pontiac rear end width chart

A: They came in all fullsize Pontiacs and Oldsmobiles from 1957-64. JavaScript is disabled. . 1957-58 are 29-spline and 1959-1964 are 31 spline. Q: What cars did they originally come in? Will only work with bolt in style axles. 1310 yoke, Dana 60 used the heavy duty yoke which takes the larger 1350 yoke. The 301 was Pontiac's only V-8 left in production by 1979. L = Low - Zero to Negative Offset, Offset typically RWD (Rear . My 69 gto convert., purchased within the last year has a painful 2.56 rear gear. '73 Ventura, '65 Ram American Estimated Lead Time: 5-Days. The Pontiac/Oldsmobile 9.3-inch is your axle. to change without notice. 1982-1997. It is now late November and I still do not have my axles. 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. This engine produces a maximum power of 142 PS (140 bhp - 104 kW) at 5200 rpm and a maximum torque of 230.0 Nm (169 lb.ft) at 5200 rpm. Quality and service was excellent. 70 2wd 6 lug rear end 12 bolt Possible gear ratio's 5E med-duty 4-pinion. endstream endobj 29 0 obj<>stream '69 Javelin Six , '70 dodge Accurate Differential Identification is the first and most important step in your differential repair, upgrade or overhaul project. I have heard that a 1st gen Pontiac Firebird rear is wider, but I am not sure by how much. . 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. Pontiacs had 1.75-inch-wide drums in 1957-58 while Olds used 2-inch from 1959-on, both used 2-inch brakes. 0000002004 00000 n In head/2 per cylinder. While the Ford 9-inch is the perceived benchmark of popular rearends today, in stock form the edge would go to the Pontiac/Olds. 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 Borg-Warner HD rear end was dropped and replaced with the old 7.625 (7 5/8) inch rear end. with 10 bolt axle, "A" body I'm not sure of the Task Force width ranges at this time. It has been my experience that the 66 up axle is longer. 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. A turbocharger was added to the 301 to give the 1980 Trans Am an injection of performance. The two makes used very similar differentials through the mid-'40s and into the '50s. In 1958 a good thing got better when limited-slip differentials were offered. 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. GU3 - 3.08's V6 gear ratio. '72 Cougar, '74 Pontiac '49 Plymouth, '61 Chevrolet Impala '65 Cadillac, '66 Buick Wildcat '66-67 Chevrolet Big Car, '72 Charger 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. Vintage 1980 Yamaha Enticer Snowmobile Revival to Former Glory. Hot Rod Blueprints, Drawings and Tech Tips For The Hot Rod Enthusiast!. 6>"FlJz^l,*4&V0afw .a@z"PXdj}o`2/ OQs=`&qf aDK|/U32.)0i%q~P"BaLw.Y@`uwy#Do~vt*o~@$y-KZe]X3q'WWb2y)0`61"4@Q*`6k RPf\`H#@ ^M8-|&YxO-t Correct two piece design posi unit, exact for only 67 - 69 Firebird 10 bolt 8.2 rears. Your differential is the set of gears that allows your vehicles driven wheels to revolve at different speeds by splitting your engine torque in two directions, An Online Magazine for DIY Hot Rod Builders. '70 Nova Newest [ January 23, 2023 ] Vintage 1980 Yamaha Enticer Snowmobile Revival to Former Glory Roadkill Powersports Calculating the torque multiplication that your axle gears provide is quite easy. Trans Am. I ordering the axles from Bears Performance who kept thier promise of delivery in about a week. Copyright 2023 Welcome To Rodplans! I would like most people place the wheels and tires under the car and use a tape measure to determine the distance from wheel flange to wheel flange. Ford. Willwood Engineering. '70 Duster , '71-77 Maverick gasoline (petrol) engine with displacement: 5690 cm3 / 347.2 cui, advertised power: 216 kW / 290 hp / 294 PS ( SAE ), torque: 509 Nm / 375 lb-ft, more data: 1957 Pontiac Chieftain Sedan Tri-Power Hydra-Matic (aut. Valves. The 8.75 (8 3/4) rear end LOADS FROM THE FRONT and IS THE ONLY REAR END THAT DOESN'T HAVE A REAR COVER. Interest in vintage drag racing is now approaching a rapid boil. Lincoln Versailles, Regal with 10 bolt axle, S-10 P.U., 65-67 Nova. The simple cure when using wide tires with a stock-width rearend was to radius the fenders and let the tires hang out in the breeze. Registered: 16 years ago. 0000002038 00000 n For the do-it-yourselfer, Fabcraft offers a full-color manual with excellent tech info on the differential. "+j)(4 T "Hd&6F T:R%xA+R>6^yyp0}Zc9^):(cdf_rKr2zB,ywV}w0*lkxwM y icR,2*G{>K\"|>XWAIRYQ_dKx}wt}_=/3=)>fQaa-# C+|prj~%ox$LpKaGPG&T`o. '72-75 Datsun Pickup 0000001291 00000 n 66-69 axle does not include 64 65 . The non C-clip 8.5" 10 bolt, type "C" rearend was used in some 1969-'72 Pontiac GP and 1970-'72 Monte Carlo. CK 15/35, S10, RV. ?|-Zce14^nF%67( }fSRaQfqX?|{8{>? VX5EX=b :"-'k>.VbyV^-nWxv-WgUtpo>sMhlI4ZV<4+s>|2k>\x{7M^^x. Building an example that truly reflects what was around back then takes a certain passion for correctness. 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. HVMo0WJ~H|V`-e)6`!$)=-~6x@h1|o 40/13. Today finding a P/O 9.3 may take some searching and it's helpful to know what to look for. some sources state that the 67 and latter are wider. Rusty but Rare 1976 Chevy K10 Sport Truck Revival! Is a pontiac center section as olds rear ends of that era? This ratio is 3.08, perfect for cruisin. may be different than pictured. '72 Cougar, '74 Pontiac '49 Plymouth, '61 Chevrolet Impala '65 Cadillac, '66 Buick Wildcat '66-67 Chevrolet Big Car, '72 Charger The housing came in a couple of weeks but without the axles. Popular Tools & Look-Ups. 0000002277 00000 n AXLE DIFF 4X4 FRONT DIFF PARTS AXLE DIFF REAR END PARTS . * Pinion #s GM 40 13 == 67 K D. Rear Suspension Width (Flange to Flange), Donor Vehicles Front and Rear * Ring #s GM 40 13 == 67 - 8 - A. //-->. The high-volume production runs of Ford-9 inch components allow them to be relatively inexpensive. If you noticed the axles are missing you would be correct. But it's been so long I can't be certain. 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 . 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 Bigger engines introduced in both Oldsmobiles and Pontiacs for 1959 prompted the second generation of these rearends with 31-spline axles, which were reportedly 22 percent stronger than the previously used 29-spline shafts. The following information is provided to help you identify the differential you are working on. The '70 to '81 Camaro rear end is 61 inches. 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. '74 Valiant, '57 Ford candidate to replace the torque tube rear end or just get a better set of gears 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. 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. Displays PONTIAC bolt patterns, wheel sizes and dimensions by model or view all matching vehicles that will swap or interchange with PONTIAC wheels. Plywood pieces work well for shims. Underneath the back end of an overwhelming majority of gassers was a 1957-'64 Pontiac/Oldsmobile 9.3-inch differential. $1,825.00. My '64's measure 54.25". Dec 26, 2008. Aftermarket support followed in the form of beefy axles, gears, spools, couplers, and Mickey Thompson's aluminum and magnesium centersections. for highway driving. Under the hood, Pontiac installed a 2.5 . Cylinders. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass. startxref If you're building a period-correct car, especially a Gasser, they are undoubtedly the perfect rearend for today. As a result, many tribute cars and gasser-inspired builds had to stray from correctness. Quick question, I'm looking at a '50 Pontiac and was wondering if it had a torque-tube or a driveshaft. 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. 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. ends with widths ranging from 58"- 62". var I=new Image(1,1); I.src=u; 0000015097 00000 n GM with 7.5 & 7.625 Ring Gears : 1985-1997. may be different than pictured. (rear-wheel drive), automatic 3-speed gearbox . Your Nova should be the same as 67-69. Click the above picture to view full size. 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. 1990 to 1992: 7.625 inch ring gear, 28 spline axle. GU6 - 3.42's Standard manual trans gear ratio. Identified by casting number & number of cover bolts. 0000007740 00000 n I did a quick google search for 65 impala rear end, and 65-66 impala rear end came up a lot. S10. 6 lug rear end 12 bolt Coil spring set up Possible gear ratio's 3.70. Prices and availability are subject Detroit gear & axle : AB : 3.36 : No : Powerglide : Detroit gear & axle : AC : 4.11 : No : 3 speed, O.D . stock from flange to flange it is 60 ". '67 Chevrolet Six Building a gasser is a satisfying way to blast down the track, turn some heads, and salute the good old days of racing. Terms 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. 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 : Shop Full Width; Shop With Sidebar; . '72 Dart 70-81 4wd 6 lug reared 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). They were robust, drop-out-style third members that offered the strength and serviceability racers required. Mavericks 8", All '75-77 6's & 8's 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. 1958-1970 Full size Chevy rear differential identification chart. I placed the order with Speedway motors in late July for my rear end housing and Currie axles. Buick/Olds/Pontiac axles are typically retained with bearings. '70 Duster i've seen that link about a hundred times now and it's kind of funny how the 73-77 GM A-body is not included. 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. My rear is the bolt in axles. |;|tB70t:`!t;?Yp?o^16Y*Ra(k ;6te64^bv n+;:G57@hbM_5 N The early Nova's 62-67 would be about 2" shorter. Outside of flange to outside 54.25" 66 up are wider. cars 6" - 8" for large cars, '71 Colt Rear End Widths - - Back - - Home > Specs > Rear End Widths : Representative for comparison purposes only. also note on the A4's (auto's) shifter console if the gear selector for 1 is missing. Both of these are semi-floating axles. It has an M-21 four speed and I am ready to upgrade the rear diff. May 7, 2009. Pontiac labeled theirs Safe-T-Trac while Oldsmobile called it Anti-Slip. Add Width to So what we are left with is this: A fully capable, period-correct, brute of a differential with complete aftermarket support. GU5 - 3.23's Optional auto trans gear ratio. There have been non C-clip rearends found in Chevelle wagons, and some El Caminos through at least 1974. It has the 4.75" bolt pattern, and ratios are usually 3.55-3.73, but sometimes you'll find a 3.36. The following is a general So why did the Ford 9-inch become the premier differential of modern day hot rodding? . )EgZ(WLlT!c!r~;+{( BRnpX{n>S;;5q N`+UHWF*FA6*BKm)JBw A solid front axle was found under the front of nearly every gasser. Jeremy. 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 Buy in monthly payments with Affirm on orders over $50. This reduced weight and eliminated the stock suspension, producing a spacious engine bay that eagerly accepted the chosen powerplant. 3:08, 3:40, 3:73 Demand exceeded supply, so after several years of planning, designing, and prototyping, Fabcraft Metalworks teamed up with a major U.S. manufacturer to produce a brand new, extreme-duty limited-slip differential for the 9.3-inch called the Trophy Track. Snap On vs Daytona, Pittsburgh, ESCO, Husky, More. manufactured by Pontiac in United States. You must log in or register to reply here. 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 . Factory Width. 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. 62" 64-77 Chevelle, 73-76 Torino, 89 Trans Am. 0000012085 00000 n trailer some Chevy's Dana 44 or Dana 60 with leaf springs 6 lug, Gear ratio's 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 . The following tags will show a 4L80E transmission as an example. I just measured my 60' Pontiac and it is the same as my 62' Pontiac. The pinion shaft diameter is 1.625 inches and will have either 28 or 30 splines. 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 . Contributing information were Bob Welch, J Forbes and various locations throughout the Web and Automotive Magazines. Six-cylinder truck engine block and head casting numbers. Its narrow front end with a plastic, wrapped-around bumper featured fog lights as an option. Drag Racing 101 ~ Everything You Need to Know! hi don, there is no major difference in the pontiac differential from 1949 to 1956 other than rear brake related parts. 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. Look at the RPO codes. 3.08. used a 3.21 Dana 44 used a standard chevy Like the 8.2-inch 10-bolt, the 8.5 10-bolts use C-clips to retain the axles. All Rights Reserved. I actually had the axles in less than 4 days! '64 1/2-'65 Mustang 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. In searching the web I found the following links that have a massive of information on rear end widths and wanted to share. 0000000016 00000 n 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. B-O-P axles also have identifying grooves traveling along each side of . function SiteStats_3379(){ 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. list of rear ends and their dimensions to help narrow the search for a possible For a variety of reasons, not the least of which is the current Gasser craze, Pontiac and Olds rearends are enjoying renewed popularity. 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. 3.21 to 3.92. 1956 and back have 10-spline axles. The most common GM unit for the 1982 to 1992 Camaro is the Saginaw style 10 bolt Chevy differential. It is a little better than the Camaro 8.2 10 bolt. Approximate rear end widths measured from backing plate to backing plate. The Trophy Track's strengthened bearing hubs even use larger-than-stock bearings, the same ones found on spools. There's absolutely no excuse to use the wrong differential in your gasser. Please select a rear end that matches your vehicle below.General Motors has a wide range of front and rear ends! If it has the original Borg Warner posi then it is stronger than the Chevy 10 bolt. GM quit making the 9.3-inch in 1964. (painful to me while driving) I am pretty sure that it is the standard BOP 8.2, 10 bolt. 2/4-door sedan body type. The 8.2" BOP (Buick, Oldsmobile, Pontiac) model is slightly different in that it uses pressed on axle bearings and instead of c-clips . During the production run a third-generation gear case was introduced, oddly enough with slightly smaller pinion bearings, which was probably a cost-cutting move. . Because OE components were still widely used in racing circles, the 9-inch gained traction as a viable alternative, superior to the newer, cheapened, integral-style axles using C-clips and flimsy internals. & Conditions, Ford Mustang II/Pinto & Mercury Capri/Bobcat, Monte Carlo, Regal, etc. sized GM Car, Malibu/Monte Carlo (82 up Metric Studs), 80 Granada & They are also easily modified to suit any chassis. 68-74 Nova, 71-73 Mustang/Cougar, 84-95 Corvette, 60-61" 64-69 1/2 ton 2wd Chevy/ Some GMC Re: Rear end interchangability 1965 to 1967 IMPAL. Approximate rear end widths measured from backing plate to backing plate. 0000008567 00000 n compensate for drums as follows: 4" - '67 Mustang 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 . if you dont have a versailles just a regular 9 inch rear end,, that is also 60 ". This information will change as further information and corrections become available. 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. GU2 - 2.73's Standard auto trans gear ratio. For a better experience, please enable JavaScript in your browser before proceeding. 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. '72 Chrysler. Very hard to find set, being as this is version is not being reproduced. For instance, if both the engine and transmission deliver up to 100 ft./lbs. 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. var t=new Date(); What is the width of a 1959 pontiac rear end? Pontiac/Olds rearends had been widely used full width under Gassers and other cars and even though lots of slingshot dragster pilots had their legs draped over a narrowed version, custom-width rearends were seldom seen in other applications and almost never under a street car. I'm not sure of the June 5, 2022 Posted by: Category: Uncategorized '70 Dodge, '71-77 Maverick 1/4 Mile : 13.1 seconds. Chevy 10 Bolt Rear End Widths. '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 Ironically the heavy-duty nature of the 9.3 worked against it and played a part in its demise. '70's Ford Grenada Posts: 8. lx ?ZXj^|\\(|ka(XKIg#+ . 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. 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.