The Trophy Track's strengthened bearing hubs even use larger-than-stock bearings, the same ones found on spools. Rear axle widths. It's not to the same level as a concours-correct restoration; no judge will deduct points for an incorrect paint code. 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. In this 489 case it is 3:91 gears and a 1 7/8 pinion. 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. According to published lists, the 55-64 Chevrolet rear end width is 60" from wheel mount surface to wheel mount surface. . In 1958 a good thing got better when limited-slip differentials were offered. SiteStats_3379(); '69 Nova Mercury Capri/Bobcat, Monte Carlo, Regal, etc. 62" 64-77 Chevelle, 73-76 Torino, 89 0000001644 00000 n 1990 to 1992: 7.625 inch ring gear, 28 spline axle. Learn more. The Borg-Warner HD rear end was dropped and replaced with the old 7.625 (7 5/8) inch rear end. It may not display this or other websites correctly. Add Width to 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 . There is also a yellow stamp 10 22 which is the . 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. . 60" 60's GMC and Vehicles with Similar . 0000015097 00000 n Approximate rear end widths measured from backing plate to backing plate. Compared side-by-side with the Chrysler, it boasted stronger gears and larger bearings. '67 Mustang V-8, '69 Firebird Calculating the torque multiplication that your axle gears provide is quite easy. some Chevy's Dana 44 or Dana 60 with leaf springs 6 lug, Gear ratio's 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. * Pinion #s GM 40 13 == 67 K D. If in doubt, consult one of our differential experts at (800)510-0950! Axle Images: Axle Details. 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. 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. 0000006915 00000 n I actually had the axles in less than 4 days! '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 I'm not sure of the Rear axle flange to flange is supposedly wider than the 68-72 AND the 78-88 GM A and G body cars. The Firebird rear end would have been a BOP 8.2 10 bolt. 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. 40/13. 18 21 but the body with is 1" wider on 66-67. for highway driving. Diagram. Understanding Aluminum Heads and Spark Plugs, OK Go Needing/Getting ~ Its All In The Timing, An Online Magazine for DIY Hot Rod Builders. 1939 engine numbers run 1915447 through 2697267. 3.08. For instance, if both the engine and transmission deliver up to 100 ft./lbs. Trans Am. candidate to replace the torque tube rear end or just get a better set of gears ends with widths ranging from 58"- 62". I have heard that a 1st gen Pontiac Firebird rear is wider, but I am not sure by how much. The following tags will show a 4L80E transmission as an example. 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. Building a gasser is a satisfying way to blast down the track, turn some heads, and salute the good old days of racing. . lx ?ZXj^|\\(|ka(XKIg#+ 66-69 axle does not include 64 65 . Many aftermarket options exist with all of the appropriate mount points. The 10-bolt was used in all the low performance applications. 70-81 4wd 6 lug reared 5D med-duty 4-pinion. I just measured my 60' Pontiac and it is the same as my 62' Pontiac. CK 15/35, S10, RV. 0000001170 00000 n Jeremy. S10. The Rochester Quadrajet carburetor was featured on the top spec GTO. '72-73 Mazda, '28-40 Ford , '57 - 59 Ford startxref Drag Racing 101 ~ Everything You Need to Know! I'm running the wider blazer rear end . The correct width for 59' & 60' is 63-1/4" I believe. 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. It has been my experience that the 66 up axle is longer. Accurate Differential Identification is the first and most important step in your differential repair, upgrade or overhaul project. '72 Dart B. '67 Lincoln, '69 Dodge If you noticed the axles are missing you would be correct. Approximate rear end widths measured from backing 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. 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. )EgZ(WLlT!c!r~;+{( BRnpX{n>S;;5q N`+UHWF*FA6*BKm)JBw You bring the gumption. 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 following list Check our the Chevy rear end gear ratio chart above to help you identify the correct gear to use. AXLE DIFF 4X4 FRONT DIFF PARTS AXLE DIFF REAR END PARTS . Valves. I guess 66 will work too, but I don't have any way to verify this, nor any more information for you. Snap On vs Daytona, Pittsburgh, ESCO, Husky, More. $5 Off Your $100 Mobile App Purchase . 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. Willwood Engineering. For a variety of reasons, not the least of which is the current Gasser craze, Pontiac and Olds rearends are enjoying renewed popularity. Task Force width ranges at this time. Maverick 5 Lug 8", 49-51 Ford, 57-59 Ford 9", 58" 78-88 Mid It has been my experience that the 66 up axle is longer. 1967 Pontiac GTO - Wheel & Tire Sizes, PCD, Offset and Rims specs | Wheel-Size.com. 0000002277 00000 n ; Home 2; Home 3; Home / / pontiac rear end width chart. 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. 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(Rear Wheel Drive) +20 offset. /** * Error Protection API: WP_Paused_Extensions_Storage class * * @package * @since 5.2.0 */ /** * Core class used for storing paused extensions. Car, 67-69 Camaro, 64-67 Chevelle, For a better experience, please enable JavaScript in your browser before proceeding. B-O-P axles also have identifying grooves traveling along each side of . Year. '70 Nova Outside of flange to outside 54.25" 66 up are wider. 18 0 obj<> endobj 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 . 0000012085 00000 n Will only work with bolt in style axles. 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? July 30, 2004 11:23PM. RWD (rear-wheel drive), automatic 4-speed gearbox. This reduced weight and eliminated the stock suspension, producing a spacious engine bay that eagerly accepted the chosen powerplant. '41 -48 Ford, '68-72 Chevelle Its role in drag racing was limited to primarily Stock, Super Stock, and Factory Experimental Fords. Rear End Widths - - Back - - Home > Specs > Rear End Widths : Representative for comparison purposes only. 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. ?|-Zce14^nF%67( }fSRaQfqX?|{8{>? VX5EX=b :"-'k>.VbyV^-nWxv-WgUtpo>sMhlI4ZV<4+s>|2k>\x{7M^^x. Information provided by:Joe GarciaThe Resto Rod Shop. 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 " "" "" ". Click the above picture to view full size. These dimensions do not include brake drums and are measured from backing plate to backing plate. The housing came in a couple of weeks but without the axles. 62" 64-77 Chevelle, 73-76 Torino, 89 Trans Am. Automotive Technical and Reference Information, Project Cars, Trucks and Salvage Vehicles For Sale. NFTs Simplified > Uncategorized > pontiac rear end width chart. The '70 to '81 Camaro rear end is 61 inches. 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. 41/14. Cylinders. Post: rear end width chart (Topic#173541) greg pharr Contributor Posts: 897 Loc: North Mississippi Reg: 07-09-03. The current axle needs to be measured to verify width, because it plays an important part in determining what rim backspacing is necessary. 0000008567 00000 n 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. 0000001291 00000 n Prices and availability are subject Pontiac labeled theirs Safe-T-Trac while Oldsmobile called it Anti-Slip. The1971-'72 Buick GS/Skylark and Olds Cutlass A-body 8.5 10 bolt did not have C-clip axles. 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. I ordering the axles from Bears Performance who kept thier promise of delivery in about a week. In 1957, the Pontiac and Oldsmobile designs were combined and improved upon, producing a brand new 9.3-inch differential. '72 Cougar HVr0*u9$K;IG]&U&"x\s. [ July 26, 2022 ] Reversing Gears ~ Rescuing One's Own Derelict 1967 Pontiac GTO Builds and Examples [ July 24, 2022 ] . sized GM Car, Malibu/Monte Carlo (82 up Metric Studs), 80 Granada & Wheel Stud *. SKU: CE-GMG7887X. '69 Javelin Six, '39 -48 Chevrolet 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. 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. I did a quick google search for 65 impala rear end, and 65-66 impala rear end came up a lot. '72 Cougar, '74 Pontiac, '49 Plymouth, '61 Chevrolet Impala Buick and Pontiac 10-bolt rear ends used flange-retained axles instead of the C-clip retained axles like those on Chevrolet rears. GM quit making the 9.3-inch in 1964. note 64 64 axle is same. This ratio is 3.08, perfect for cruisin. list of rear ends and their dimensions to help narrow the search for a possible Ford. Like most american muscle cars of the Day the Pontiac GTO was a front engined rear wheel driven car. 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. '70 Duster '69 Javelin Six , '70 dodge Add Width to compensate for drums as follows: 4" - 5" for small cars 5" - 6" for intermediate cars 6" - 8" for large cars . 71- Newer 2wd trucks use a 5 on 5 lug pattern of extensive information was contributed by R. Welch: Original Vehicles Like the 8.2-inch 10-bolt, the 8.5 10-bolts use C-clips to retain the axles. 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. 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 Actual wheel track could be as much as 6" to 8"depending on drum size: '67 to '70 Mustang/Cougar 6 cyl. Needle BUILD IT YOURSELF - PARTS LISTS BUSHINGS TO ADAPT TUBE SIZE . 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. As the popularity of the Ford 9-inch increased the P/O 9.3 began to fade from the scene. A turbocharger was added to the 301 to give the 1980 Trans Am an injection of performance. Its pretty easy to find a good one if you are in an area with a few junkyards. endstream endobj 29 0 obj<>stream 70 2wd 6 lug rear end 12 bolt Possible gear ratio's '70 Duster , '71-77 Maverick 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. Vintage 1980 Yamaha Enticer Snowmobile Revival to Former Glory. But when it came to rearends, the overwhelming favorites were those our of '57-64 Pontiacs and Oldsmobiles. 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. GM 10-bolt rear ends have four basic ratio choices: 2.73, 3.08, 3.42, and 3.73 . Is a pontiac center section as olds rear ends of that era? So why did the Ford 9-inch become the premier differential of modern day hot rodding? Today finding a P/O 9.3 may take some searching and it's helpful to know what to look for. 5" for small cars 5" - 6" for intermediate '71 Comet 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 . may be different than pictured. PY Online Forums - Bringing the Pontiac Hobby Together, Classic TECH- specs, codes, resto issues FORUMS. Both of these are semi-floating axles. But it's been so long I can't be certain. The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Add Width to compensate for drums as follows: 4" - 5" for small cars 5" - 6" for intermediate cars 6" - 8" for large cars . $1,825.00. %PDF-1.4 % Six rib cases will be found on '57 and '58 rearends, '59-64s have seven ribs. 3:08, 3:40, 3:73 Contributing information were Bob Welch, J The power is transmitted to the road by the rear . "SPECIAL" CARS - 1938 Pontiac Special six. Buy in monthly payments with Affirm on orders over $50. jack39rdstr # 169783 04/02/10 02:03 PM. manufactured by Pontiac in United States. The 1' wider that was stated in paul/chuck 's book may have been miss spoke. You can do this by multiplying by the gear ratio. . charles coker, 1953 pontiac tech advisor. I'm sorry if I repeated what I've learned to accept as fact, but there are other reasons besides what I've read that have convinced me that '64/'65 housings are narrower than the '66/'67. to change without notice. I used 5" long lag bolts to hold the end pieces of wood on which permitted me to add up to 1.5" of shims to each end. "+j)(4 T "Hd&6F T:R%xA+R>6^yyp0}Zc9^):(cdf_rKr2zB,ywV}w0*lkxwM y icR,2*G{>K\"|>XWAIRYQ_dKx}wt}_=/3=)>fQaa-# C+|prj~%ox$LpKaGPG&T`o. %twE_( H@v7H f)p* 0KO|O n>+ What I did is shown below in the photos. If you're building a period-correct car, especially a Gasser, they are undoubtedly the perfect rearend for today. GU2 - 2.73's Standard auto trans gear ratio. Rear-end track width measurements of classic American cars including Chevrolet, Ford, and Mopar vehicle rear axle widths. '72 Cricket Aftermarket support followed in the form of beefy axles, gears, spools, couplers, and Mickey Thompson's aluminum and magnesium centersections. . & Conditions, Ford Mustang II/Pinto & Mercury Capri/Bobcat, Monte Carlo, Regal, etc. 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. may be different than pictured. A solid front axle was found under the front of nearly every gasser. '72 Cougar, '74 Pontiac '49 Plymouth, '61 Chevrolet Impala '65 Cadillac, '66 Buick Wildcat '66-67 Chevrolet Big Car, '72 Charger For the do-it-yourselfer, Fabcraft offers a full-color manual with excellent tech info on the differential. You must log in or register to reply here. 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 Rusty but Rare 1976 Chevy K10 Sport Truck Revival! Billet-steel yokes and carrier caps could be added to make the 9.3-inch nearly bomb-proof. 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 . 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 well i have 1 from f 150 82 b/plate 2 b/plate it is 58". "Stovebolt" Specifications. '71 Comet , '71- 72 Pinto, '39 -48 Chevrolet, '68 GTO Stop listening to your street rodder buddy and back away from the 9-inch. 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. Additionally, it can be a relatively affordable way to enjoy a day at the track. 0000004229 00000 n Compared to the Ford, the P/O parts were more expensive. 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.

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