Well, the Chevelle is D.O.A.....

[Jim Ferron]

Eric, sorry to see your busted up stuff. Be happy you weren't on the street when that happened. You know I have a twin to your car right? Mine has the OEM 283 shaft in it [whatever that is] with the L-88 and I run 11:90's [ten years] with it with no problem. And I'm sure the staging lanes are FULL of cars like ours with junk drive shafts running week after week with no issue. The vibration I think was telling you something wasn't right, something was flopping around. Perhaps the shaft already had a 'whip' [or was way out of balance] in it that just exaggerated it self at speed. Or I see you car sits pretty low in the back...maybe too low, maybe the rear pinion angle is off...I'll bet a good stock shaft would be fine....