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Old 11-08-2011, 07:55 PM   #44
Street Smart
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Join Date: Dec 2009
Location: Brooklyn N.Y.
Posts: 819
Re: Driveline Vibration

My truck had the vibration from before i owned it, it was stock height. When i asked the guy about it he said he had tryed a few things(new rims, balancing the tires) but never figured it out. He said he just hardly drove that fast, to let it bother him, lol.
Since i own the truck I`ve changed to front disc, new rear drums, lowered 3/5 drop(spindles F&R springs) swapped axles, different D-shaft, new tires. The vibration was not terrible, It got worse after my LS/6L80E swap. I measured all of my angles before with the old set up and again after the new set up. The trans is down 2 more degrees then before, the trans is almost against the floor (really big trans!, low hump floor). So I`m pretty sure my problem is in the drive line angles.
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1967 GMC Suburban, Supercharged 6.2 LS with a 6l80e , my 11 second tow vehicle! *pic in my profile*
1987 GMC CrewCab Dually 6.0 LS/6L90e, new tow pig.

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