No there is nothing wrong with the factory drivetrain whatsoever. The motor and entire car has 100,017 factory miles on it. The only thing we think may be an issue is possibly a burned valve, but other than that the motor starts up no problem. The car was parked in 1977 and has been garage kept ever since, which is what saved the car (no rust). Origionally sold in california, until second owner brought it to dallas and I'm the third owner down here in san antonio.