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However, the 9.3-inch differential was saved from obsolescence by a Texas-based company called Fabcraft Metalworks and its owner, Brad Duerst. A: Extremely strong! 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. 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. 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. Post: rear end width chart (Topic#173541) greg pharr Contributor Posts: 897 Loc: North Mississippi Reg: 07-09-03. 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. Very hard to find set, being as this is version is not being reproduced. may be different than pictured. '70's Ford Grenada 0000000991 00000 n . '72 Cougar, '74 Pontiac, '49 Plymouth, '61 Chevrolet Impala 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. 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. BOP, Pontiac, Each. I'm not sure of the Prices and availability are subject . (painful to me while driving) I am pretty sure that it is the standard BOP 8.2, 10 bolt. '70 Duster 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. Accurate Differential Identification is the first and most important step in your differential repair, upgrade or overhaul project. $5 Off Your $100 Mobile App Purchase . The total width of the Chevy II rear end is 58 inches and the total width of a '67 to '69 Camaro rear end is 60 inches. Pontiac labeled theirs Safe-T-Trac while Oldsmobile called it Anti-Slip. 5D med-duty 4-pinion. Cars from all the traditional drag racing classes are being built and/or restored, but among the most popular of these period-correct builds are the cars riding high on solid front axles and sporting fenderwell headers: gassers. (Rear Wheel Drive) +20 offset. 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You can do this by multiplying by the gear ratio. All Rights Reserved. Once I had the wooden rear end made I attached the wheels to the small wood axle flanges with wood screws and large washers to stop the screws from pulling through the lug nut holes. . Other changes were made to the limited-slip carrier, but strength was not adversely affected. Advance Design Trucks seem to be using rear '67 Mustang Six , '68 AMX You bring the gumption. I used 5 long lag bolts to hold the end pieces of wood on which permitted me to add up to 1.5 of shims to each end. I cut two axle flanges from a couple of short pieces of wood and then used 3/8 lag bolts to attach them to the longer center portion of the rear axle. "+j)(4 T "Hd&6F T:R%xA+R>6^yyp0}Zc9^):(cdf_rKr2zB,ywV}w0*lkxwM y icR,2*G{>K\"|>XWAIRYQ_dKx}wt}_=/3=)>fQaa-# C+|prj~%ox$LpKaGPG&T`o. Is a pontiac center section as olds rear ends of that era? Approximate rear end widths measured from backing plate to backing plate. 0000000016 00000 n 0000004229 00000 n 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. the versailles / granada rear ends from flange to flange is 58.5". Last Update: Feb. 24, 2023, 5:12 a.m. 18 21 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. 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. with 10 bolt axle. 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. (Dart/Duster) with V8&3/4 axle, Table taken from "How to Build Privacy Policy. Items The intake valve size increased to 2.11" and the exhaust valve increased to 1.77"in size from the previous model. @`AWG^8J>4j|^Vk@oXq7@@/9ep '71 Comet , '71- 72 Pinto, '39 -48 Chevrolet, '68 GTO I've heard 'prolly torque-tube' from most that I've asked My friend's stock '41 Pontiac is open drive, so I would imagine that the '50 is as well. Snap On vs Daytona, Pittsburgh, ESCO, Husky, More. Correct two piece design posi unit, exact for only 67 - 69 Firebird 10 bolt 8.2 rears. 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. 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. note 64 64 axle is same. sized GM Car, Malibu/Monte Carlo (82 up Metric Studs), 80 Granada & Chrysler sent out the last of its 8.75-inch rearends in the early '70s. 0000001644 00000 n GMC V-6 But when it came to rearends, the overwhelming favorites were those our of '57-64 Pontiacs and Oldsmobiles. 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. Will only work with bolt in style axles. Rusty but Rare 1976 Chevy K10 Sport Truck Revival! Learn more. This ratio is 3.08, perfect for cruisin. Its narrow front end with a plastic, wrapped-around bumper featured fog lights as an option. The 78-88 mid size GM cars use a 7.5" 10 bolt, which is about 58/5" wide. If it has the original Borg Warner posi then it is stronger than the Chevy 10 bolt. Detroit gear & axle : AB : 3.36 : No : Powerglide : Detroit gear & axle : AC : 4.11 : No : 3 speed, O.D . There are three different third-member castings, but all will install into any '57-'64 Pontiac/Olds housing. Q: What cars did they originally come in? charles coker, 1953 pontiac tech advisor. of extensive information was contributed by R. Welch: Original Vehicles 1985 to 1989: 7.625 inch ring gear, 26 spline axle. Pontiacs had 1.75-inch-wide drums in 1957-58 while Olds used 2-inch from 1959-on, both used 2-inch brakes. Rear axle flange to flange is supposedly wider than the 68-72 AND the 78-88 GM A and G body cars. 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 : I ordering the axles from Bears Performance who kept thier promise of delivery in about a week. If you noticed the axles are missing you would be correct. Trans Am. Professional technical support is available . The power is transmitted to the road by the rear . How to cut your Ford F100 long bed to short bed in a weekend DIY project ~ Two-Part video details cutting frame and bed. Copyright 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. . RWD (rear-wheel drive), automatic 4-speed gearbox. Below matches. 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 0000002353 00000 n It has the 4.75" bolt pattern, and ratios are usually 3.55-3.73, but sometimes you'll find a 3.36. The correct width for 59' & 60' is 63-1/4" I believe. GU3 - 3.08's V6 gear ratio. A turbocharger was added to the 301 to give the 1980 Trans Am an injection of performance. '72 Cougar, '74 Pontiac '49 Plymouth, '61 Chevrolet Impala '65 Cadillac, '66 Buick Wildcat '66-67 Chevrolet Big Car, '72 Charger It is a little better than the Camaro 8.2 10 bolt. Check our the Chevy rear end gear ratio chart above to help you identify the correct gear to use. '70 Dodge, '71-77 Maverick Estimated Lead Time: 5-Days. Car, 67-69 Camaro, 64-67 Chevelle, Plywood pieces work well for shims. 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. . Add Width to To say I was disappointed by the service provided by this company would be an understatement. In 1957, the Pontiac and Oldsmobile designs were combined and improved upon, producing a brand new 9.3-inch differential.