Edelbrock Info Page Marken Performance 1-888-401-1362
The new Edelbrock E-CNC LS3 cylinder heads are engineered with high velocity ports. It is the perfect upgrade for any cathedral port or 3.89" bore LS1 & LS2 applications. These cylinder heads have a high velocity port when compared to stock LS3 cylinder heads. Additionally, the altered valve angles, valve and spark plug locations, coupled with the port design, will provide significant performance improvements over stock heads when paired with the right components thru Marken Performance. 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. Match with Edelbrock head gasket sets. Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4" reach with flat gasket seat.
Standard LS Block part # 61319, LSX Block part # 61329.
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
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