Edelbrock Performer RPM 348/409 Chevy Cylinder Head - Complete R01P003L From the development of our

From the development of our first fender flares for the Ford Bronco

All feature anodized aluminum fittings

570" ID that works well with our 938 and 927 dual valve springs

Styling - User-selectable theme colorsAuto Meter Gauges are the number one choice of professional racers worldwide

1970-1992 GMC Jimmy

Edelbrock Performer RPM 348/409 Chevy Cylinder Head - Complete R01P003L From the development of ourCylinder Head Specifications; Combustion chamber volume: 16cc; Intake runner volume: 215cc; Exhaust runner volume: 115cc; Intake valve diameter: 2. 19; Exhaust valve diameter: 1. 72; Valve stem diameter: 11 32; Valve guides: Manganese bronze; Deck thickness: 9 16; Valve spring diameter: 1. 55; Valve spring maximum lift: . 600; Rocker stud: 7 16; Guideplate: Hardened steel; Pushrod diameter: 3 8; Valve angle: 0 ; Exhaust port location: Stock; Spark