CHEVROLET THERMOSTAT HOUSING 1 PIECE NLA.-USE 531067S THERMOSTAT HOUSING 2EA 605034 1/2" PIPE PLUGS AND 551004 GASKET. (Remove hoses going to elbow fittings in intake. Install 1/2" pipe plugs in place of those fittings)
CRANK DRIVEN RAW WATER PUMP USED ON ALL ENGINES EXCEPT LT1 AND LTR FOR THOSE ENGINES USE 685020-4 (Impeller & gasket used for either of these pumps: Part #685007 & #685008)