 2023 ] Vintage 1980 Yamaha Enticer Snowmobile Revival to Former Glory Roadkill Powersports 6 lug rear end 12 bolt Coil spring set up Possible gear ratio's 3.70. 40/13. Once I had determined the desired width with the loose wheels and tape measure I constructed a wood rear end out of a 2x4. Plywood pieces work well for shims. All housings have strong, tapered axle tubes, come in numerous widths, and sport a variety of suspension brackets. '72 Cougar, '74 Pontiac '49 Plymouth, '61 Chevrolet Impala '65 Cadillac, '66 Buick Wildcat '66-67 Chevrolet Big Car, '72 Charger 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. Re: Rear end interchangability 1965 to 1967 IMPAL. Rear Wheel: Production Years for Series : 1964 - 1967 : Price : $2,437-$3,095: Weight : 3015 lbs | 1367.581 kg: Performance. Approximate rear end widths measured from backing plate to backing plate. J.T. Rim Width Measure from the inside of the outer lip at the bead seating point to the inner lip. With perhaps less than 10 percent of Pontiac and Oldsmobile fullsize cars possessing the Safe-T-Track and Anti-Spin options, prices for unmolested examples remained high. Lincoln Versailles, Regal with 10 bolt axle, S-10 P.U., 65-67 Nova. Accurate Differential Identification is the first and most important step in your differential repair, upgrade or overhaul project. Vehicles with Similar . I have a source for the axleshafts and the difference in the shafts shows this to be true, BUT doesn't show the diff center . Is a pontiac center section as olds rear ends of that era? I cut two axle flanges from a couple of short pieces of wood and then used 3/8 lag bolts to attach them to the longer center portion of the rear axle. Quick question, I'm looking at a '50 Pontiac and was wondering if it had a torque-tube or a driveshaft. Picture is from parts book. 2D reg-duty / 4D med-duty 4-pinion. Prices and availability are subject note 64 64 axle is same. GU2 - 2.73's Standard auto trans gear ratio. For many years prior, Olds and Pontiac differentials had been a dominant rear axle in drag racing and other motorsports. 62" 64-77 Chevelle, 73-76 Torino, 89 Trans Am. Mercury Capri/Bobcat, Monte Carlo, Regal, etc. In their day Pontiac and Olds rearends had a well-deserved reputation for toughness and reliability, that's why they were found under so many hot rods on the dragstrip and the street. '70 Duster "+j)(4 T "Hd&6F T:R%xA+R>6^yyp0}Zc9^):(cdf_rKr2zB,ywV}w0*lkxwM y icR,2*G{>K\"|>XWAIRYQ_dKx}wt}_=/3=)>fQaa-# C+|prj~%ox$LpKaGPG&T`o. Snap On vs Daytona, Pittsburgh, ESCO, Husky, More. 41/14. What I did is shown below in the photos. As a result, many tribute cars and gasser-inspired builds had to stray from correctness. It may not display this or other websites correctly. But when it came to rearends, the overwhelming favorites were those our of '57-64 Pontiacs and Oldsmobiles. There have been non C-clip rearends found in Chevelle wagons, and some El Caminos through at least 1974. 5" for small cars 5" - 6" for intermediate Valves. '67 Lincoln, '69 Dodge %twE_( H@v7H f)p* 0KO|O n>+ sized GM Car, Malibu/Monte Carlo (82 up Metric Studs), 80 Granada & If you're running a blower, turbo, nitrous, etc you will probably want to step up to a larger rear like a 9" or 12 bolt. The high-volume production runs of Ford-9 inch components allow them to be relatively inexpensive. 0000001170 00000 n pontiac rear end width chart . You're building a gasser. ?|-Zce14^nF%67( }fSRaQfqX?|{8{>? VX5EX=b :"-'k>.VbyV^-nWxv-WgUtpo>sMhlI4ZV<4+s>|2k>\x{7M^^x. 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. used a 3.21 Dana 44 used a standard chevy Posts: 8. '68 AMX Outside of flange to outside 54.25" 66 up are wider. Add Width to compensate for drums as follows: 4" - 5" for small cars 5" - 6" for intermediate cars 6" - 8" for large cars . The dana pinion stands forward about 2" more than the 9 1/4, the driveshaft will need to be shortened accordingly.

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