{"title":"Positraction Packages - GM 8.875\" Car Rear, 1964-1972","description":"","products":[{"product_id":"1964-1972-gm-8-875-12-bolt-car-gear-and-limited-slip-posi-package-w-install-kit","title":"1964-1972 GM 8.875\" 12 Bolt Car - Gear and Limited Slip Posi Package w\/ Install Kit","description":"\u003cdiv class=\"container\"\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"col-xs-12\"\u003e\n\u003cdiv class=\"jumbotron\"\u003e\n\u003ch2 class=\"text-center\"\u003eGM 8.875\" 12 Bolt Car Posi Package\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"col-sm-12\"\u003e\n\u003cdiv class=\"panel panel-default\"\u003e\n\u003cdiv class=\"panel-heading\"\u003e\n\u003ch2 class=\"panel-title\"\u003e\n\u003cspan class=\"fa fa-file-text fa-lg\"\u003e\u003c\/span\u003e  Description\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"panel-body\"\u003e\n\u003ch3 class=\"text-center\"\u003ePackage Includes:\u003c\/h3\u003e\n\u003cp class=\"text-center\"\u003e\u003cstrong\u003e(1) Limited Slip Positraction Carrier\u003cbr\u003e(1) Ring and Pinion Gear Set (Choose Ratio Above)\u003cbr\u003e(1) Differential Master Install Kit\u003c\/strong\u003e\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e- Our Rigid Axle Eaton style limited-slip positraction unit uses \u003cstrong\u003eRaybestos composite clutches\u003c\/strong\u003e for smooth and aggressive traction. The carrier case is \u003cstrong\u003eforged steel\u003c\/strong\u003e for strength and reliability. Because this carrier is an eaton style clutch posi, it can be \u003cstrong\u003erebuilt and serviced\u003c\/strong\u003e. Our Rigid Axle positraction is the perfect choice for daily drivers, weekend warriors, towing, basic off-road use, and street\/strip applications. See below for some key features and tech specifications:\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFully Machined, High Strength Nodular Case\u003c\/li\u003e\n\u003cli\u003eRaybestos Composite Clutches\u003c\/li\u003e\n\u003cli\u003eServiceable \u0026amp; Rebuildable Design\u003c\/li\u003e\n\u003cli\u003e1 Year Warranty against Manufacturer Defects\u003c\/li\u003e\n\u003cli\u003eNon-Synthetic GL-5 Gear Oil Recommended\u003c\/li\u003e\n\u003cli\u003eFriction Modifier Required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003cp\u003e- *Note: Due to all factories being out of standard 4.10 gears, we are temporarily shipping a 3 series carrier, and a 4.10 thick gear if you select the 4.10 posi package. Just a heads up so you aren't supprised when you recieve a 3 series carrier from us.This is only applicable if you select 4.10 ratio at checkout.\u003c\/p\u003e\n\u003cp\u003e- *Note: The GM 8.875\" 12 Bolt Car differential has carrier breaks at 2.73 \/ 3.07-3.90 \/ 4.10. That means if you have 3.42 gears from the factory, and would like to run a 4.56 ratio, you will need to buy a thick gear, or a new carrier. Contact support if you need help figuring out what carrier you have.\u003c\/p\u003e\n\u003cp\u003e- If you added horsepower, or you just want better stock performance out of your GM 8.875\" 12 Bolt Car Differential, our gear set will get the job done. If you need help deciding on a gear ratio, please give us a call and we can help based on your needs!\u003c\/p\u003e\n\u003cp\u003e- Rigid Axle's aftermarket ring and pinion gear sets are made from heat treated \u003cstrong\u003e8620 steel\u003c\/strong\u003e. Our aftermarket gear set is made using a five-cut, \u003cstrong\u003eface milled\u003c\/strong\u003e manufacturing process. Once set up correctly, this will give a square contact pattern on the drive and coast side of each tooth. We are proud of our ring and pinion lines, and you will be too!\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/ring-and-pinion-break-in-procedure\"\u003e- Remember to properly break in your new gear set! Click here for instructions!\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e- Our Master overhaul kits come with everything you need to replace, modify, or rebuild your differential. This will allow you to get the job done quicker, and cheaper at the end of the day. Rigid Axle master bearing install kits include:\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBoth (Inner \u0026amp; Outer) Pinion Bearings and Races\u003c\/li\u003e\n\u003cli\u003eCarrier Bearings and Races\u003c\/li\u003e\n\u003cli\u003ePinion and Carrier Shims\u003c\/li\u003e\n\u003cli\u003ePinion Seal\u003c\/li\u003e\n\u003cli\u003ePinion Nut\u003c\/li\u003e\n\u003cli\u003eRing Gear Bolts\u003c\/li\u003e\n\u003cli\u003eCrush Sleeve\u003c\/li\u003e\n\u003cli\u003eComplete Shims\u003c\/li\u003e\n\u003cli\u003eThreadlocker\u003c\/li\u003e\n\u003cli\u003eRTV Sealant or Cover Gasket\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003cp\u003e- Rigid Axle is proud to offer our customers a full line of differential, transfer case, and transmission parts. We specialize in complete rebuild kits for domestic cars and trucks. Give us a call with your year, make, and model and we'll build you a custom kit for your build!\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cstrong\u003e \u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cstrong\u003e \u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"col-sm-12\"\u003e\n\u003cdiv class=\"panel panel-default\"\u003e\n\u003cdiv class=\"panel-heading\"\u003e\n\u003ch2 class=\"panel-title\"\u003e\n\u003cspan class=\"fa fa-car fa-lg\"\u003e\u003c\/span\u003e  Applications\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"panel-body\"\u003e\n\u003cul\u003e\n\u003cli\u003eBuick Centurion (1971-1972)\u003c\/li\u003e\n\u003cli\u003eBuick Electra (1965-1972)\u003c\/li\u003e\n\u003cli\u003eBuick Estate Wagon (1971-1972)\u003c\/li\u003e\n\u003cli\u003eBuick Gran Sport (1965-1967)\u003c\/li\u003e\n\u003cli\u003eBuick GS (1970-1972)\u003c\/li\u003e\n\u003cli\u003eBuick GS 350 (1968-1969)\u003c\/li\u003e\n\u003cli\u003eBuick GS 400 (1968-1969)\u003c\/li\u003e\n\u003cli\u003eBuick GS 455 (1970-1972)\u003c\/li\u003e\n\u003cli\u003eBuick LeSabre (1971-1972)\u003c\/li\u003e\n\u003cli\u003eBuick Skylark (1971-1972)\u003c\/li\u003e\n\u003cli\u003eBuick Special (1965-1969)\u003c\/li\u003e\n\u003cli\u003eBuick Sportwagon (1964-1972)\u003c\/li\u003e\n\u003cli\u003eChevrolet Bel Air (1965-1970)\u003c\/li\u003e\n\u003cli\u003eChevrolet Camaro (1967-1972)\u003c\/li\u003e\n\u003cli\u003eChevrolet Caprice (1966-1972)\u003c\/li\u003e\n\u003cli\u003eChevrolet Chevelle (1964-1972)\u003c\/li\u003e\n\u003cli\u003eChevrolet Chevy II (1965-1968)\u003c\/li\u003e\n\u003cli\u003eChevrolet El Camino (1965-1972)\u003c\/li\u003e\n\u003cli\u003eChevrolet Impala (1965-1972)\u003c\/li\u003e\n\u003cli\u003eChevrolet Malibu (1965-1967)\u003c\/li\u003e\n\u003cli\u003eChevrolet Monte Carlo (1970-1972)\u003c\/li\u003e\n\u003cli\u003eChevrolet Nova (1969-1972)\u003c\/li\u003e\n\u003cli\u003eGMC Sprint (1971-1972)\u003c\/li\u003e\n\u003cli\u003eOldsmobile 442 (1971-1971)\u003c\/li\u003e\n\u003cli\u003eOldsmobile 98 (1965-1972)\u003c\/li\u003e\n\u003cli\u003eOldsmobile Cutlass (1971-1972)\u003c\/li\u003e\n\u003cli\u003eOldsmobile Cutlass Supreme (1971-1972)\u003c\/li\u003e\n\u003cli\u003eOldsmobile Delmont 88 (1967-1968)\u003c\/li\u003e\n\u003cli\u003eOldsmobile Delta 88 (1965-1972)\u003c\/li\u003e\n\u003cli\u003eOldsmobile F85 (1965-1972)\u003c\/li\u003e\n\u003cli\u003eOldsmobile Jetstar 88 (1965-1966)\u003c\/li\u003e\n\u003cli\u003eOldsmobile Jetstar I (1965-1965)\u003c\/li\u003e\n\u003cli\u003eOldsmobile Starfire (1965-1966)\u003c\/li\u003e\n\u003cli\u003eOldsmobile Vista Cruiser (1967-1972)\u003c\/li\u003e\n\u003cli\u003ePontiac Acadian (1965-1971)\u003c\/li\u003e\n\u003cli\u003ePontiac Beaumont (1965-1969)\u003c\/li\u003e\n\u003cli\u003ePontiac Bonneville (1965-1972)\u003c\/li\u003e\n\u003cli\u003ePontiac Catalina (1965-1972)\u003c\/li\u003e\n\u003cli\u003ePontiac Executive (1967-1970)\u003c\/li\u003e\n\u003cli\u003ePontiac Firebird (1967-1972)\u003c\/li\u003e\n\u003cli\u003ePontiac Grand Prix (1970-1972)\u003c\/li\u003e\n\u003cli\u003ePontiac Grand Safari (1971-1972)\u003c\/li\u003e\n\u003cli\u003ePontiac Grandville (1971-1972)\u003c\/li\u003e\n\u003cli\u003ePontiac GTO (1965-1972)\u003c\/li\u003e\n\u003cli\u003ePontiac Laurentian (1965-1972)\u003c\/li\u003e\n\u003cli\u003ePontiac LeMans (1965-1972)\u003c\/li\u003e\n\u003cli\u003ePontiac Parisienne (1965-1972)\u003c\/li\u003e\n\u003cli\u003ePontiac Strato-Chief (1965-1970)\u003c\/li\u003e\n\u003cli\u003ePontiac Tempest (1970)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"col-sm-12\"\u003e\n\u003cdiv class=\"panel panel-default\"\u003e\n\u003cdiv class=\"panel-heading\"\u003e\n\u003ch2 class=\"panel-title\"\u003e\n\u003cspan class=\"fa fa-info-circle fa-lg\"\u003e\u003c\/span\u003e  Specifics\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"panel-body\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDifferential Model:\u003c\/strong\u003e GM 8.875\" 12 Bolt Car\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCover Bolt Quantity:\u003c\/strong\u003e 12\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarrier Breaks:\u003c\/strong\u003e 2.73 \/ 3.07-3.90 \/ 4.10\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Gear Bolt Quantity:\u003c\/strong\u003e 12\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Gear Bolt Size:\u003c\/strong\u003e 3\/8 X 24 RH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Gear Diameter:\u003c\/strong\u003e 8.875\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Gear Material:\u003c\/strong\u003e 8620 Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Gear Rotation:\u003c\/strong\u003e Standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePinion Diameter:\u003c\/strong\u003e 1.626\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePinion Spline:\u003c\/strong\u003e 30\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cstrong\u003e \u003c\/strong\u003e\n\u003c\/div\u003e","brand":"Rigid Axle","offers":[{"title":"3.08 \/ 30 Spline","offer_id":42384980508894,"sku":"POSI-GM12C-3-RA GM12C-308-RA GM12MK-C","price":912.0,"currency_code":"USD","in_stock":true},{"title":"3.08 \/ 33 Spline","offer_id":42391473684702,"sku":"POSI-GM12C-3-33-RA GM12C-308-RA GM12MK-C","price":967.0,"currency_code":"USD","in_stock":true},{"title":"3.31 \/ 30 Spline","offer_id":42391395762398,"sku":"POSI-GM12C-3-RA GM12C-331-RA GM12MK-C","price":912.0,"currency_code":"USD","in_stock":true},{"title":"3.31 \/ 33 Spline","offer_id":42391473717470,"sku":"POSI-GM12C-3-33-RA GM12C-331-RA GM12MK-C","price":967.0,"currency_code":"USD","in_stock":true},{"title":"3.42 \/ 30 Spline","offer_id":42384980541662,"sku":"POSI-GM12C-3-RA GM12C-342-RA GM12MK-C","price":845.0,"currency_code":"USD","in_stock":true},{"title":"3.42 \/ 33 Spline","offer_id":42391473750238,"sku":"POSI-GM12C-3-33-RA GM12C-342-RA GM12MK-C","price":909.0,"currency_code":"USD","in_stock":true},{"title":"3.55 \/ 30 Spline","offer_id":42384980574430,"sku":"POSI-GM12C-3-RA GM12C-355-RA GM12MK-C","price":845.0,"currency_code":"USD","in_stock":true},{"title":"3.55 \/ 33 Spline","offer_id":42391473783006,"sku":"POSI-GM12C-3-33-RA GM12C-355-RA GM12MK-C","price":909.0,"currency_code":"USD","in_stock":true},{"title":"3.73 \/ 30 Spline","offer_id":42384980607198,"sku":"POSI-GM12C-3-RA GM12C-373-RA GM12MK-C","price":845.0,"currency_code":"USD","in_stock":true},{"title":"3.73 \/ 33 Spline","offer_id":42391473815774,"sku":"POSI-GM12C-3-33-RA GM12C-373-RA GM12MK-C","price":909.0,"currency_code":"USD","in_stock":true},{"title":"3.90 \/ 30 Spline","offer_id":42384980639966,"sku":"POSI-GM12C-3-RA GM12C-390-RA GM12MK-C","price":855.0,"currency_code":"USD","in_stock":true},{"title":"3.90 \/ 33 Spline","offer_id":42391473848542,"sku":"POSI-GM12C-3-33-RA GM12C-390-RA GM12MK-C","price":909.0,"currency_code":"USD","in_stock":true},{"title":"4.10\/ 4.11 \/ 30 Spline","offer_id":42384980672734,"sku":"POSI-GM12C-3-RA GM12C-410TK-RA GM12MK-C","price":697.0,"currency_code":"USD","in_stock":true},{"title":"4.10\/ 4.11 \/ 33 Spline","offer_id":42391473881310,"sku":"POSI-GM12C-4-33-RA GM12C-410-RA GM12MK-C","price":909.0,"currency_code":"USD","in_stock":true},{"title":"4.56 \/ 30 Spline","offer_id":42384980738270,"sku":"POSI-GM12C-4-RA GM12C-456-RA GM12MK-C","price":912.0,"currency_code":"USD","in_stock":true},{"title":"4.56 \/ 33 Spline","offer_id":42391473914078,"sku":"POSI-GM12C-4-33-RA GM12C-456-RA GM12MK-C","price":976.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1832\/6013\/files\/POSI-GM12C-3-RA_GM12C-308-RA_GM12MK-C.jpg?v=1752601153"}],"url":"https:\/\/www.rigidaxle.com\/collections\/positraction-packages-gm-8-875-car-rear-1964-1972.oembed","provider":"Rigid Axle","version":"1.0","type":"link"}