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Old 01-05-2012, 10:02 AM
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Swapping spindles to move tie rod connection to rear

I'm reposting this question because it may not be noticed under my previous thread.
I've been looking for modern suspension components that will work on my '37 Buick Roadmaster to upgrade similar to the Wiki '37 BOP upgrade.
http://www.crankshaftcoalition.com/...pension_upgrade.
The '84-'96 Corvette dimensions are pretty close with the exception of the 13.25" lower control arm length.
My Buick has an C dimension of 20 inches and the closest part I have found to date is a '95 or earlier Chevy van with C dim of 18".
Maybe the Vett components would work with a relocated mount bracket.
The other problem is that Buick has the steering box mounted to the rear of the cross member. One way around of this is cutting a clearance path in front of the cross member like the Progressive Automotive kits specify.
1) Alternatively, would swapping the left and right spindle parts work? This would put the tie rod connect on the back of the setup and the disc brake caliper on the front of the setup.
2) Has anyone out there ever successfully done a similar left/right spindle swap?
Thanks
Mutt
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Old 01-05-2012, 01:58 PM
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Swapping the spindles side to side will throw off your steering geometry, specifially the ackermam. Ackerman is the geometry in the steering that allows the outside front wheel to follow a larger diameter arc than the inside front wheel. Without proper ackerman the front tires will scrub, wear quickly and on a slick road could even cause you to lose control.
The easiest explanation of ackerman angle that I saw showed the tie rod connection on a line that ran from the spindle to the center of the rear axle, this means for a front steer setup the steering arms angle out from the spindle and for a rear steer they angle in.
If you switch the spindles from side to side you will have a rear steer setup with the steering arms angled out, not a good situation.
In theory if the steering are forged and not cast they could be heated and bent to restore the ackerman but if the heat treatment of the steel is not correct you could weaken it or make it more brittle, also not advised.
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Old 01-11-2012, 12:55 PM
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For some reason I did not get an e-mail when you replied.
Thanks for reminding me about the ackerman angle.
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