Originally Posted by Cab_Burge
you do know that the 727 will take a eat a little more power than the 904 will, correct? You will probably need a 1972 or 1973 only 727 340 small block externally torque converter also due to being those motors were externally balanced in 1972 and 1973 only down puke whiney

just an FYI, back it the day I had more than one 72 340 that was internally balanced I believe the changeover took place sometime in the 72 model year beer