Edelbrock Performer RPM Cylinder Head - Bare - 2.190 / 1.880 in Valve - 315 cc Intake - 118 cc Chamber - Big Block Chevy Sprint Car Catalog MSD LS 2-Step Launch Control

MSD LS 2-Step Launch Control 8733 GM LS Engines

which provide the chemistry needed for initial break-in of a new engine

Longer friction life

Chevrolet: C2500 88 - 97 5 L Engine

Edelbrock Performer RPM Cylinder Head - Bare - 2.190 / 1.880 in Valve - 315 cc Intake - 118 cc Chamber - Big Block Chevy Sprint Car Catalog MSD LS 2-Step Launch ControlCylinder Head Specifications: Combustion chamber volume: 118cc; Intake runner volume: 315cc; Exhaust runner volume: 110cc; Intake valve diameter: 2. 19"; Exhaust valve diameter: 1. 88"; Valve stem diameter: 11 32"; Valve guides: Manganese bronze; Deck thickness: 9 16"; Valve spring diameter: 1. 55"; Valve spring maximum lift: . 700"; Rocker stud: 7 16"; Guideplate: Hardened steel; Pushrod diameter: 3 8"; Valve angle: 26 ; Exhaust port location: Stock;