Edelbrock Victor CNC GM LS7 12 Degree 6-Bolt Cylinder Head, 307cc, .220in Int Port, Copper Seat

Edelbrock Victor CNC® LS7 Cylinder Heads are one of the first aftermarket high-performance LS-style heads to feature a raised intake runner design that fits both stock and aftermarket LS7 intake manifolds and valvetrain setups. The raised runner and rolled valve angle increase overall flow capability, while an improved water jacket design improves thermal conductivity.
These premium 110 BHN 355-T6 aluminum alloy cylinder heads (#77698) are designed with a 12° valve angle and unique 307 cc .220" raised intake runners to provide a better line of sight into the 69 cc chambers and allow for an improved short turn. The exhaust ports are also raised .100” to allow the use of stock and aftermarket manifolds, while the .400” raised rail works with aftermarket rockers. The 100% CNC-ported runners and combustion chambers optimize volume, atomization, and velocity.
The 6-bolt design increases clamping capacity and greatly improves head gasket retention in high-horsepower and boosted applications in small and large cubic inch, hardcore street applications. It also makes it compatible with the advanced Edelbrock LS Race, GM LSX 6-bolt, and OEM 4-bolt blocks. Built to withstand race conditions, the .750”-thick deck surface and a reinforced solid rocker rail increase integrity, rigidity, and stability. The copper seats received a 2.200” intake and 1.615” exhaust valve job. The heads are sold bare, but we recommend COMP shaft mount rocker system (#1523CPG), valves, and springs, or if you want to use single rockers like #1479-16, you will need our LS7 rocker stands (#54520-2).

Additional Information

These premium aluminum alloy 6-bolt cylinder heads are designed with a 12° valve angle and unique 307 cc .220" raised CNC-ported intake runners to provide a better line of sight into the 69 cc chambers and allow for an improved short turn.

Part Type

Engine Cylinder Head

• .750" thick deck surface increases integrity; Reinforced solid rocker rail increases rigidity & stability; 355T6 aluminum withstands race conditions
• 100-percent CNC-ported runners optimize volume, atomization and velocity
• 400" raised rail works w/aftermarket rockers; .100" raised exhaust port allows use of stock & aftermarket manifolds.
• 6-bolt head design is compatible w/advanced EDELBROCK LS Race, GM LSX Blocks, or OEM 4-bolt blocks. The heads also utilize the popular LS 6-bolt head design, making them compatible with both the EDELBROCK LS Race Block and GM LSX Blocks.
• Increased clamping capacity greatly improves head gasket retention in high horsepower & boosted applications. Can be used in small & large cubic inch, hardcore street applications
• Premium 110 BHN aluminum alloy, .220" raised intake port, .100" raised exhaust port, Copper valve seats, 307cc or 291cc intake port volume, 2.250" or 2.200" x 1.615" valve job
• Sold Bare, Fully Machined with Valve job. Increased clamping capacity greatly improves head gasket retention in high horsepower and boosted applications.
• The raised runner and rolled valve angle increase overall flow capability while an improved water jacket design improves thermal conductivity.

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Reference Information

VICTOR CNC 307 LS7 6-BOLT FLANGE