Rearend identification
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===Axle flange dimensions=== | ===Axle flange dimensions=== | ||
| − | [[File:Rear end axle flange id.jpg|thumb|left| | + | [[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 Hotchkiss (removable carrier) type=== | ===GM Hotchkiss (removable carrier) type=== | ||
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[[File:GM DIFF ID TAGS.jpg]] <br style="clear:both"/> | [[File:GM DIFF ID TAGS.jpg]] <br style="clear:both"/> | ||
| + | |||
| + | ==Miscellaneous information and notes== | ||
| + | ===Casting numbers and casting codes=== | ||
| + | *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 posi center case is 3743833 | ||
| + | **These last two casting numbers will be the same for 1958-'61 | ||
| + | *The 1962-'64 casting number for the posi center case changed to 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. | ||
==Ford== | ==Ford== | ||
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===Removable (Salisbury type) carrier=== | ===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"/> |
| − | ===8 | + | ===8 inch=== |
====ID==== | ====ID==== | ||
An easy way to tell the difference between the 8-inch and the 9-inch Ford differential is that on an 8-inch, a socket will fit on the lower nuts seen in this picture. Since the pinion centerline is lower on a 9-inch, a wrench is needed to gain clearance. | An easy way to tell the difference between the 8-inch and the 9-inch Ford differential is that on an 8-inch, a socket will fit on the lower nuts seen in this picture. Since the pinion centerline is lower on a 9-inch, a wrench is needed to gain clearance. | ||
| − | [[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"/> |
| − | ===9 | + | ===9 inch=== |
One of the strongest Ford rear end was the 9". Still one of the best rearends to modify or use in stock form to handle big horsepower. | One of the strongest Ford rear end was the 9". Still one of the best rearends to modify or use in stock form to handle big horsepower. | ||
| − | [[Image:DSC02404.JPG|thumb|left|500px|9 inch Ford rearend]]<br style="clear:both"/> | + | [[Image:DSC02404.JPG|thumb|left|500px|9 inch Ford rearend]] <br style="clear:both"/> |
| − | + | ===9-3/8 inch=== | |
| − | ===9 3/8 | + | |
Removable carrier. Found in some Lincoln, Mercury and Thunderbird. | Removable carrier. Found in some Lincoln, Mercury and Thunderbird. | ||
==Non-removable carrier== | ==Non-removable carrier== | ||
| − | ===8.8 | + | ===8.8 inch=== |
| − | [[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"/> |
| − | ===8.7 | + | ===8.7 inch=== |
Non-removable carrier. Found in Granada, Monarch 1977 to 1978. | Non-removable carrier. Found in Granada, Monarch 1977 to 1978. | ||
| − | [[Image:87rear.jpg|thumb|left|500px|8.7 inch Ford rear end]]<br style="clear:both"/> | + | [[Image:87rear.jpg|thumb|left|500px|8.7 inch Ford rear end]] <br style="clear:both"/> |
| − | + | ===7.75 inch=== | |
| − | ===7.75 | + | |
Non-removable carrier. Found in Fairlane. | Non-removable carrier. Found in Fairlane. | ||
| − | + | ===7.5 inch=== | |
| − | ===7.5 | + | |
Non-removable carrier. Found in light duty applications such as six cylinder Falcon, Fairlane and 170 cid Maverick (Mavericks powered by 200 cid, 250 cid and 302 cid engines had the 8-inch differential). | Non-removable carrier. Found in light duty applications such as six cylinder Falcon, Fairlane and 170 cid Maverick (Mavericks powered by 200 cid, 250 cid and 302 cid engines had the 8-inch differential). | ||
| − | + | ===7.25 inch=== | |
| − | ===7.25 | + | |
Non-removable carrier. Found in Falcon, Econoline, Fairlane, Comet. | Non-removable carrier. Found in Falcon, Econoline, Fairlane, Comet. | ||
| − | + | ===7 inch=== | |
| − | ===7 | + | |
Non-removable carrier. Found in Falcon. | Non-removable carrier. Found in Falcon. | ||
| − | + | ===6.75 inch=== | |
| − | ===6.75 | + | |
Non-removable carrier. Found in some Pinto and Mustang II. | Non-removable carrier. Found in some Pinto and Mustang II. | ||
[[File:Pintorear.jpg|border|450px]] | [[File:Pintorear.jpg|border|450px]] | ||
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===Columbia 2-speed rear end=== | ===Columbia 2-speed rear end=== | ||
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====10 bolt carriers==== | ====10 bolt carriers==== | ||
| − | The corporate 10 bolt 8.5 inch rear end uses | + | The corporate 10 bolt 8.5 inch rear end uses two different carrier series depending on the rear gear ratio: |
| + | *2.56 and higher gears ("higher" gears have lower numbers, like 2.41, 2.29, etc.) go on the 2 series carrier | ||
| + | *2.73 and lower ("lower" gears = higher numbers, like 3.08, 3.23, etc.) go on the 3 series carrier | ||
| + | |||
| + | A 3-series gear can be installed on a 2-series carrier by using a [http://www.summitracing.com/parts/MRG-908A/?rtype=10 ring gear spacer], but this is not advised for stick shift applications, or if there's a lot of traction, HP and/or weight involved. | ||
| + | |||
| + | [[File:Copo 10-bolt ring gear spacer.jpg|thumb|left|450px|Mr. Gasket p/n 908A ring gear spacer for the 8.5" GM 10-bolt 2-series carrier]] <br style="clear:both"/> | ||
==Mopar== | ==Mopar== | ||
*[[Mopar rear axle spotter's guide]] | *[[Mopar rear axle spotter's guide]] | ||
| + | *[[Mopar tapered axle rear brake conversion]] | ||
| − | == | + | ==AMC== |
| − | == | + | ===ID=== |
| + | AMC axle codes are stamped on the differential casting between the cover and the tube weld hole on the passenger side) beginning in 1970 for the AMC 20 series rearend, 1972 for the AMC 15 series. | ||
| + | First four letters/ratios are 1970 rear axle codes stamped on the differential housing cover flange at about 3 o'clock: | ||
| + | |||
| + | A = 3.54:1 | ||
| + | B = 3.15:1 | ||
| + | C = 2.87:1 | ||
| + | D = 3.91:1 | ||
| + | E = 3.58 (12/43) | ||
| + | F = 3.08 (13/40) | ||
| + | G = 3.31 (13/43) | ||
| + | H = 2.73 (15/41) | ||
| + | J = 2.37 (19/45) | ||
| − | + | The 15 series had 10 bolt oval cover with drain plug center right. | |
| − | + | ||
| − | + | ||
| + | ===15 series rearend=== | ||
| + | The AMC 15 series rearend has a 7-9/16" ring gear. It was used in 1965 and earlier models with 196 ci or 199 ci inline 6 engines. The small cars (cars other than those listed below as "big car") used the AMC 15 rearend with inline 6 engines, AMC 20 rearend was used with V8 engines. The AMC 20 rearend could be ordered in fleet cars with inline 6 engines. | ||
| + | ===20 series rearend=== | ||
| + | The big cars (Ambassador, Classic, Rebel, Matador and Marlin) used the AMC 20 rearend with 232 ci inline 6 and bigger engines. | ||
| + | The series 20 was used in Jeeps as well as AMC passenger cars. A Jeep 20 series rearend would have a 5 on 5" bolt pattern. Passenger cars used the 5 on 4-1/2" wheel bolt pattern. | ||
| + | [[File:Amc 20 series rearend.jpg|thumb|450px|left|20 series under a 1966 Rouge]] <br style="clear:both"/> | ||
| + | |||
| + | ==Resources== | ||
| + | *[[Gear ratio check]] | ||
| + | *[[Limited slip and locking differentials]] | ||
| + | *[http://www.crankshaftcoalition.com/wiki/Ford_9-inch_rear_ends Ford 9 inch rearends] | ||
| + | *[http://chevellestuff.net/qd/generic_rear_axle_info.htm Generic rearend info] from chevellestuff.net | ||
| + | *[http://www.nastyz28.com/2gcog/rearaxle.html Camaro rear ends] | ||
| + | *[http://www.novaresource.org/axle.htm Nova rear ends] | ||
| + | *[http://www.chevelles.com/years/70/70rearcodes.html Chevelle rear ends] | ||
| + | *[http://corvette-world.com/corvette_1968-82_Rear_Axle%20Ratios_Identification.php Corvette rear ends] | ||
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| + | {{develop1}} | ||
[[Category:Identification and decoding]] | [[Category:Identification and decoding]] | ||
| + | [[Category:Rearend]] | ||
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