After AOD swap (from c4) I experince vibration at a certain rpm. It is noticable at 50 mph in 3d and 80 mph in OD. Wheels have been balanced, axle too. Vibration can be felt in the shifter stick.
What can this be?
What can this be?
Wheels have been balanced, axle too. Vibration can be felt in the shifter stick.
Driveshaft?
What flexplate did you use? The swap requires a conversion type flexplate because the 5.0 that the AOD came from and your 289 are not balanced the same. The C4 flexplate won't bolt up to the AOD converter. The AOD flexplate will bolt right up to your 289 crank, BUT will cause vibration due to the balance differnce.
I'm having the exact same problem with my 67 aod conversion. Your post said you had your axles balanced. I didn't know that was possible. Who did you take it to?
mhjo,
You haven't answered the implied question about whether/how you dealt with the flex plate imbalance issue. If it is a stock flex plate from a late model 5.0 it will be balanced incorrectly for your 289 and WILL cause a vibration that may be worse at different RPM's.
HTH,
Gene
mhjo said:I only have vibration at a certain rpm
Thanks for link.
Driveline angle will be checked by pro's tomorrow. Can you please explain "phase"?
As long as the appropriate hardware and yokes were used you shouldn't have an issue.Thanks! Great - I'll add it on the check list.
BTW: The guy who changed one of the U-joints and Yoke said that one is '65 and the other is '67 (larger). Any impact?