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Dually Update

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Posted by F14 on October 30, 2002 at 13:40:24 from (

A while back, I asked about converting an '89 Chevy K3500 4x4 to duals on the rear.

Here's the facts:

It can be done, but it's expensive. The single wheel rear IS different from the dually rear. Drums are different and the outer bearing housing is longer. Any dual rim has the right bolt pattern, but won't fit over the drum or clear the spring pack without an adapter/spacer. Adapters run $385 or more a set. Around here, used rims run $60 each. So you're looking at $625 before tires, minimum. Also, the adapters mounted on a single wheel rear place the wheel centers outside the outer bearing, which causes me to have serious reservations about overloading the bearing.

Trying to find a dually rear end with the correct ratio to match my 4WD that hasn't had the crap beat out of it is more work than I'm willing to do, altho it'd likely be cheaper overall.

In short, I scrapped the idea.

Sure woulda looked cool tho...

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