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Old 11-28-2006, 12:53 AM   #1
bad_turbo
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rearend question

looking at acquiring a 1 ton rearend out of an '81 truck for my '69 1 ton flatbed. I have a choice of a rearend from a regular '81 flatbed 2wd truck or the rearend out of an '81 1 ton 4x4 truck. Both are stock but is one harder to make fit than the other? Are the lengths different? Thanks
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Old 11-28-2006, 01:03 AM   #2
brak
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Re: rearend question

Quote:
Originally Posted by bad_turbo View Post
looking at acquiring a 1 ton rearend out of an '81 truck for my '69 1 ton flatbed. I have a choice of a rearend from a regular '81 flatbed 2wd truck or the rearend out of an '81 1 ton 4x4 truck. Both are stock but is one harder to make fit than the other? Are the lengths different? Thanks
I would think that externally they would be the same, and the differences would lie internally, such as gearing, Posi, etc...
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Old 11-28-2006, 01:16 AM   #3
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Re: rearend question

Take a tape measure with you, one or the other axles will have different spring width, than the 69. I think you want 40 1/4'' .
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Old 11-28-2006, 01:37 AM   #4
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Re: rearend question

from those years they should both be 14 bolt fullfloats with 10 1/2 ring gear. the widths should be the same if they are both single rear wheel. If they are a dulley than it will be 6" wider. like stated above gear ratio and posi ect,. could vary. and the spring pad width could very but if they are both 1 tons they should be the same. I would pick which ever one is in the best condition and has the gear ratio you want. You can always relocate the spring pads.
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Old 11-28-2006, 01:41 AM   #5
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Re: rearend question

:bansex: ?? oh, my bad, i thought i knew the answer
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Old 11-28-2006, 01:45 AM   #6
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Re: rearend question

the 2wd is a dually the 4x4 is a single rear tire
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