No one is making new 31-spline side gears at this time, which is not good. JavaScript is disabled. The following tags will show a 4L80E transmission as an example. 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 . Both of these are semi-floating axles. 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. I've read enough times that '64/'65 are 54.25" and '66's are an inch wider that I believe it. The correct width for 59' & 60' is 63-1/4" I believe. Approximate rear end widths measured from backing plate to backing plate. According to published lists, the 55-64 Chevrolet rear end width is 60" from wheel mount surface to wheel mount surface. Automotive Technical and Reference Information, Project Cars, Trucks and Salvage Vehicles For Sale. 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. Rusty but Rare 1976 Chevy K10 Sport Truck Revival! 1958-1970 Chevy Rear Differential code Identification : Using the charts below, you will be able to learn alot about the rear differential in your classic full size Chevy. * Ring #s GM 40 13 == 67 - 8 - A. 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. Several years later, the popularity of this almost deceased differential was rapidly swelling. 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. My 69 gto convert., purchased within the last year has a painful 2.56 rear gear. Forbes and various locations throughout the Web and Automotive Magazines. also note on the A4's (auto's) shifter console if the gear selector for 1 is missing. 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. . Contributing information were Bob Welch, J Forbes and various locations throughout the Web and Automotive Magazines. $5 Off Your $100 Mobile App Purchase . Here you can see the three white paint splotches identifying the pinion size and the gears. 57" 71-74 V-8 hi don, there is no major difference in the pontiac differential from 1949 to 1956 other than rear brake related parts. For a better experience, please enable JavaScript in your browser before proceeding. 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. It is now late November and I still do not have my axles. 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. Mercury Capri/Bobcat, Monte Carlo, Regal, etc. The two makes used very similar differentials through the mid-'40s and into the '50s. SiteStats_3379(); And yet, all too often, a beautiful gasser built today is sitting on top of a Ford 9-inch axle. Drag Racing 101 ~ Everything You Need to Know! The1971-'72 Buick GS/Skylark and Olds Cutlass A-body 8.5 10 bolt did not have C-clip axles. 3.08. All housings have strong, tapered axle tubes, come in numerous widths, and sport a variety of suspension brackets. 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 " "" "" ". candidate to replace the torque tube rear end or just get a better set of gears Product By Category; Products By SKU/ID; . "Stovebolt" Specifications. Year. Rear-end questions. The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Rear Wheel: Production Years for Series : 1964 - 1967 : Price : $2,437-$3,095: Weight : 3015 lbs | 1367.581 kg: Performance. The intake valve size increased to 2.11" and the exhaust valve increased to 1.77"in size from the previous model. As the popularity of the Ford 9-inch increased the P/O 9.3 began to fade from the scene. 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 . ZE reg-duty / 4E med-duty 4-pinion. 59" 68-83 Corvette , 67-70 Mustang/Cougar/Fairlane, 60" 55-64 Chevy '65 Cadillac, '66 Buick Wildcat Actual wheel track could be as much as 6" to 8"depending on drum size: '67 to '70 Mustang/Cougar 6 cyl. The high-volume production runs of Ford-9 inch components allow them to be relatively inexpensive. The final drive ratio is identified with 2 or 3 letters codes. The 301 was Pontiac's only V-8 left in production by 1979. '55 -57 Chevrolet, 68-69 Fair lane 6 or 8 July 30, 2004 11:23PM. Please select a rear end that matches your vehicle below.General Motors has a wide range of front and rear ends! Six rib cases will be found on '57 and '58 rearends, '59-64s have seven ribs. I actually had the axles in less than 4 days! 5" for small cars 5" - 6" for intermediate On Gen1, the code is "hit" on the right side of the rear axle (passenger side) with the inscriptions facing the front of . 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. 0000000716 00000 n 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? Rear axle flange to flange is supposedly wider than the 68-72 AND the 78-88 GM A and G body cars. 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. 0000001170 00000 n Quick question, I'm looking at a '50 Pontiac and was wondering if it had a torque-tube or a driveshaft. Needle BUILD IT YOURSELF - PARTS LISTS BUSHINGS TO ADAPT TUBE SIZE . lx ?ZXj^|\\(|ka(XKIg#+ 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. Building a gasser is a satisfying way to blast down the track, turn some heads, and salute the good old days of racing. Is a pontiac center section as olds rear ends of that era? Thanks to the efforts of the Fabcraft Metalworks crew all the parts necessary to rebuild one are available along with a selection of improved components and special tools to make working on them easier. '72 Dart to change without notice. 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. 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. Pontiac labeled theirs Safe-T-Trac while Oldsmobile called it Anti-Slip. 68-74 Nova, 71-73 Mustang/Cougar, 84-95 Corvette, 60-61" 64-69 1/2 ton 2wd Chevy/ Some GMC 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. Calculating the torque multiplication that your axle gears provide is quite easy. Pontiacs had 1.75-inch-wide drums in 1957-58 while Olds used 2-inch from 1959-on, both used 2-inch brakes. Originally posted by SUNNYD @Mar 22 2007, 10:23 PM~7534589. 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. How to cut your Ford F100 long bed to short bed in a weekend DIY project ~ Two-Part video details cutting frame and bed. For instance, if both the engine and transmission deliver up to 100 ft./lbs. Prices and availability are subject The Trophy Track's strengthened bearing hubs even use larger-than-stock bearings, the same ones found on spools. 62" 64-77 Chevelle, 73-76 Torino, 89 Source for tire and wheel application fitment data. Post: rear end width chart (Topic#173541) greg pharr Contributor Posts: 897 Loc: North Mississippi Reg: 07-09-03. 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. The 8.2" BOP (Buick, Oldsmobile, Pontiac) model is slightly different in that it uses pressed on axle bearings and instead of c-clips . The P/O rearend and parts were getting harder to find and there were more Ford 9-inchers being made every day. The following information is provided to help you identify the differential you are working on. find the 1/2 ton size yoke on a dana 60. 71- Newer 2wd trucks use a 5 on 5 lug pattern '67 Mustang V-8, '69 Firebird What I did is shown below in the photos. If in doubt, consult one of our differential experts at (800)510-0950! In head/2 per cylinder. %%EOF for highway driving. Posts: 8. Learn more. while a folding bench was standard for the rear passengers. AXLE DIFF 4X4 FRONT DIFF PARTS AXLE DIFF REAR END PARTS . Housings with leaf springs were used under Pontiac and Olds in 1957 and Olds only in 1958-60; Pontiacs had coil . B. Identified by casting number & number of cover bolts. 0000007740 00000 n '67 Mustang Six , '68 AMX 4.24 out of 5 stars. These dimensions do not include brake drums and are measured from backing plate to backing plate. } There's absolutely no excuse to use the wrong differential in your gasser. '68 AMX 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. 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 '72 Chrysler. 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. 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. Plywood pieces work well for shims. 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. Wilwood Engineering designs and manufactures high-performance disc brake systems. Approximate rear end widths measured from backing Part Number: YGA-21289. PY Online Forums - Bringing the Pontiac Hobby Together, Classic TECH- specs, codes, resto issues FORUMS. But the components should at least be grounded in the era. Cylinders. with 10 bolt axle. Aftermarket support followed in the form of beefy axles, gears, spools, couplers, and Mickey Thompson's aluminum and magnesium centersections. . Below matches. 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. Rey Payumo of Kailua, Hawaii found this 1963 Chevrolet Impala packed with junk in a garage in Hayward, California. 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. "" "" ". 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? Currie Centurion Housing - Classic notchback looks in a new, high-strength, American-made housing, that features 3-inch diameter axle tubes, and CNC machined face flange, for a flat leak-free . Find your GMC/Chevy vehicle in the chart below and click on the illustration for a larger view. '71 - 72 Pinto My rear is the bolt in axles. GU6 - 3.42's Standard manual trans gear ratio. '71 Comet Why not a Ford? The Firebird rear end would have been a BOP 8.2 10 bolt. '73 Ventura, '65 Ram American They are also easily modified to suit any chassis. '72 Charger The 10-bolt was used in all the low performance applications. You must log in or register to reply here. Picture is from parts book. GU5 - 3.23's Optional auto trans gear ratio. note 64 64 axle is same. However, the 9.3-inch differential was saved from obsolescence by a Texas-based company called Fabcraft Metalworks and its owner, Brad Duerst. Like most american muscle cars of the Day the Pontiac GTO was a front engined rear wheel driven car. note 64 64 axle is same. 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. <<3d7f7a4e8421a74f9b85ec848848f3a1>]>> All but a few of the old factory limited-slips had been gathered up and beaten to death. 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 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 . 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 They're tough, right? 1990 to 1992: 7.625 inch ring gear, 28 spline axle. 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. The S10 10bolt 7.5/7.625" rear end is a good choice for the light low to medium horsepower small block cars. %PDF-1.4 % Stop listening to your street rodder buddy and back away from the 9-inch. So what we are left with is this: A fully capable, period-correct, brute of a differential with complete aftermarket support. @`AWG^8J>4j|^Vk@oXq7@@/9ep 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. For many years prior, Olds and Pontiac differentials had been a dominant rear axle in drag racing and other motorsports. 0000015097 00000 n 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. Registered: 16 years ago. What is the width of a 1959 pontiac rear end? 0000003369 00000 n 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. Popular Automatic Transmission Identification Chart; Rear-End Widths of Classic American Cars; Follow Us on Flipboard . I guess 66 will work too, but I don't have any way to verify this, nor any more information for you. Numerous e-mails and phone calls, stories of lost and found axles finally resulted in an e-mail from Speedway motors November 22nd apologizing for not handling this order in a timely manner and that a refund would be sent today. Other changes were made to the limited-slip carrier, but strength was not adversely affected. 41/14. 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. 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. CK 15/35, S10, RV. Willwood Engineering. Terms 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 . If you noticed the axles are missing you would be correct. manufactured by Pontiac in United States. User Info. Automotive Technical and Reference Information, Project Cars, Trucks and Salvage Vehicles For Sale. 0000012085 00000 n //-->. Lincoln Versailles, Regal with 10 bolt axle, S-10 P.U., 65-67 Nova. 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. $1,825.00. Click the above picture to view full size. "SPECIAL" CARS - 1938 Pontiac Special six. 1985 to 1989: 7.625 inch ring gear, 26 spline axle. Q: What cars did they originally come in? Interest in vintage drag racing is now approaching a rapid boil. Professional technical support is available . jack39rdstr # 169783 04/02/10 02:03 PM. Task Force width ranges at this time. The Pontiac/Oldsmobile 9.3-inch is your axle. %twE_( H@v7H f)p* 0KO|O n>+ '66-67 Chevrolet Big Car, '72 Charger The non C-clip 8.5" 10 bolt, type "C" rearend was used in some 1969-'72 Pontiac GP and 1970-'72 Monte Carlo. Quality and service was excellent. The Olds and Pontiac both used the same center section. SKU: CE-GMG7887X. Billet-steel yokes and carrier caps could be added to make the 9.3-inch nearly bomb-proof. 0000001291 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. What is the width of a 1959 pontiac rear end? 66-69 axle does not include 64 65 . 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 While the Ford 9-inch is the perceived benchmark of popular rearends today, in stock form the edge would go to the Pontiac/Olds. 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. Dec 20, 2007. Snap On vs Daytona, Pittsburgh, ESCO, Husky, More. 1956 and back have 10-spline axles. Look at the RPO codes. Compared side-by-side with the Chrysler, it boasted stronger gears and larger bearings. It has been my experience that the 66 up axle is longer. B-O-P axles also have identifying grooves traveling along each side of . '72 Cougar, '74 Pontiac, '49 Plymouth, '61 Chevrolet Impala To say I was disappointed by the service provided by this company would be an understatement. 5E med-duty 4-pinion. Drag Racing 101 ~ Everything You Need to Know! By designing ring-and-pinion sets to fit the previously less-attractive, but more available, Series II OE carriers, performance ratios could now be utilized without the need for an unfavorable ring-gear spacer. The 78-88 mid size GM cars use a 7.5" 10 bolt, which is about 58/5" wide. It'll help you sniff out the right parts and will walk you through building the differential for your gasser project. In 1957, the Pontiac and Oldsmobile designs were combined and improved upon, producing a brand new 9.3-inch differential. GMC V-6 1958-1970 Full size Chevy rear differential identification chart. Casting # Year: Body: Size: Notes: 2070051: 1960 - 71: A . 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. 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. Chrome 10 Bolt Rear End Cover Fits Chevy Pontiac Oldsmobile10 Bolt Differential Picture is from parts book. Rusty but Rare 1976 Chevy K10 Sport Truck Revival! Vehicles with Similar . There is also a yellow stamp 10 22 which is the . You can do this by multiplying by the gear ratio. . )EgZ(WLlT!c!r~;+{( BRnpX{n>S;;5q N`+UHWF*FA6*BKm)JBw J.T. I placed the order with Speedway motors in late July for my rear end housing and Currie axles. startxref A turbocharger was added to the 301 to give the 1980 Trans Am an injection of performance. Correct two piece design posi unit, exact for only 67 - 69 Firebird 10 bolt 8.2 rears. Dec 26, 2008. 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. trailer ends with widths ranging from 58"- 62". Rear Suspension Width (Flange to Flange), Donor Vehicles Front and Rear with 10 bolt axle, "A" body ?|-Zce14^nF%67( }fSRaQfqX?|{8{>? VX5EX=b :"-'k>.VbyV^-nWxv-WgUtpo>sMhlI4ZV<4+s>|2k>\x{7M^^x. may be different than pictured. I have heard that a 1st gen Pontiac Firebird rear is wider, but I am not sure by how much. The dana pinion stands forward about 2" more than the 9 1/4, the driveshaft will need to be shortened accordingly. Your Nova should be the same as 67-69. var u='http://50chevy.freeservers.com/cgi-bin/sitestats.gif?p='+escape(location.href)+';r='+escape(document.referrer)+';t='+t.getTime(); '70 Dodge, '71-77 Maverick A Chevy 1/2 ton pick-up may have a Chevy 10 bolt rear axle or a 12 bolt rear axle. 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 : Several features are common to most gassers. Ironically the heavy-duty nature of the 9.3 worked against it and played a part in its demise. used a 3.21 Dana 44 used a standard chevy getting back to the differential, why bill didn't cover 1956 i don't know, might have just been a typo or overlooked. But when it came to rearends, the overwhelming favorites were those our of '57-64 Pontiacs and Oldsmobiles. You are using an out of date browser. 100 x 4.12. may be different than pictured. In searching the web I found the following links that have a massive of information on rear end widths and wanted to share. '72-75 Datsun Pickup But it's been so long I can't be certain. but the body with is 1" wider on 66-67. 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 '67 Chevrolet big car 1982 to 1984: 7.5 inch ring gear, 26 spline axle. Floor jack permits you to raise and lower wheels to check for clearance. 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 Q: Why do Pontiac/Olds 9.3 parts cost more than those for a Ford 9-inch? Accurate Differential Identification is the first and most important step in your differential repair, upgrade or overhaul project. 3.21 to 3.92. Dick this in no way reflects upon your statement but you make an excelent point when you stated " I read enough times that". 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. 2/4-door sedan body type. 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. Rear axle widths. Underneath the back end of an overwhelming majority of gassers was a 1957-'64 Pontiac/Oldsmobile 9.3-inch differential. 2D reg-duty / 4D med-duty 4-pinion. It has an M-21 four speed and I am ready to upgrade the rear diff. HVMo0WJ~H|V`-e)6`!$)=-~6x@h1|o '69 Dodge Van, '71 Torino 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. The 1967 GTO came in 3 speed Automatic and a 4 Speed manual. xb```"~> !%1#XY} P A1@G7L/^nkX,i{j^vL@l ` n Today finding a P/O 9.3 may take some searching and it's helpful to know what to look for. Valves. '66 Falcon, '69 Chevrolet '70's Ford Grenada In this 489 case it is 3:91 gears and a 1 7/8 pinion. GM with 7.5 & 7.625 Ring Gears : 1985-1997.
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