Moroso Radiator Cap 31-33 psi Hexagon H777C04XS and utilize an external MAP

and utilize an external MAP Sensor

7 in Diameter Body

LC8 all require conversion to 3-bolt camshafts

1979-1993 GMC C2500

Moroso Radiator Cap 31-33 psi Hexagon H777C04XS and utilize an external MAPProduct Description: Radiator Cap Racing 31 33 lb Hexagon Fit Standard Size Radiator Necks Sold Individually Moroso Performance Products is one of the worlds most respected suppliers of automotive equipment for racing and street performance applications. Moroso manufactures over 4000 products, from oil pans and oiling systems, to ignition wire, ignition components, valve covers, fuel system equipment, air cleaners, hard core racing tools, chassis and