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Old 08-07-2006, 06:16 PM
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opinion on wheel pattern adaptors......

I have an A-body Plymouth that has the small 4" bolt pattern and was considering using wheel adaptors to convert it to 4 1/2" pattern instead of all the work involved in switching the rearend and all the front end components.. Has anyone used these and do they work well? Would they be strong enough? Also, are the adaptors for switching from s-6 to v-8 motor mounts worth while. I'm told the torsion bars are the same and the slant 6 torsion bars will work fine for a v-8.

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Old 08-07-2006, 06:21 PM
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I wouldn't think of using them, they can and will break. they put the weight over the inside mounts, rather than on the tire's lugs
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Old 08-08-2006, 06:25 AM
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The other issue is stress on the front wheel bearings. The adapters will push the tire and wheel farther outboard if you don't allow for the thickness when you buy your new rims. This applies a longer lever load to the bearings which will cause them to fail prematurely. Adjusting the offset can alleviate some of the bearing stress by putting the wheel centerline back where it needs to be.
The rears are not that much of a concern but pay attention to your offsets to keep the tire out of the fender lip.
Mark
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Old 08-08-2006, 06:33 PM
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Those are all good points to consider. It's just so hard to find decent wheels with the 4" bolt pattern. If anyone has any they want to part with I'm interested
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Old 08-09-2006, 12:20 PM
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I wouldn't have any problem using them on a street car with normal side-loading stress. You can choose your wheel offset to overcome any issues with bearing loads as previously stated.

Russ
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Old 08-09-2006, 03:15 PM
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I would not use the wheel adapters at all. Plus around here most tire shops will not touch a car that has them. As for the motor swap, as long as you use an engine in the 273-360 family you'll be okay. Anything larger and I would change the k-member and suspension.
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Old 08-09-2006, 06:13 PM
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Thanks for all the advice I appreciate it.
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Old 08-10-2006, 08:14 AM
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THIS is the only kind of wheel adapter i would buy & use.....joe
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Old 08-11-2006, 08:54 AM
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i used billet aluminum whell adapters with no problems
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