Discussion in 'Traditional Hot Rods' started by Ruiner, Sep 4, 2006. Look at the RPO codes. Mopar Rear Axle. (Rear Wheel Drive) +20 offset. How to Build the Right Period-Correct Pontiac/Olds Rearend - MotorTrend Under the hood, Pontiac installed a 2.5 . A: They came in all fullsize Pontiacs and Oldsmobiles from 1957-64. 73-77 GM A-body axle width? | Hot Rod Forum Why not a Ford? My '64's measure 54.25". Someone may correct me, but as I recall 1959 was the first year for the "Wide Track" Pontiac. '65 Cadillac, '66 Buick Wildcat 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. Snap On vs Daytona, Pittsburgh, ESCO, Husky, More. 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. . They are also easily modified to suit any chassis. //-->. 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 The two makes used very similar differentials through the mid-'40s and into the '50s. 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. 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 : Rear Suspension Width (Flange to Flange), Donor Vehicles Front and Rear 0000008567 00000 n plate to backing plate. 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. Pontiac Rear End | HQ Automotive Service & Parts Like the 8.2-inch 10-bolt, the 8.5 10-bolts use C-clips to retain the axles. Is a pontiac center section as olds rear ends of that era? '74 Valiant, '57 Ford Picture is from parts book. 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. Chevy Rear End Compatibility Chart (Expert Explained) Rear Axle Identification - venturestruckparts.com 1940 engine numbers run 2697268 through 3665902. xref hi don, there is no major difference in the pontiac differential from 1949 to 1956 other than rear brake related parts. The 301 was Pontiac's only V-8 left in production by 1979. Calculating the torque multiplication that your axle gears provide is quite easy. Posts: 8. Privacy Policy. You must log in or register to reply here. 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.

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