Galopin returned to Ligier for 1990 as Philippe Alliot's race engineer. He designed the 1991Ligier JS35 chassis with Richard Divila, but the car's performance was disappointing and he was summarily fired by team owner Guy Ligier. For 1992 he returned to Formula 3000 with the DAMS team—which, like GBDA, was part owned by former driver René Arnoux—where he engineered Olivier Panis and Jean-Christophe Boullion to the 1993 and 1994 championships. Galopin worked for DAMS until 2002, during which time he also designed the team's unraced GD-01 chassis intended for F1, before moving to Pescarolo Sport.