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Old 04-27-2004, 01:00 PM   #3
StingRay
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Join Date: Mar 2000
Location: Saskatoon,SK,Canada
Posts: 2,487
I've never done it myself but when I look at the tailshaft on my th350 and draw a line to the yoke on the diff I can't imagine being able to jack the truck up or to have the rear suspension drop on a bad bump and not bend that shaft where it passes through the cross member. If it's a coil truck I wouldn't advise trimming the opening either. Your rear control arms bolt on there and it's the very heart of the rear suspension. If it's a leaf truck I'd be less concerned about opening up the hole and then adding gussets. All of this of course could change a bit when a 700r4 is used as it moves that pivot point back and it may be just enough to make the difference. Another possible exception is if you are running the V8 in the I6 position as it is also further back. As previously mentioned it would also be a long shaft for a one piece shaft..... 700r4 and I6 position once again possible exceptions .
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