Edelbrock Cylinder Head E-Cnc GM Gen IIi/IV LS3 Small Port Standard Block

Cylinder Head Specifications: Combustion chamber volume: 69cc; Intake runner volume: 230cc; Exhaust runner volume: 80cc; Intake valve diameter: 2.135"; Exhaust valve diameter: 1.55"; Valve stem diameter: 8mm; Valve guides: Manganese bronze; Deck thickness: 5/8"; Valve spring diameter: 1.30"; Valve spring maximum lift: .680"; Rocker stud: N/A; Guideplate: N/A; Pushrod diameter: 5/16"; Valve angle: 13.25°; Exhaust port location: 0.125" Raised Port; Spark plug fitment: 14mm x 3/4 reach, gasket seat. * Our E-CNC LS3 Cylinder Heads are a great general-purpose high performance cylinder head for any street- strip LS engine. These cylinder heads have a high velocity port compared to stock LS3 cylinder heads, making them an ideal upgrade for any cathedral port or 3.89" bore LS application. They feature an improved design and casting that gives cylinder head porters more material to work with compared to stock heads. Like all of our other E-CNC cylinder heads, these feature fully CNC'd intake ports, combustion chambers and exhaust ports for improved performance. Compatible with stock style rocker arms. * Match with Edelbrock head gasket sets. Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4" reach with flat gasket seat. IMPORTANT NOTES; E-CNC LS3 cylinder heads are a great general purpose high performance cylinder head for any street- strip LS engine. These cylinder heads have a high velocity port compared to stock LS3 cylinder heads, making them an ideal upgrade for any cathedral port or 3.89" bore LS application. They feature an improved design and casting that gives cylinder head porters more material to work with compared to stock heads. Compatible with stock style rocker arms. Features an exhaust port that has been raised 0.125" as well as raised spring pockets that have been machined 0.200" for use with longer valves. Cylinder Head; E-CNC; GM; Gen III/IV LS3; Small Port; Standard Block Edelbrock E-Force Supercharger Stage 1 Street System part #1566 for 2014-16 Silverado and Sierra 1500 increases the performance of your 6.2L Gen V engine to 528 horsepower and 496 ft/lbs. of torque at the rear wheels. Chevrolet:Small-Block Gen IV L76:364 (6.0L);Chevrolet:Small-Block Gen IV L77:364 (6.0L);Chevrolet:Small-Block Gen IV L92:376 (6.2L);Chevrolet:Small-Block Gen IV L94:376 (6.2L);Chevrolet:Small-Block Gen IV L99:376 (6.2L);Chevrolet:Small-Block Gen IV L9H:376 (6.2L);Chevrolet:Small-Block Gen IV LS3:376 (6.2L)