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post #1 of (permalink) Old 10-16-2000, 09:59 PM
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cut and rotate what?

I hear people talking about having their axle cut and rotated to correst pinion angle. What does this involve? Do they cut off the spring perches and rotate them? please help.
--Bowtie


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1973 Chevy Scottsdale/350/SM465/NP205/44/14 bolt/33's
1974 GMC Jimmy/350/TH350/NP203/44/12 bolt/31's
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post #2 of (permalink) Old 10-16-2000, 10:06 PM
 
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Re: cut and rotate what?

I think that is ok for the rear axle, but for the front you can't do it because of the steering knuckles and the right side perch is usually partly on the diff, so the best thing to do is to rotate the diff. You might have to do some kind of mod to it, so the perch will stay where you need it to be though.

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post #3 of (permalink) Old 10-16-2000, 10:08 PM
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Re: cut and rotate what?

thanks. I don't plan on doing this, just wanted to know what is involved when they do it.
thanks again

[b]<font color=blue>Bad Bowtie
1973 Chevy Scottsdale/350/SM465/NP205/44/14 bolt/33's
1974 GMC Jimmy/350/TH350/NP203/44/12 bolt/31's
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post #4 of (permalink) Old 10-17-2000, 12:03 PM
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Re: cut and rotate what?

If you lift a truck with a solid axle the pinon angle will be off. If you rotate the whole axle with shims or perches to fix it, then the caster is off. So, you cut the axle housing on both sides of the diff, or at the ends, and rotate so the caster and the pinion is correct then re-weld. The spring perches may have to be re-done too, it depends on the lift.

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