Editing Rearend identification (section)
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==Axle dimensions== ===Axle flange dimensions=== [[File:Rear end axle flange id.jpg|thumb|left|600px|Axle flange dimensions from [http://moparinterests.blogspot.com/2010/09/mopar-rear-axle-dimensions.html Moparinterests blogspot.com]]] <br style="clear:both"/> ===GM removable carrier type=== The removable carrier rear end was used by GM for a number of years in passenger cars before GM started using the integral carrier rear end. The Pontiac/Olds versions from the later '50s were a drag racing mainstay for many years- even in front engined Top Fuel dragsters and Altereds. ===1955-'64 carrier casting numbers=== 3 series (2.73:1- up): '''410408N''' 2 series (2.56:1- down):'''410409N''' The Chevy version used various tags to designate the ratio. [[File:GM DIFF ID TAGS.jpg]] <br style="clear:both"/> ===Casting numbers and casting codes=== *The casting number for a 1956 case should be 3707306 *The casting number for a 1957-'61 non-posi center case should be 3725899 *The casting number for a 1957-'61 posi center case is 3743833 *The casting number for a 1962-'64 posi center case is 3789812 The above are all casting numbers for passenger cars. These casting numbers are the same for Corvette rearends because the rearends were cast and assembled at just two facilities: the Detroit Gear and Axle plant and the Buffalo, NY plant. The only thing that would be different between the same year Corvette and a passenger car rearend center section would be the stamped (not cast) two letter code on the passenger side of the case. The code designates the gear ratio.
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