Official Release:
Edelbrock® E-Street® Cylinder Heads for GM LS Cathedral Port Engines
Olive Branch, MS – Edelbrock introduces its new E-Street LS cathedral port cylinder head as a premium replacement head, ensuring great power on any performance or stock engine build.
Available bare or assembled with premium COMP Cams® valve train components, these LS cathedral port heads are engineered with the same architecture as the factory head, and all stock components will fit without issue. The assembled versions feature either dual or BeehiveTM Valve Springs, chromemoly steel retainers, heavy-duty stainless steel valves, and top-quality valve seals – all inspected and assembled by qualified Edelbrock technicians. The Beehive Valve Springs allow up to .570” lift camshafts while the dual spring option is good up to .660” lift, ideal for many mild to hot camshaft grinds.
Edelbrock E-Street LS Cathedral Port Cylinder Heads are manufactured with premium material and machined to the industry’s tightest tolerances. They feature premium manganese bronze valve guides for long wear with particular emphasis placed on holding precision tolerances on valve seat concentricity. This allows the valves to seal securely to eliminate any leak down and increase cylinder pressures during engine operation.
All Edelbrock cylinder heads feature patented Clean Cast TechnologyTM, a revolutionary process that eliminates casting flaws and promotes a smoother internal surface finish for greater air and coolant flow. These benefits provide more power and increased cooling ability right out of the box. A unique dual spark plug pocket design allows you to use both the factory style tapered seat spark plug or gasketed seat spark plugs that are available in wider heat ranges for maximum tunability.
Edelbrock’s E-Street Cylinder Heads for GM LS Cathedral Port Engines are designed for any high performance or stock replacement application and offer the best performance values for aftermarket GM LS Cathedral port heads.
Features & Benefits:
- Available fully assembled with .570” or .660” lift valve springs or as a bare head
- Clean Cast Technology eliminates casting flaws and promotes a smoother surfacefinish for greater air and coolant flow
- Bronze/manganese valve guides for better wear resistance
- Stainless steel valves for durability
- Unique dual seat spark plug pocket gives total flexibility in spark plug selection
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