Drive shaft question?

[chargerbr549]

I am looking at getting a new driveshaft built for my 69 RT Charger, I have a driveline vibration that I am trying to get rid of, I took out the shaft and measured it and its about .050 out of whack in the middle so I was looking at replacing the tube but the factory tube is 3.250 diameter and necks down to 2.750 but the aftermarket tubes are straight only. Is there a reason the factory necked down the driveshaft tubes? I am looking at finding a bigger diameter yoke for the rear so I it will match the front yoke for diameter so I can make a driveshaft. Can a person somehow straighten and rebalance the original shaft?  Anybody have other suggestions, it seems nothing is easy.


Kevin

[400/6/PAC]

My car has had the same problem since the Day I got it on the road.
Took the shaft in twice to have it balanced ( different companies )
I think My vibration may be in My torque converter.
Not sure about the size down.
Will be interesting to learn about this.

[Nacho-RT74]

one thing to check is the propper tight on tranny to engine bolts, and engine to tranny bolts. They are not hard to come loose. I found that once and solved at least BIG PART of the vibration.

has been told the next deal is the tail shaft bushings.

[Brickster]

yes the shaft can be straightened and balanced.  I think the reason for the smaller diameter weld yoke is for cost. Check out our website.

http://dansdriveline.com/cgi-bin/p/awtp-custom.cgi?d=dans-driveline&page=415