Rearend identification
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==Introduction== | ==Introduction== | ||
There are several ways to tell what the type/size/application of a rearend. Besides visually checking and comparing rearends to one another, there are casting numbers, build codes and dates displayed or cast/stamped in various locations on the rearend and elsewhere. These all can be used to help ID a rearend. | There are several ways to tell what the type/size/application of a rearend. Besides visually checking and comparing rearends to one another, there are casting numbers, build codes and dates displayed or cast/stamped in various locations on the rearend and elsewhere. These all can be used to help ID a rearend. | ||
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[[File:GM DIFF ID TAGS.jpg]] <br style="clear:both"/> | [[File:GM DIFF ID TAGS.jpg]] <br style="clear:both"/> | ||
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===Casting numbers and casting codes=== | ===Casting numbers and casting codes=== | ||
*The casting number for a 1956 case should be 3707306 | *The casting number for a 1956 case should be 3707306 | ||
| − | *The casting number for a 1957 non-posi center case should be 3725899 | + | *The casting number for a 1957-'61 non-posi center case should be 3725899 |
| − | *The casting number for a 1957 posi center case is 3743833 | + | *The casting number for a 1957-'61 posi center case is 3743833 |
| − | * | + | *The casting number for a 1962-'64 posi center case is 3789812 |
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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. | 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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Ford used a vast array of rear ends over the years. Some carried ratio and/or posi tags as well as the vehicle having a plate containing coded info on the rearend. Below are photos of some of the more common rear ends for visual reference and comparison: | Ford used a vast array of rear ends over the years. Some carried ratio and/or posi tags as well as the vehicle having a plate containing coded info on the rearend. Below are photos of some of the more common rear ends for visual reference and comparison: | ||
| − | + | ==Removable (Salisbury type) carrier== | |
[[Image:9inch.jpg|thumb|left|400px|Removable carrier, rear view.]] <br style="clear:both"/> | [[Image:9inch.jpg|thumb|left|400px|Removable carrier, rear view.]] <br style="clear:both"/> | ||
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====ID==== | ====ID==== | ||
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[[Image:9inchrear.jpg|thumb|400px|left|8 inch Ford differential details]] <br style="clear:both"/> | [[Image:9inchrear.jpg|thumb|400px|left|8 inch Ford differential details]] <br style="clear:both"/> | ||
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| + | ===8 inch=== | ||
===9 inch=== | ===9 inch=== | ||
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[[Image:88rearend.jpg|thumb|left|500px|8.8 rear end in a F150 4X4]] <br style="clear:both"/> | [[Image:88rearend.jpg|thumb|left|500px|8.8 rear end in a F150 4X4]] <br style="clear:both"/> | ||
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===8.7 inch=== | ===8.7 inch=== | ||
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*[http://corvette-world.com/corvette_1968-82_Rear_Axle%20Ratios_Identification.php Corvette rear ends] | *[http://corvette-world.com/corvette_1968-82_Rear_Axle%20Ratios_Identification.php Corvette rear ends] | ||
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[[Category:Identification and decoding]] | [[Category:Identification and decoding]] | ||
[[Category:Rearend]] | [[Category:Rearend]] | ||
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