The 727 was no trouble at all to power back and AA and NW did them a lot. Don’t need clamshell reversers to do it, the 727’s with or without them could do it.
Eastern even used to power back the 757 for the first few years after they got them but stopped I guess due to the risk to ground personnel or damage with those big engines hanging down. Obviously much safer with tail mounted engines but it could be done with most any aircraft if needed.