The S10 10bolt 7.5/7.625" rear end is a good choice for the light low to medium horsepower small block cars. 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. a Custom Classic Truck" Peterson Publication; June or July 1999, . 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. may be different than pictured. 1990 to 1992: 7.625 inch ring gear, 28 spline 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 : '64 1/2-'65 Mustang candidate to replace the torque tube rear end or just get a better set of gears 0000004229 00000 n 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. also note on the A4's (auto's) shifter console if the gear selector for 1 is missing. HVMo0WJ~H|V`-e)6`!$)=-~6x@h1|o @`AWG^8J>4j|^Vk@oXq7@@/9ep There is also a yellow stamp 10 22 which is the . 70-81 4wd 6 lug reared Estimated Lead Time: 5-Days. Identified by casting number & number of cover bolts. The non C-clip 8.5" 10 bolt, type "C" rearend was used in some 1969-'72 Pontiac GP and 1970-'72 Monte Carlo. Someone may correct me, but as I recall 1959 was the first year for the "Wide Track" Pontiac. I am using a 62' Olds rear in my 61' Bel Air and it is 1" wider that the stock Bel Air rear. 3.08. 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. The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. manufactured by Pontiac in United States. getting back to the differential, why bill didn't cover 1956 i don't know, might have just been a typo or overlooked. 4.24 out of 5 stars. 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 This posi has 4 pinion gears, which makes it about 2 times as strong as the Chevy Eaton posi. Jeremy. Buick and Pontiac 10-bolt rear ends used flange-retained axles instead of the C-clip retained axles like those on Chevrolet rears. Outside of flange to outside 54.25" 66 up are wider. '70's Ford Grenada endstream endobj 29 0 obj<>stream Many Ford 9-inch parts are made offshore; they have smaller bearings and smaller diameter gears requiring less material. But it's been so long I can't be certain. Prices and availability are subject You're building a gasser. The End of an Era. A Chevy 1/2 ton pick-up may have a Chevy 10 bolt rear axle or a 12 bolt rear axle. Picture is from parts book. The Rochester Quadrajet carburetor was featured on the top spec GTO. GM / Chevy - Differential IdentificationShop by your differential. Ford. <<3d7f7a4e8421a74f9b85ec848848f3a1>]>> BOP, Pontiac, Each. 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. Several years later, the popularity of this almost deceased differential was rapidly swelling. )EgZ(WLlT!c!r~;+{( BRnpX{n>S;;5q N`+UHWF*FA6*BKm)JBw Add Width to compensate for drums as follows: 4" - 5" for small cars 5" - 6" for intermediate cars 6" - 8" for large cars . A turbocharger was added to the 301 to give the 1980 Trans Am an injection of performance. Task Force width ranges at this time. '67 Mustang Six , '68 AMX Re: Rear end interchangability 1965 to 1967 IMPAL. Very hard to find set, being as this is version is not being reproduced. 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. For a variety of reasons, not the least of which is the current Gasser craze, Pontiac and Olds rearends are enjoying renewed popularity. Dick this in no way reflects upon your statement but you make an excelent point when you stated " I read enough times that". Once I had determined the desired width with the loose wheels and tape measure I constructed a wood rear end out of a 2x4. Ford continued cranking out the 9-inch in vast quantities well into the '80s. Shop Full Width; Shop With Sidebar; . Here you can see the three white paint splotches identifying the pinion size and the gears. Add Width to Prices and availability are subject Compared to the Ford, the P/O parts were more expensive. Both of these are semi-floating axles. JavaScript is disabled. On Gen1, the code is "hit" on the right side of the rear axle (passenger side) with the inscriptions facing the front of . 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. 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. Billet-steel yokes and carrier caps could be added to make the 9.3-inch nearly bomb-proof. 0000006915 00000 n 20 0 obj<>stream 66-69 axle does not include 64 65 . This number may be on the top, bottom, or either side of the axle shaft. What I did is shown below in the photos. If it has the original Borg Warner posi then it is stronger than the Chevy 10 bolt. Advance Design Trucks seem to be using rear ends with widths ranging from 58"- 62". The most common GM unit for the 1982 to 1992 Camaro is the Saginaw style 10 bolt Chevy differential. 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 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. The 1967 GTO came in 3 speed Automatic and a 4 Speed manual. In this 489 case it is 3:91 gears and a 1 7/8 pinion. Q: Why do Pontiac/Olds 9.3 parts cost more than those for a Ford 9-inch? 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.