Re: Driveshaft question

Posted by StraightEights&Aces On 2011/6/17 3:39:11

Thanks for the help. After I pulled a part the driveshaft I see the movement was normal and the grease looked somewhat fresh yet I added a little. I too have that "machine gun chatter" when I accelerate along with the hard knock when it shifts. I think I've fixed the problem I bought a set of Add-a-leaf spring helpers they are short maybe 15" heavy arched leafs you bolt on without removing or modifing anything. The springs add another 1500lbs of strength and are about $30 at the auto parts store. I installed them, took the packard out, and no more machine gun acceleration or hard shifting. So I think my problem was weak leaf springs causing axle wrap under high torque.