Rearend identification

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==Introduction==
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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.
  
==Ford==
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==Casting numbers==
Ford used a vast array of rear ends over the years. Below are some of the more common rear ends.
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Many if not all rear end housings will have some sort of casting number or ID cues to identify it. If the RPO decal is present (newer vehicles) or the broadcast or "build" sheet is available, it can show what was originally in the vehicle. Sometimes body/fender/cowl tags contain coded info that may list specifics on the rearend.
  
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===GM Hotchkiss (removable carrier) type===
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The Hotchkiss type removable carrier rear end was used by GM for a number of years in passenger cars before GM started using the Salisbury type 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.
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===1955-'64 carrier casting numbers===
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3 series (2.73:1- up): '''410408N'''
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2 series (2.56:1- down):'''410409N'''
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The Chevy version used various tags to designate the ratio.
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[[File:GM DIFF ID TAGS.jpg]] <br style="clear:both"/>
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==Ford==
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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:
  
 
===Removable carrier===
 
===Removable carrier===
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===7.75-inch===
 
===7.75-inch===
 
 
Non-removable carrier. Found in Fairlane.
 
Non-removable carrier. Found in Fairlane.
  
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===7.25-inch===
 
===7.25-inch===
 
 
Non-removable carrier. Found in Falcon, Econoline, Fairlane, Comet.
 
Non-removable carrier. Found in Falcon, Econoline, Fairlane, Comet.
  
  
 
===7-inch===
 
===7-inch===
 
 
Non-removable carrier. Found in Falcon.
 
Non-removable carrier. Found in Falcon.
  
  
 
===6.75-inch===
 
===6.75-inch===
 
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Non-removable carrier. Found in some Pinto and Mustang II.
Non-removable carrier.
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Found in some Pintos and Mustang II.
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[[File:Pintorear.jpg|border|450px]]
 
[[File:Pintorear.jpg|border|450px]]
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====10 bolt carriers====
 
====10 bolt carriers====
 
The corporate 10 bolt 8.5 inch rear end uses a 2-series carrier for 2.41 and 2.56 ratios and a 3-series carrier for 2.73 and lower (higher numerically) ratios.
 
The corporate 10 bolt 8.5 inch rear end uses a 2-series carrier for 2.41 and 2.56 ratios and a 3-series carrier for 2.73 and lower (higher numerically) ratios.
 
====Carrier casting numbers====
 
3 series (2.73:1- up): '''410408N'''
 
 
2 series (2.56:1- down):'''410409N'''
 
 
===GM removable carrier type===
 
The Hotchkiss type removable carrier rear end was used by GM for a number of years in passenger cars before GM started using the Salisbury type 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.
 
 
The Chevy version used various tags to designate the ratio.
 
 
[[File:GM DIFF ID TAGS.jpg]] <br style="clear:both"/>
 
  
 
==Mopar==
 
==Mopar==
  
===9.25===
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===Dana===
 
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===8.75===
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===8.25===
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==Others==
 
==Others==
  
===DANA===
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==Resources==
 
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====60====
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====44====
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====41====
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====35====
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====30====
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====28====
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====27====
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====25====
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==Related resources==
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[http://www.crankshaftcoalition.com/wiki/Ford_9-inch_rear_ends Ford 9 inch rearends]
 
[http://www.crankshaftcoalition.com/wiki/Ford_9-inch_rear_ends Ford 9 inch rearends]
  
 
[[Category:Rearend]]
 
[[Category:Rearend]]
 
[[Category:Identification and decoding]]
 
[[Category:Identification and decoding]]

Revision as of 14:43, 7 April 2012

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