pontiac rear end width chart - casessss.com A Chevy 1/2 ton pick-up may have a Chevy 10 bolt rear axle or a 12 bolt rear axle. Building an example that truly reflects what was around back then takes a certain passion for correctness. '70 Dodge, '71-77 Maverick 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. NFTs Simplified > Uncategorized > pontiac rear end width chart. of extensive information was contributed by R. Welch: Original Vehicles Items Rear end interchangability 1965 to 1967 IMPALA 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. '69 Oldsmobile 88, '72 Chrysler Ask Away! with Jeff Smith: 8.2 or 8.5 How to Identify GM 10-Bolt Rear GM 8.2" and 8.2" BOP Axle Parts, Gears, and Upgrades - Drivetrain Shop pontiac rear end width chart - akzenterprises.com } The 8.2" BOP (Buick, Oldsmobile, Pontiac) model is slightly different in that it uses pressed on axle bearings and instead of c-clips . I am using a 62' Olds rear in my 61' Bel Air and it is 1" wider that the stock Bel Air rear. Why not a Ford? You bring the gumption. They were robust, drop-out-style third members that offered the strength and serviceability racers required. )EgZ(WLlT!c!r~;+{( BRnpX{n>S;;5q N`+UHWF*FA6*BKm)JBw J.T. And even though new internals were available from Fabcraft, the carriers were simply becoming too difficult to find. 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. Copyright 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. '65 Cadillac, '66 Buick Wildcat The new 9.3-inch provided outstanding durability when subjected to abuse from all classes of race cars, including Top Fuel. Rear End Widths - - Back - - Home > Specs > Rear End Widths : Representative for comparison purposes only. trailer 0000002038 00000 n 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. The Rochester Quadrajet carburetor was featured on the top spec GTO. 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. '66-67 Chevrolet Big Car, '72 Charger Suspension Measurements - Quick Performance Beginning with a new line of U.S.-made gearsets in desirable ratios, Fabcraft rekindled the flickering flame of the 9.3-inch. Cylinders. The final drive ratio is identified with 2 or 3 letters codes. endstream endobj 19 0 obj<> endobj 21 0 obj<> endobj 22 0 obj<>/Font<>/ProcSet[/PDF/Text]/ExtGState<>>> endobj 23 0 obj<> endobj 24 0 obj<> endobj 25 0 obj[/ICCBased 36 0 R] endobj 26 0 obj<> endobj 27 0 obj<> endobj 28 0 obj<>stream I have heard that a 1st gen Pontiac Firebird rear is wider, but I am not sure by how much. Measuring for the correct rear end width - Rodplans PONTIAC Bolt Pattern Cross Reference and Wheel Sizes with 10 bolt axle, "A" body There's absolutely no excuse to use the wrong differential in your gasser. 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. For many years prior, Olds and Pontiac differentials had been a dominant rear axle in drag racing and other motorsports. Trans Am. 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. Here you can see the three white paint splotches identifying the pinion size and the gears. 40/13. 1982 to 1984: 7.5 inch ring gear, 26 spline axle. Lincoln Versailles, Regal with 10 bolt axle, S-10 P.U., 65-67 Nova. charles coker, 1953 pontiac tech advisor. GM 10-bolt rear ends have four basic ratio choices: 2.73, 3.08, 3.42, and 3.73 . |;|tB70t:`!t;?Yp?o^16Y*Ra(k ;6te64^bv n+;:G57@hbM_5 N Like most american muscle cars of the Day the Pontiac GTO was a front engined rear wheel driven car. 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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. 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. <<3d7f7a4e8421a74f9b85ec848848f3a1>]>> 5E med-duty 4-pinion. The power is transmitted to the road by the rear . It is now late November and I still do not have my axles. '67 to '70 Mustang/Cougar 8 cyl. 3.21 to 3.92. getting back to the differential, why bill didn't cover 1956 i don't know, might have just been a typo or overlooked. Chrysler sent out the last of its 8.75-inch rearends in the early '70s. If you're building a period-correct car, especially a Gasser, they are undoubtedly the perfect rearend for today. Technical Information and Specifications for 1939 and 1940 - Stovebolt '72 Charger 0000008567 00000 n to change without notice. I did a quick google search for 65 impala rear end, and 65-66 impala rear end came up a lot. No one is making new 31-spline side gears at this time, which is not good. Dec 26, 2008. As the popularity of the Ford 9-inch increased the P/O 9.3 began to fade from the scene. Discussion in 'Traditional Hot Rods' started by Ruiner, Sep 4, 2006. For instance, if both the engine and transmission deliver up to 100 ft./lbs. 64 Rear End Width - Bringing the Pontiac Hobby Together . . All housings have strong, tapered axle tubes, come in numerous widths, and sport a variety of suspension brackets. Inland Empire GTO Club - An All Pontiac Club All but a few of the old factory limited-slips had been gathered up and beaten to death. ?|-Zce14^nF%67( }fSRaQfqX?|{8{>? VX5EX=b :"-'k>.VbyV^-nWxv-WgUtpo>sMhlI4ZV<4+s>|2k>\x{7M^^x. Pontiac labeled theirs Safe-T-Trac while Oldsmobile called it Anti-Slip. Snap On vs Daytona, Pittsburgh, ESCO, Husky, More. Last Update: Feb. 24, 2023, 5:12 a.m. A: Extremely strong! 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. 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. Diagram. How to cut your Ford F100 long bed to short bed in a weekend DIY project ~ Two-Part video details cutting frame and bed. The intake valve size increased to 2.11" and the exhaust valve increased to 1.77"in size from the previous model. 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. GM G-Body Housing and Axle Package - Currie Enterprises Contributing information were Bob Welch, J Today finding a P/O 9.3 may take some searching and it's helpful to know what to look for. 0000000911 00000 n The housing came in a couple of weeks but without the axles. For the do-it-yourselfer, Fabcraft offers a full-color manual with excellent tech info on the differential. It has been my experience that the 66 up axle is longer. Find 1967 PONTIAC GTO Differential & Rear-End Components and get Free Shipping on Orders Over $99 at Summit Racing! 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. A solid front axle was found under the front of nearly every gasser. Rear Suspension Width (Flange to Flange), Donor Vehicles Front and Rear Differential Identification Chart - Roadkill Customs Suspension Measurements - Fred's Pontiac Information 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. The 78-88 mid size GM cars use a 7.5" 10 bolt, which is about 58/5" wide. 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 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. 8.5 firebird rearend width? | Team Camaro Tech 1967 PONTIAC GTO Differential & Rear-End Components Six-cylinder truck engine block and head casting numbers. 0000001170 00000 n 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 . '71 - 72 Pinto while a folding bench was standard for the rear passengers. Interest in vintage drag racing is now approaching a rapid boil. Its narrow front end with a plastic, wrapped-around bumper featured fog lights as an option. 3.08. Mercury Capri/Bobcat, Monte Carlo, Regal, etc. '70 Nova But when it came to rearends, the overwhelming favorites were those our of '57-64 Pontiacs and Oldsmobiles. You can do this by multiplying by the gear ratio. 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. 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. The new P/O 9.3-inch immediately found its way into hot rods and race cars. Under the hood, Pontiac installed a 2.5 . 1982-1997. hi don, there is no major difference in the pontiac differential from 1949 to 1956 other than rear brake related parts. Impala Rearend width ? | LayItLow.com Lowrider Forums 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. '68 AMX The 10-bolt was used in all the low performance applications. 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. used a 3.21 Dana 44 used a standard chevy Engine Numbers. It'll help you sniff out the right parts and will walk you through building the differential for your gasser project. 10-Bolt Chevy Identification Guide. Know What You're Looking At 57" 71-74 V-8 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. 1939 engine numbers run 1915447 through 2697267. 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 " "" "" ". 2/4-door sedan body type. Understanding Aluminum Heads and Spark Plugs, OK Go Needing/Getting ~ Its All In The Timing, An Online Magazine for DIY Hot Rod Builders. '72 Cougar 6 lug rear end 12 bolt Coil spring set up Possible gear ratio's 3.70. 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. 62" 64-77 Chevelle, 73-76 Torino, 89 GM / Chevy - Differential IdentificationShop by your differential. Approximate rear end widths measured from backing plate to backing plate. "+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. Copyright 2023 Welcome To Rodplans! You are using an out of date browser. $1,825.00. Housings with leaf springs were used under Pontiac and Olds in 1957 and Olds only in 1958-60; Pontiacs had coil springs in 1958-60 and from 1961-64 both had coils. pontiac rear end decoder year ratio open posi model notes: . 1967 Pontiac GTO - Wheel & Tire Sizes, PCD, Offset and Rims specs | Wheel-Size.com. '72 Cougar, '74 Pontiac, '49 Plymouth, '61 Chevrolet Impala $5 Off Your $100 Mobile App Purchase . 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. 1958-1970 Full size Chevy rear differential identification chart. Calculating the torque multiplication that your axle gears provide is quite easy. Rear axle widths. I just measured my 60' Pontiac and it is the same as my 62' Pontiac. pontiac rear end width chart . 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. '66 Falcon, '69 Chevrolet '67 Mustang V-8, '69 Firebird '55 -57 Chevrolet, 68-69 Fair lane 6 or 8 Dec 20, 2007. I believe the width, outside axle flange to outside axle flange, is 64 inches. 1985 to 1989: 7.625 inch ring gear, 26 spline axle. Rear-end questions. . I'm running the wider blazer rear end . Pontiac Rear End Gear Codes - Ron's Pontiac Page However, the 9.3-inch differential was saved from obsolescence by a Texas-based company called Fabcraft Metalworks and its owner, Brad Duerst. Combination / conversion universal joint size, dimensions Vehicles with Similar . /** * Error Protection API: WP_Paused_Extensions_Storage class * * @package * @since 5.2.0 */ /** * Core class used for storing paused extensions. 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 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? lx ?ZXj^|\\(|ka(XKIg#+ '70 Duster , '71-77 Maverick 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. In this 489 case it is 3:91 gears and a 1 7/8 pinion. 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. Pontiac Flathead Owners - Antique Automobile Club of America rear width | Team Camaro Tech 0000007740 00000 n 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. '72-73 Torino, STOCK CENTER TO CENTER SPRING PERCH DISTANCE, '69 Chevrolet of torque to the pinion gear and the gear ratio of the ring-and-pinion is say 4.12:1, the output torque is 412 ft./lbs. Source for tire and wheel application fitment data. 70 2wd 6 lug rear end 12 bolt Possible gear ratio's Check our the Chevy rear end gear ratio chart above to help you identify the correct gear to use. The S10 10bolt 7.5/7.625" rear end is a good choice for the light low to medium horsepower small block cars. Shop Full Width; Shop With Sidebar; . 71- Newer 2wd trucks use a 5 on 5 lug pattern 1956 and back have 10-spline axles. Quick question, I'm looking at a '50 Pontiac and was wondering if it had a torque-tube or a driveshaft. '71 Comet '70's Ford Grenada Rear Axle Identification : Drivin' It Home manufactured by Pontiac in United States. 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. For some time, only a small handful of ratios were available in new gears. Gallery: '66-'70 B-Body 8.75 Rear Differential Identifiers & Markings Rear Axle Widths - Hemmings Motor News Rear end gear ratio???? - LS1LT1 Forum Jeremy. 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. Several years later, the popularity of this almost deceased differential was rapidly swelling. 1969. ends with widths ranging from 58"- 62". The dana pinion stands forward about 2" more than the 9 1/4, the driveshaft will need to be shortened accordingly. 1967 Pontiac GTO - Wheel-Size.com Re: Rear end interchangability 1965 to 1967 IMPAL. 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 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. 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 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. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass. All Rights Reserved. 3:08, 3:40, 3:73 0000006915 00000 n GM quit making the 9.3-inch in 1964. Actual wheel track could be as much as 6" to 8"depending on drum size: '67 to '70 Mustang/Cougar 6 cyl. 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. 66-69 axle does not include 64 65 . to change without notice. stock from flange to flange it is 60 ". some sources state that the 67 and latter are wider. 0000015097 00000 n 73-77 GM A-body axle width? | Hot Rod Forum '67 Chevrolet Six may be different than pictured. Will only work with bolt in style axles. a Custom Classic Truck" Peterson Publication; June or July 1999,