Edelbrock 77139 Victor Jr Cylinder Head, Chevy LT1 /LT4, Complete

The Edelbrock part #77139 Victor Jr. LT1 (Gen V) cylinder head is an excellent upgrade for ultra high-performance on GM Gen V LT1 racing engines.

• The biggest change and advantage of Victor Jr. is the revised exhaust ports, which have been moved 1.5" horizontally to improve air flow.
• This revision will require the use of custom exhaust manifolds and headers.
• They have been designed with high flow intake/exhaust ports and back cut intake valves for improved air flow.
• The valve position has also been revised to accommodate interlocking valve seat rings and larger valves.
• The intake valve has been increased to 2.20" diameter and has hollow stem valves with a 45deg seat angle, while the exhaust valve has a diameter of 1.60" and utilizes a 50deg seat angle.
• It's designed with a thicker deck and more material in the intake, exhaust and port walls for improved strength, durability and for additional porting and deck milling.
• This cylinder head features fully CNC machined intake ports, combustion chambers and exhaust ports for improved performance.
• The Victor Jr. retains the stock rocker arm, intake port and spark plug tip location for use with factory components.
• Like all the other cylinder head, this has been designed, tested and cast from 356 aluminum and heat treated to T-6 specs in our facilities in Southern California to guarantee you get the best from a name you can trust.