pontiac rear end width chart

Building an example that truly reflects what was around back then takes a certain passion for correctness. Once I had determined the desired width with the loose wheels and tape measure I constructed a wood rear end out of a 2x4. Good third-member cores are also relatively easy to come by, as many are now being saved from recyclers by fellow enthusiasts. 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. And yet, all too often, a beautiful gasser built today is sitting on top of a Ford 9-inch axle. 68-74 Nova, 71-73 Mustang/Cougar, 84-95 Corvette, 60-61" 64-69 1/2 ton 2wd Chevy/ Some GMC The housing came in a couple of weeks but without the axles. All housings have strong, tapered axle tubes, come in numerous widths, and sport a variety of suspension brackets. (Dart/Duster) with V8&3/4 axle, Table taken from "How to Build 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. Underneath the back end of an overwhelming majority of gassers was a 1957-'64 Pontiac/Oldsmobile 9.3-inch differential. Popular Automatic Transmission Identification Chart; Rear-End Widths of Classic American Cars; Follow Us on Flipboard . 70 2wd 6 lug rear end 12 bolt Possible gear ratio's 1940 engine numbers run 2697268 through 3665902. 0000015097 00000 n 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 Dick this in no way reflects upon your statement but you make an excelent point when you stated " I read enough times that". Compared side-by-side with the Chrysler, it boasted stronger gears and larger bearings. 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. So why did the Ford 9-inch become the premier differential of modern day hot rodding? Items 0000006915 00000 n 0000001291 00000 n 6 lug rear end 12 bolt Coil spring set up Possible gear ratio's 3.70. B-O-P axles also have identifying grooves traveling along each side of . compensate for drums as follows: 4" - '72-73 Torino, STOCK CENTER TO CENTER SPRING PERCH DISTANCE, '69 Chevrolet I am using a 62' Olds rear in my 61' Bel Air and it is 1" wider that the stock Bel Air rear. Quality and service was excellent. 5D med-duty 4-pinion. used a 3.21 Dana 44 used a standard chevy "" "" ". Originally posted by SUNNYD @Mar 22 2007, 10:23 PM~7534589. A: Extremely strong! Rear End Widths - - Back - - Home > Specs > Rear End Widths : Representative for comparison purposes only. 0000000716 00000 n Add Width to So what we are left with is this: A fully capable, period-correct, brute of a differential with complete aftermarket support. In 1957, the Pontiac and Oldsmobile designs were combined and improved upon, producing a brand new 9.3-inch differential. 0000009416 00000 n Drag Racing 101 ~ Everything You Need to Know! '41 -48 Ford, '68-72 Chevelle The power is transmitted to the road by the rear . HVr0*u9$K;IG]&U&"x\s. /** * Error Protection API: WP_Paused_Extensions_Storage class * * @package * @since 5.2.0 */ /** * Core class used for storing paused extensions. BOP, Pontiac, Each. 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. Building a gasser is a satisfying way to blast down the track, turn some heads, and salute the good old days of racing. 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 . 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. Click the above picture to view full size. Vehicle. ). Six-cylinder truck engine block and head casting numbers. Automotive Technical and Reference Information, Project Cars, Trucks and Salvage Vehicles For Sale. Rear Wheel: Production Years for Series : 1964 - 1967 : Price : $2,437-$3,095: Weight : 3015 lbs | 1367.581 kg: Performance. A: They came in all fullsize Pontiacs and Oldsmobiles from 1957-64. Mavericks 8", All '75-77 6's & 8's Understanding Aluminum Heads and Spark Plugs, OK Go Needing/Getting ~ Its All In The Timing, An Online Magazine for DIY Hot Rod Builders. '69 Firebird Chevy 10 Bolt Rear End Widths. For instance, if both the engine and transmission deliver up to 100 ft./lbs. It is a little better than the Camaro 8.2 10 bolt. Floor jack permits you to raise and lower wheels to check for clearance. 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. For die-hard purists, it soon became a difficult proposition to build a worthy P/O 9.3-inch as aftermarket support subsided and the supply of virgin factory parts withered. Billet-steel yokes and carrier caps could be added to make the 9.3-inch nearly bomb-proof. Rey Payumo of Kailua, Hawaii found this 1963 Chevrolet Impala packed with junk in a garage in Hayward, California. I'm running the wider blazer rear end . The intake valve size increased to 2.11" and the exhaust valve increased to 1.77"in size from the previous model. A solid front axle was found under the front of nearly every gasser. 0000006068 00000 n 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. Is a pontiac center section as olds rear ends of that era? 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 . Engine Numbers. . Axle Images: Axle Details. Estimated Lead Time: 5-Days. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. )EgZ(WLlT!c!r~;+{( BRnpX{n>S;;5q N`+UHWF*FA6*BKm)JBw Beginning with a new line of U.S.-made gearsets in desirable ratios, Fabcraft rekindled the flickering flame of the 9.3-inch. note 64 64 axle is same. manufactured by Pontiac in United States. This 1955 Chevrolet 3100 Step Side Pickup Truck was built by the Hot Rod Factory, Minnesotas premier hot rod shop and muscle car restoration facility. J.T. '69 Javelin Six, '39 -48 Chevrolet RWD (rear-wheel drive), automatic 4-speed gearbox. 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. 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. The Pontiac/Oldsmobile 9.3-inch is your axle. They are also easily modified to suit any chassis. The following list 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? Detroit gear & axle : AB : 3.36 : No : Powerglide : Detroit gear & axle : AC : 4.11 : No : 3 speed, O.D . '72 Chrysler. may be different than pictured. M&M CUSTOM. 0000001170 00000 n 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 . L = Low - Zero to Negative Offset, Offset typically RWD (Rear . 70-81 4wd 6 lug reared 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. JavaScript is disabled. Popular Tools & Look-Ups. getting back to the differential, why bill didn't cover 1956 i don't know, might have just been a typo or overlooked. The Rochester Quadrajet carburetor was featured on the top spec GTO. '66 Falcon, '69 Chevrolet '67 Mustang 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. 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. But the components should at least be grounded in the era. Jeff Smith: When Chevrolet built the first Camaros in 1967, they were already in production of both 10- and 12-bolt rear-end housings. 0000002038 00000 n 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 : As a result, many tribute cars and gasser-inspired builds had to stray from correctness. Source for tire and wheel application fitment data. 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 . Brand new gears in ratios from 3.42 through 5.38 could be purchased and mounted on a new forged-steel spool with 31- or 35-spline axles. The following is a general list of rear ends and their dimensions to help narrow the search for a possible candidate to replace the torque tube rear end or just get a better set of gears for highway driving. 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. 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. Quick question, I'm looking at a '50 Pontiac and was wondering if it had a torque-tube or a driveshaft. if you dont have a versailles just a regular 9 inch rear end,, that is also 60 ". pontiac rear end width chart . 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 Snap On vs Daytona, Pittsburgh, ESCO, Husky, More. If you noticed the axles are missing you would be correct. There's absolutely no excuse to use the wrong differential in your gasser. Product By Category; Products By SKU/ID; . stock from flange to flange it is 60 ". But it's been so long I can't be certain. Displays PONTIAC bolt patterns, wheel sizes and dimensions by model or view all matching vehicles that will swap or interchange with PONTIAC wheels. 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. Rusty but Rare 1976 Chevy K10 Sport Truck Revival! Rear-end track width measurements of classic American cars including Chevrolet, Ford, and Mopar vehicle rear axle widths. ends with widths ranging from 58"- 62". 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. 3.08. to change without notice. And even though new internals were available from Fabcraft, the carriers were simply becoming too difficult to find. But when it came to rearends, the overwhelming favorites were those our of '57-64 Pontiacs and Oldsmobiles. Approximate rear end widths measured from backing plate to backing plate. Plywood pieces work well for shims. %%EOF Outside of flange to outside 54.25" 66 up are wider. Chrysler sent out the last of its 8.75-inch rearends in the early '70s. Copyright 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. The 1967 GTO came in 3 speed Automatic and a 4 Speed manual. While the Ford 9-inch is the perceived benchmark of popular rearends today, in stock form the edge would go to the Pontiac/Olds. 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. The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. 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 . 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. To say I was disappointed by the service provided by this company would be an understatement. '70's Ford Grenada Very hard to find set, being as this is version is not being reproduced. '72-75 Datsun Pickup '72 Cougar, '74 Pontiac '49 Plymouth, '61 Chevrolet Impala '65 Cadillac, '66 Buick Wildcat '66-67 Chevrolet Big Car, '72 Charger 5E med-duty 4-pinion. The correct width for 59' & 60' is 63-1/4" I believe. Look at the RPO codes. The P/O rearend and parts were getting harder to find and there were more Ford 9-inchers being made every day. well i have 1 from f 150 82 b/plate 2 b/plate it is 58". It has been my experience that the 66 up axle is longer. while a folding bench was standard for the rear passengers. Rim Width Measure from the inside of the outer lip at the bead seating point to the inner lip. 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. 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The '70 to '81 Camaro rear end is 61 inches. Someone may correct me, but as I recall 1959 was the first year for the "Wide Track" Pontiac. "Hy-Tuff" axles are available for it from Moser and Mark Williams in any length (needed to . You are using an out of date browser. 1958-1970 Full size Chevy rear differential identification chart. 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. Posts: 8. Suspension Width (Flange to Flange), Ford Mustang II/Pinto & the wider housing is not 1" closer to 3/4 . For the do-it-yourselfer, Fabcraft offers a full-color manual with excellent tech info on the differential. 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 two makes used very similar differentials through the mid-'40s and into the '50s. 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. Shop Full Width; Shop With Sidebar; . SKU: CE-GMG7887X. 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. 100 x 4.12. '72 Cricket 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 . 0000002277 00000 n The following tags will show a 4L80E transmission as an example. '62 Buick Skylark, '67 Chevrolet Six They were robust, drop-out-style third members that offered the strength and serviceability racers required. 62" 64-77 Chevelle, 73-76 Torino, 89 My '64's measure 54.25". 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. 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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. 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. i.e. Prices and availability are subject 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. . 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. '71 Comet '74 Valiant, '57 Ford This number may be on the top, bottom, or either side of the axle shaft. 0000002004 00000 n [ July 26, 2022 ] Reversing Gears ~ Rescuing One's Own Derelict 1967 Pontiac GTO Builds and Examples [ July 24, 2022 ] . . some sources state that the 67 and latter are wider. Model. Part Number: YGA-21289. '65 Cadillac, '66 Buick Wildcat Mopar Rear Axle. Buick and Pontiac 10-bolt rear ends used flange-retained axles instead of the C-clip retained axles like those on Chevrolet rears. '69 Javelin Six , '70 dodge %PDF-1.4 % A Chevy 1/2 ton pick-up may have a Chevy 10 bolt rear axle or a 12 bolt rear axle. 3.21 to 3.92. Its pretty easy to find a good one if you are in an area with a few junkyards. Actual wheel track could be as much as 6" to 8"depending on drum size: '67 to '70 Mustang/Cougar 6 cyl. It's not to the same level as a concours-correct restoration; no judge will deduct points for an incorrect paint code. How To Box-In a Differential / Solid Axle Rear-End Housing; . There have been non C-clip rearends found in Chevelle wagons, and some El Caminos through at least 1974. Identified by casting number & number of cover bolts. It'll help you sniff out the right parts and will walk you through building the differential for your gasser project. Newest [ January 23, 2023 ] Vintage 1980 Yamaha Enticer Snowmobile Revival to Former Glory Roadkill Powersports Diagram. Add Width to compensate for drums as follows: 4" - 5" for small cars 5" - 6" for intermediate cars 6" - 8" for large cars . GU5 - 3.23's Optional auto trans gear ratio. Ford continued cranking out the 9-inch in vast quantities well into the '80s. All correct GM codes and part numbers. You're building a gasser. Will only work with bolt in style axles. These dimensions do not include brake drums and are measured from backing plate to backing plate. ZE reg-duty / 4E med-duty 4-pinion. '69 Oldsmobile 88, '72 Chrysler Rear-end questions. You can do this by multiplying by the gear ratio. Drag Racing 101 ~ Everything You Need to Know! sized GM Car, Malibu/Monte Carlo (82 up Metric Studs), 80 Granada & Casting # Year: Body: Size: Notes: 2070051: 1960 - 71: A . Prices and availability are subject Richmond Gear calls the 57-64 Olds/Pontiac rear a GM 9.3" Axle (the ring gear is 9.3 inches). The early Nova's 62-67 would be about 2" shorter. Six rib cases will be found on '57 and '58 rearends, '59-64s have seven ribs.