Is the '74 a drum or disc brake car? If it's a drum it will have the small bolt axles anyway and that will make the swap a lot easier. Driveshaft has to be shortened about 1-3/4". Most A-body 8-3/4's had the small u-joint in them too.
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| Author: | superdonut [ Tue Dec 31, 2002 12:55 am ] |
| Post subject: | Rear End |
I have got a line on an 8 3/4in rear end out of a 60s Dart. Not sure the details on the Dart. Is it a conversion that would work for my 74 Duster? What would be the advantages/disadvantages? Is there anything in specific that I should look for on this unit, numbers,etc? Thank you so much for the help. |
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| Author: | Doctor Dodge [ Tue Dec 31, 2002 8:28 am ] |
| Post subject: | |
Does this unit have big nuts holding the brake drums on? How wide is it? DD |
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| Author: | Matt Cramer [ Tue Dec 31, 2002 10:14 pm ] |
| Post subject: | Bolt pattern |
All A-body 8 3/4" rears came with the small bolt pattern from the factory. I believe your Duster uses the large bolt pattern. You'll also have to watch out for the driveshaft - it'll probably have to be shortened. The 8 3/4" unit is tougher, but I'm not sure a slant car needs the extra toughness, and you may not need the extra weight either. I seem to remember hearing the 8 1/4" one is good for up to 300 hp. Unless you're running a turbo, nitrous, or supercharging (or planning a V8 swap), the 8 3/4" may be overkill. Not that that's necessarily a bad thing. |
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| Author: | james longhurst [ Wed Jan 01, 2003 8:49 am ] |
| Post subject: | |
two big advantages to the 8 3/4 are ease of gear changes and the fact the axles are retained out at the hubs rather than with c-clips in the differential. the clips, by the way take most of the load around a corner. i have had no troubles from mine, but the possibility is there. but, like matt said, unless you're making a lot of power or are serious about racing the heavier rear may not be worth it. -james |
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| Author: | slantzilla [ Wed Jan 01, 2003 9:24 am ] |
| Post subject: | |
Is the '74 a drum or disc brake car? If it's a drum it will have the small bolt axles anyway and that will make the swap a lot easier. Driveshaft has to be shortened about 1-3/4". Most A-body 8-3/4's had the small u-joint in them too.
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