I am using a 62' Olds rear in my 61' Bel Air and it is 1" wider that the stock Bel Air rear. '67 to '70 Mustang/Cougar 8 cyl. 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 . Is a pontiac center section as olds rear ends of that era? compensate for drums as follows: 4" - 0000002038 00000 n (painful to me while driving) I am pretty sure that it is the standard BOP 8.2, 10 bolt. "+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. 0 Contributing information were Bob Welch, J some Chevy's Dana 44 or Dana 60 with leaf springs 6 lug, Gear ratio's Mopar Rear Axle. Approximate rear end widths measured from backing plate to backing plate. This number may be on the top, bottom, or either side of the axle shaft. Aftermarket support followed in the form of beefy axles, gears, spools, couplers, and Mickey Thompson's aluminum and magnesium centersections. M&M CUSTOM. '71 Comet , '71- 72 Pinto, '39 -48 Chevrolet, '68 GTO Wilwood Engineering, Inc. - 4700 Calle Bolero - Camarillo, CA 93012 - (805) 388-1188. Willwood Engineering. Dec 20, 2007. '72 Chrysler. } 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. Wheel- Size.com The world's largest wheel fitment database. GM / Chevy - Differential IdentificationShop by your differential. Chrome 10 Bolt Rear End Cover Fits Chevy Pontiac Oldsmobile10 Bolt Differential In 1958 a good thing got better when limited-slip differentials were offered. Below matches. You are using an out of date browser. * Ring #s GM 40 13 == 67 - 8 - A. 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. '72-73 Mazda, '28-40 Ford , '57 - 59 Ford 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. Last Update: Feb. 24, 2023, 5:12 a.m. 18 21 to change without notice. Approximate rear end widths measured from backing My rear is the bolt in axles. You can do this by multiplying by the gear ratio. %twE_( H@v7H f)p* 0KO|O n>+ Picture is from parts book. . pontiac rear end width chart. ; Home 2; Home 3; Home / / pontiac rear end width chart. 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. 3.21 to 3.92. All but a few of the old factory limited-slips had been gathered up and beaten to death. You bring the gumption. some sources state that the 67 and latter are wider. L = Low - Zero to Negative Offset, Offset typically RWD (Rear . (Rear Wheel Drive) +20 offset. Compared side-by-side with the Chrysler, it boasted stronger gears and larger bearings. I came up with a cheap simple method to confirm the results of the measurement taken with the loose wheels. If in doubt, consult one of our differential experts at (800)510-0950! 5D med-duty 4-pinion. if you dont have a versailles just a regular 9 inch rear end,, that is also 60 ". Vehicles with Similar . the wider housing is not 1" closer to 3/4 . Post: rear end width chart (Topic#173541) greg pharr Contributor Posts: 897 Loc: North Mississippi Reg: 07-09-03. Cylinders. It has been my experience that the 66 up axle is longer. 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. Diagram. * Pinion #s GM 40 13 == 67 K D. 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. What I did is shown below in the photos. startxref Registered: 16 years ago. HVMo0WJ~H|V`-e)6`!$)=-~6x@h1|o Chrysler sent out the last of its 8.75-inch rearends in the early '70s. The non C-clip 8.5" 10 bolt, type "C" rearend was used in some 1969-'72 Pontiac GP and 1970-'72 Monte Carlo. 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. Good luck. 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. These smaller volumes and domestic content result in slightly higher prices. Terms of Service. S10. NFTs Simplified > Uncategorized > pontiac rear end width chart. Rear axle flange to flange is supposedly wider than the 68-72 AND the 78-88 GM A and G body cars. Add Width to well i have 1 from f 150 82 b/plate 2 b/plate it is 58". 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. '68 AMX . 0000000016 00000 n In this 489 case it is 3:91 gears and a 1 7/8 pinion. If it has the original Borg Warner posi then it is stronger than the Chevy 10 bolt. Casting # Year: Body: Size: Notes: 2070051: 1960 - 71: A . 20 0 obj<>stream A: Starting in 1937 Pontiac and Oldsmobile rearend designs slowly began to converge, to the point that in 1957 all major components were virtually interchangeable, with the exception of some brake components, suspension attachments, and axle housing/axle widths. 18 0 obj<> endobj This posi has 4 pinion gears, which makes it about 2 times as strong as the Chevy Eaton posi. 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. . Will only work with bolt in style axles. may be different than pictured. 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. To say I was disappointed by the service provided by this company would be an understatement. My 69 gto convert., purchased within the last year has a painful 2.56 rear gear. Lincoln Versailles, Regal with 10 bolt axle, S-10 P.U., 65-67 Nova. Rim Width Measure from the inside of the outer lip at the bead seating point to the inner lip. But when it came to rearends, the overwhelming favorites were those our of '57-64 Pontiacs and Oldsmobiles. Someone may correct me, but as I recall 1959 was the first year for the "Wide Track" Pontiac. They were tough with 9.3-inch ring gears, big pinion shafts, and large-diameter bearings and tough axles. . The renewed interest in the P/O 9.3-inch generated high demand for any limited-slip units that were left. Several years later, the popularity of this almost deceased differential was rapidly swelling. Automotive Technical and Reference Information, Project Cars, Trucks and Salvage Vehicles For Sale. The current axle needs to be measured to verify width, because it plays an important part in determining what rim backspacing is necessary. The End of an Era. Plywood pieces work well for shims. Rear-end track width measurements of classic American cars including Chevrolet, Ford, and Mopar vehicle rear axle widths. 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. It's not to the same level as a concours-correct restoration; no judge will deduct points for an incorrect paint code. 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. Ironically the heavy-duty nature of the 9.3 worked against it and played a part in its demise. Outside of flange to outside 54.25" 66 up are wider. 40/13. Buick and Pontiac 10-bolt rear ends used flange-retained axles instead of the C-clip retained axles like those on Chevrolet rears. So what we are left with is this: A fully capable, period-correct, brute of a differential with complete aftermarket support. Find 1967 PONTIAC GTO Differential & Rear-End Components and get Free Shipping on Orders Over $99 at Summit Racing! xref '67 Lincoln, '69 Dodge JavaScript is disabled. 70-81 4wd 6 lug reared 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? |;|tB70t:`!t;?Yp?o^16Y*Ra(k ;6te64^bv n+;:G57@hbM_5 N Mickey Thompson even produced aftermarket Olds and Pontiac magnesium gear cases that were frequently used in dragsters. 2/4-door sedan body type. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass. 1985 to 1989: 7.625 inch ring gear, 26 spline axle. It has been my experience that the 66 up axle is longer. 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. '70 Duster 0000006915 00000 n GU2 - 2.73's Standard auto trans gear ratio. This information will change as further information and corrections become available. How to cut your Ford F100 long bed to short bed in a weekend DIY project ~ Two-Part video details cutting frame and bed. 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 ; . On Gen1, the code is "hit" on the right side of the rear axle (passenger side) with the inscriptions facing the front of . ?|-Zce14^nF%67( }fSRaQfqX?|{8{>? VX5EX=b :"-'k>.VbyV^-nWxv-WgUtpo>sMhlI4ZV<4+s>|2k>\x{7M^^x. 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. 66-69 axle does not include 64 65 . 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 " "" "" ". Compared to the Ford, the P/O parts were more expensive. Learn more. ZE reg-duty / 4E med-duty 4-pinion. The 10-bolt was used in all the low performance applications. 62" 64-77 Chevelle, 73-76 Torino, 89 Calculating the torque multiplication that your axle gears provide is quite easy. 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. And even though new internals were available from Fabcraft, the carriers were simply becoming too difficult to find. You're building a gasser. 70 2wd 6 lug rear end 12 bolt Possible gear ratio's

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