D'Ecosse I learned from the old lead body man to use 3M weather strip adhesive on 352 ferd intake gaskets after washing surfaces dry with laquer thinner. Where those intelligent engineers made the intake a third of the engine a gorilla could hardly handle it !! After glueing it go home eat supper go back and just throw the intake in there,hit the 4 corners with red RTV first buckle it up!! Worked for us !! Company trucks were all GM except a ferd winch truck I never liked !!!