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8 3/4 rearend for 81 d-150

Dan Brooks

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Can anyone tell me if there's an 8 3/4 rearend that will fit up under my 81 d-150? I've seen them under other trucks but wondered if maybe an A/B body might fit exactly in there and bolt up to my factory springs as well. Currently it has the factory 6 cylinder unit. Thanks
 

Polara_500

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Only one from a truck will bolt in. The ones from a C-body are very close in width but the spring perches are on the opposite side of the axle tube between cars and trucks. So unless you're good with replacing perches or you're gonna dick with lowering the truck, find one from a truck.
 

volaredon

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I had one from a 69 truck in my 79
The 318s and 360sused the same rear end as the "6 cylinder unit".
Trucks that were built while the 8-3/4 was current production with a 6 in them also got 8-3/4 units in them back then also.
I think by the 80s about any truck that wasn't trailer tow package equipped and wasn't 4wd all got the 8-1/4.
All available gear ratios we're available with any engine those years too.
 
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