Join Date: Feb 2002
Location: N.W. Washington
you say flywheel, but your sig says t350. if its the automatic variety (a th350), try unbolting the torque converter and run the motor to see if the vibration goes away. if it does, its the converter or in the trans (likely converter).
just be careful revving it up, it will free rev plenty quick w/o a torque converter attached.
1968 rs with an old school 354" SB2.2 pump gas motor.
Repetition does not transform a lie into a truth.
Franklin D. Roosevelt