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The Edelbrock 614 Big Block Chevy 24 Deg Pro-Port Cylinder head is designed specifically for the professional cylinder head porter and engine builder. Like all other Edelbrock Cylinder heads, Pro-Port cylinder heads are also cast in the USA at the state-of-the-art Edelbrock Foundry with extra-thick walls to allow for custom CNC porting. In most cases, seats and manganese-bronze valve guides are included, but not installed. Please note: These heads can not be used without professional head preparation. Pro-Port RAW Features Include: – Unported versions of Edelbrock race-winning Victor Series CNC heads for the professional cylinder head porter and engine builder – Pro-Port cylinder heads are cast in the USA at the state-of-the-art Edelbrock Foundry with extra-thick walls to allow for custom CNC porting – The only heads designed specifically to accommodate almost any CNC port shape, size or location – Offers enough wall thickness for CNC machining to various port dimensions – In most cases seats and manganese-bronze valve guides are included – Some Edelbrock Pro-Port Raw Heads Feature Our Special Hot Isostatic Pressing or HIP Process.
Edelbrock #615468 is a Finished E-CNC Version of the #615469 Pro-Port Edelbrock Victor 24 Deg BBC Cylinder Head. Features 0.400″ Raised Intake Port & 17 Deg Intake Valve Angle. Raw/Bare Castings, HIP Treated.

• Polished Then Hard Anodized For Use w/Racing Fuel

The Edelbrock #50159 Performer Cylinder Head is designed as a bolt-on performance upgrade for 1987-2006 Jeep’s with a 4.0L inline six engine. They feature better flowing intake/exhaust ports along with a modern combustion chamber design and back cut and swirl polished valves for improved flow. Retains the stock valve angle, pushrod length and valve cover bolt pattern for use with factory components and off the shelf accessories. Larger reinforced rocker bosses for improved strength at high RPM and Heli-Coil threaded inserts in the intake manifold bolt holes for added strength as well as a 3/4″ deck throughout the head also promotes stiffness and durability. This cylinder head is machined to accept both distributor or coil pack ignition. To optimize airflow, this cylinder head is designed with a 1991-2006 4.0L intake port location and 1991-98 4.0L exhaust port size. As a result, this cylinder head must be used with a 1991-2006 intake manifold and a 1991-1998 exhaust manifold. Aftermarket exhaust headers can also be used in place of 1991-1998 exhaust manifolds and MUST be used in place of 1999-2006 exhaust manifolds. Most aftermarket exhaust headers are compatible, but please check with the exhaust header manufacture to verify. This head is NOT compatible with 1999-2006 OEM exhaust manifolds.
The Edelbrock #50159 Performer Cylinder Head is designed as a bolt-on performance upgrade for 1987-2006 Jeep’s with a 4.0L inline six engine.

• Retains Stock Valve Angle

Edelbrock introduces its new E-Street 15-degree LS3 69cc cylinder heads (PN 77620) as a premium replacement option, ensuring great power on any high-performance or stock GM LS3 engine build. These heads offer the best performance value of any aftermarket GM LS3 head. Sold in pairs and assembled with premium COMP Cams valve train components, these LS3 heads are engineered with the same architecture as the factory head, and all stock components will fit without issue. The assembled heads feature Beehive(TM) Valve Springs, chromoly steel retainers, heavy-duty stainless-steel valves, and top-quality valve seals – all inspected and assembled by qualified Edelbrock technicians. The intake valve size is 2.165 while the exhaust is 1.590 . The Beehive Valve Springs allow up to .570 lift camshafts, ideal for many mild to hot camshaft grinds. Edelbrock E-Street 15-degree LS3 cylinder heads are manufactured with premium aluminum alloy, machined to the industry’s tightest tolerances. They feature manganese bronze valve guides for extended wear, with particular emphasis placed on holding precision tolerances on valve seat concentricity. This allows the valves to seal securely, eliminating any leak-down and increasing cylinder pressures during engine operation. All Edelbrock cylinder heads feature patented Clean Cast Technology(TM) , 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 the factory-style tapered-seat spark plugs or gasket-seat spark plugs available in wider heat ranges for maximum tunability.
The E-Street Cylinder Heads for GM LS3 are designed as premium quality, bolt-on-ready cylinder heads for any high-performance or stock replacement application. The chambers are 69cc, while the Beehive springs allow .570 lift camshafts.

• 2.165″ Stainless Intake Valve, 1.59″ Stainless Exhaust Valve
• Sold in Pairs (2 complete, assembled heads per part number)
• Ready to bolt on out of the box
• GM LS3 Compatible