Edelbrock Performer RPM Cylinder Head - Bare - 2.190 / 1.880 in Valve - 315 cc Intake - 118 cc Chamber - Big Block Chevy Race Ramps The 4771 features a 1

The 4771 features a 1

Each calibration has been dyno and track tested to deliver proven performance

The fully rebuildable and greasable ball joints can also be customized for your ride with available OE length and 1/4" extended Studs

1992-2013 GMC Yukon

Additional 4-quarts of Fluid Capacity

Edelbrock Performer RPM Cylinder Head - Bare - 2.190 / 1.880 in Valve - 315 cc Intake - 118 cc Chamber - Big Block Chevy Race Ramps The 4771 features a 1Cylinder 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;