"SPECIAL" CARS - 1938 Pontiac Special six. For the do-it-yourselfer, Fabcraft offers a full-color manual with excellent tech info on the differential. to change without notice. The Borg-Warner HD rear end was dropped and replaced with the old 7.625 (7 5/8) inch rear end. SKU: CE-GMG7887X. I believe the width, outside axle flange to outside axle flange, is 64 inches. Newest [ January 23, 2023 ] Vintage 1980 Yamaha Enticer Snowmobile Revival to Former Glory Roadkill Powersports GM 10-bolt rear ends have four basic ratio choices: 2.73, 3.08, 3.42, and 3.73 . The housing came in a couple of weeks but without the axles. Willwood Engineering. 0000002038 00000 n '67 Mustang V-8, '69 Firebird '70 Duster (Dart/Duster) with V8&3/4 axle, Table taken from "How to Build 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. . 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. '62 Buick Skylark, '67 Chevrolet Six For a variety of reasons, not the least of which is the current Gasser craze, Pontiac and Olds rearends are enjoying renewed popularity. candidate to replace the torque tube rear end or just get a better set of gears 41/14. Additionally, it can be a relatively affordable way to enjoy a day at the track. Both of these are semi-floating axles. Detroit gear & axle : AB : 3.36 : No : Powerglide : Detroit gear & axle : AC : 4.11 : No : 3 speed, O.D . Wilwood Engineering, Inc. - 4700 Calle Bolero - Camarillo, CA 93012 - (805) 388-1188. 4999 mm / 196.8 in, width: 1854 mm / 73 in, wheelbase: 2746 mm / 108.1 in; reference weights: base curb weight: 1653 kg / 3644 lbs ; . var u='http://50chevy.freeservers.com/cgi-bin/sitestats.gif?p='+escape(location.href)+';r='+escape(document.referrer)+';t='+t.getTime(); Outside of flange to outside 54.25" 66 up are wider. Chrome 10 Bolt Rear End Cover Fits Chevy Pontiac Oldsmobile10 Bolt Differential If in doubt, consult one of our differential experts at (800)510-0950! Under the hood, Pontiac installed a 2.5 . for highway driving. The renewed interest in the P/O 9.3-inch generated high demand for any limited-slip units that were left. 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 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. 0000012085 00000 n <<3d7f7a4e8421a74f9b85ec848848f3a1>]>> I ordering the axles from Bears Performance who kept thier promise of delivery in about a week. Check our the Chevy rear end gear ratio chart above to help you identify the correct gear to use. xref . '72 Cricket All housings have strong, tapered axle tubes, come in numerous widths, and sport a variety of suspension brackets. The intake valve size increased to 2.11" and the exhaust valve increased to 1.77"in size from the previous model. Stop listening to your street rodder buddy and back away from the 9-inch. 6 lug rear end 12 bolt Coil spring set up Possible gear ratio's 3.70. There are three different third-member castings, but all will install into any '57-'64 Pontiac/Olds housing. GU5 - 3.23's Optional auto trans gear ratio. A Chevy 1/2 ton pick-up may have a Chevy 10 bolt rear axle or a 12 bolt rear axle. May 7, 2009. All correct GM codes and part numbers. Copyright 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. 70-81 4wd 6 lug reared Dont Be That Guy, Reversing Gears ~ Rescuing Ones Own Derelict 1967 Pontiac GTO, How To Paint a Lace Roof on the Cheap Using Grandmas Curtains, Exploring an Antique Junkyard in the Hills of West Virginia, Engine, Transmission, Chassis Swap Donor Vehicle Look-Up, Early Ford Beam Axle Identification and Dimensions, How To Box-In a Differential / Solid Axle Rear-End Housing, How To Install aLimited Slip/Posi Unit in a GM 10 Bolt 8.5 Rear-end, How To Install Ring and Pinion Gears in a Ford 8.8 Rear-End, How To Rebuild a GM 10 Bolt Chevy 8.5 Rear End, How To Select Proper Rear-End / Differential Gear Ratio, Popular Automatic Transmission Dimensions, Popular Automatic Transmission Identification Chart, Engine / Transmission / Chassis Donor Search, Project Cars and Part Donor Cars For Sale. note 64 64 axle is same. Hot Rod Blueprints, Drawings and Tech Tips For The Hot Rod Enthusiast!. 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. Floor jack permits you to raise and lower wheels to check for clearance. Its narrow front end with a plastic, wrapped-around bumper featured fog lights as an option. 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. The 10-bolt was used in all the low performance applications. A turbocharger was added to the 301 to give the 1980 Trans Am an injection of performance. '73 Ventura, '73 Mustang, '36 Plymouth, '54-56 Ford Pickup '70's Ford Grenada These smaller volumes and domestic content result in slightly higher prices. 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. function SiteStats_3379(){ June 5, 2022 Posted by: Category: Uncategorized //-->. Mavericks 8", All '75-77 6's & 8's i.e. The high-volume production runs of Ford-9 inch components allow them to be relatively inexpensive. You bring the gumption. Approximate rear end widths measured from backing plate to backing plate. 0000004229 00000 n Is a pontiac center section as olds rear ends of that era? 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. 0000005198 00000 n It'll help you sniff out the right parts and will walk you through building the differential for your gasser project. Terms '67 Chevrolet big car ). Jeremy. 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. Rim Width Measure from the inside of the outer lip at the bead seating point to the inner lip. 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. Like the 8.2-inch 10-bolt, the 8.5 10-bolts use C-clips to retain the axles. /** * Error Protection API: WP_Paused_Extensions_Storage class * * @package * @since 5.2.0 */ /** * Core class used for storing paused extensions. 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 . Good third-member cores are also relatively easy to come by, as many are now being saved from recyclers by fellow enthusiasts. Richmond Gear calls the 57-64 Olds/Pontiac rear a GM 9.3" Axle (the ring gear is 9.3 inches). Factory Width. manufactured by Pontiac in United States. Billet-steel yokes and carrier caps could be added to make the 9.3-inch nearly bomb-proof. '72 Dart Pontiac labeled theirs Safe-T-Trac while Oldsmobile called it Anti-Slip. A solid front axle was found under the front of nearly every gasser. Add Width to compensate for drums as follows: 4" - 5" for small cars 5" - 6" for intermediate cars 6" - 8" for large cars . Someone may correct me, but as I recall 1959 was the first year for the "Wide Track" Pontiac. On Gen1, the code is "hit" on the right side of the rear axle (passenger side) with the inscriptions facing the front of . The following is a general But the components should at least be grounded in the era. 66-69 axle does not include 64 65 . plate to backing plate. lx ?ZXj^|\\(|ka(XKIg#+ Buy in monthly payments with Affirm on orders over $50. Estimated Lead Time: 5-Days. 0000000911 00000 n B. "" "" ". Model. The new P/O 9.3-inch immediately found its way into hot rods and race cars. 0000001644 00000 n Part Number: YGA-21289. 0 I'm running the wider blazer rear end . Cylinders. 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. 3:08, 3:40, 3:73 If you're building a period-correct car, especially a Gasser, they are undoubtedly the perfect rearend for today. All but a few of the old factory limited-slips had been gathered up and beaten to death. J.T. Its role in drag racing was limited to primarily Stock, Super Stock, and Factory Experimental Fords. 0000003369 00000 n 1957-58 are 29-spline and 1959-1964 are 31 spline. The Rochester Quadrajet carburetor was featured on the top spec GTO. "Stovebolt" Specifications. In 1957, the Pontiac and Oldsmobile designs were combined and improved upon, producing a brand new 9.3-inch differential. 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. 0000001170 00000 n Rusty but Rare 1976 Chevy K10 Sport Truck Revival! GU3 - 3.08's V6 gear ratio. And even though new internals were available from Fabcraft, the carriers were simply becoming too difficult to find. Six rib cases will be found on '57 and '58 rearends, '59-64s have seven ribs. They were tough with 9.3-inch ring gears, big pinion shafts, and large-diameter bearings and tough axles. What is the width of a 1959 pontiac rear end? I have heard that a 1st gen Pontiac Firebird rear is wider, but I am not sure by how much. stock from flange to flange it is 60 ". Dont Be That Guy, Reversing Gears ~ Rescuing Ones Own Derelict 1967 Pontiac GTO, How To Paint a Lace Roof on the Cheap Using Grandmas Curtains, Exploring an Antique Junkyard in the Hills of West Virginia, Engine, Transmission, Chassis Swap Donor Vehicle Look-Up, Early Ford Beam Axle Identification and Dimensions, How to Apply Rust Encapsulator Plus to a Rusty Rear End, How To Box-In a Differential / Solid Axle Rear-End Housing, How To Select Proper Rear-End / Differential Gear Ratio, Wheelbase Measurements for Popular Classic Cars, 1955 Chevrolet 3100 Step Side Pickup Truck Build, How To Cut Your Long Bed to a Short Bed in a Weekend, Engine / Transmission / Chassis Donor Search, Project Cars and Part Donor Cars For Sale. '72-75 Datsun Pickup 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. '68 AMX Why not a Ford? '69 Nova 0000009416 00000 n The following information is provided to help you identify the differential you are working on. It has been my experience that the 66 up axle is longer. And yet, all too often, a beautiful gasser built today is sitting on top of a Ford 9-inch axle. Prices and availability are subject 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 $20, 1928 Ford Model A Coupe Goes From Yard Art To Driver, How To Turn Railroad Track into a DIY Homemade Anvil, New Docu-Series from Rat Rod Magazine ~ American Rust, Finishing a Late Friends Handmade 1956 Baby Buick Special Mini Car, Best 3-Ton Floor Jack? I used 5" long lag bolts to hold the end pieces of wood on which permitted me to add up to 1.5" of shims to each end. My '64's measure 54.25". note 64 64 axle is same. Quality and service was excellent. '55 -57 Chevrolet, 68-69 Fair lane 6 or 8 It is a little better than the Camaro 8.2 10 bolt. Your Nova should be the same as 67-69. Terms of Service. The other drawback is that you can only check for clearance at the height the jack stands are set to. The 1965 Pontiac Tempest LeMans measures 74.40 inches in width, The 1965 Pontiac Tempest LeMans measures 206.20 inches in length, and has a wheelbase of 115.00 inches. . I cut two axle flanges from a couple of short pieces of wood and then used 3/8 lag bolts to attach them to the longer center portion of the rear axle. Originally posted by SUNNYD @Mar 22 2007, 10:23 PM~7534589. i know in 1956 the pontiac dual range hydra-matic got a different driveshaft yoke. The two makes used very similar differentials through the mid-'40s and into the '50s. Learn more. A: They came in all fullsize Pontiacs and Oldsmobiles from 1957-64. '66-67 Chevrolet Big Car, '72 Charger Dec 26, 2008. This reduced weight and eliminated the stock suspension, producing a spacious engine bay that eagerly accepted the chosen powerplant. 3.08. Chevy 10 Bolt Rear End Widths. Here you can see the three white paint splotches identifying the pinion size and the gears. I did a quick google search for 65 impala rear end, and 65-66 impala rear end came up a lot. Wilwood Engineering designs and manufactures high-performance disc brake systems. Good luck. Grand Prix. Picture is from parts book. HVr0*u9$K;IG]&U&"x\s. JavaScript is disabled. trailer M&M CUSTOM. '72 Cougar, '74 Pontiac '49 Plymouth, '61 Chevrolet Impala '65 Cadillac, '66 Buick Wildcat '66-67 Chevrolet Big Car, '72 Charger Rusty but Rare 1976 Chevy K10 Sport Truck Revival! The 1967 GTO came in 3 speed Automatic and a 4 Speed manual. No one is making new 31-spline side gears at this time, which is not good. may be different than pictured. 60" 60's GMC and hi don, there is no major difference in the pontiac differential from 1949 to 1956 other than rear brake related parts. . Task Force width ranges at this time. '69 Oldsmobile 88, '72 Chrysler 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. 40/13. %%EOF Length, GM 8.2 in. There have been non C-clip rearends found in Chevelle wagons, and some El Caminos through at least 1974. Check here to see if your engine is correct for your year truck. 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 " "" "" ". [ July 26, 2022 ] Reversing Gears ~ Rescuing One's Own Derelict 1967 Pontiac GTO Builds and Examples [ July 24, 2022 ] . '69 Javelin Six , '70 dodge So what we are left with is this: A fully capable, period-correct, brute of a differential with complete aftermarket support. 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 Rey Payumo of Kailua, Hawaii found this 1963 Chevrolet Impala packed with junk in a garage in Hayward, California. )EgZ(WLlT!c!r~;+{( BRnpX{n>S;;5q N`+UHWF*FA6*BKm)JBw Snap On vs Daytona, Pittsburgh, ESCO, Husky, More. '72 Charger var I=new Image(1,1); I.src=u; Rear-end questions. Compared side-by-side with the Chrysler, it boasted stronger gears and larger bearings. For a better experience, please enable JavaScript in your browser before proceeding. The following tags will show a 4L80E transmission as an example. 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 . (Rear Wheel Drive) +20 offset. ?|-Zce14^nF%67( }fSRaQfqX?|{8{>? VX5EX=b :"-'k>.VbyV^-nWxv-WgUtpo>sMhlI4ZV<4+s>|2k>\x{7M^^x. 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 . Year. 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. 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. 5E med-duty 4-pinion. '69 Javelin Six, '39 -48 Chevrolet Compared to the Ford, the P/O parts were more expensive. I came up with a cheap simple method to confirm the results of the measurement taken with the loose wheels. 62" 64-77 Chevelle, 73-76 Torino, 89 Trans Am. some sources state that the 67 and latter are wider. 1958-1970 Full size Chevy rear differential identification chart. Vintage 1980 Yamaha Enticer Snowmobile Revival to Former Glory. also note on the A4's (auto's) shifter console if the gear selector for 1 is missing. 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. '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 Many aftermarket options exist with all of the appropriate mount points. pontiac rear end width chart . Drag Racing 101 ~ Everything You Need to Know! Vehicle. For instance, if both the engine and transmission deliver up to 100 ft./lbs. I actually had the axles in less than 4 days! The new 9.3-inch provided outstanding durability when subjected to abuse from all classes of race cars, including Top Fuel. '70 Nova 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 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.
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