EGR on 351W,1990
Just leave the EGR valve on the engine, and the sensor. Only shut off the entrance to the engine with a solid gasket to the throttle body. The EGR will work fine. The sensor will work fine. The Engine's computer will work fine. But no exhaust goes into the Engine. Everything is happy.....
Good Luck.
Larry
1990 F250, 4x4, 351, E4OD, Headers, etc.