Engine Cylinder Head

The Edelbrock part #77059 Victor Jr. LT1 (Gen V) cylinder heads are 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 Beryllium-Copper valve seat rings and larger valves. The intake valve has been increased to 2.20" diameter and has hollow stem valves with a 45 Deg seat angle, while the exhaust valve has a diameter of 1.60" and utilizes a 50 Deg 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 of our other cylinder heads, these have 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. Looking for custom LT1 headers? Please contact Kooks Exhaust and Headers at (866) 586-5665 for more details about their LT1 headers for the Edelbrock Victor Jr. cylinder head!

Additional Attributes:

GTIN: 00085347770595
CNC Ported: No
Combustion Chamber Volume: 62.0
Deck Height: 9.240
Deck Thickness: 0.750
Exhaust Valve Diameter: 1.600
Grade Type: Performance
Guide Plates Included: No
Head Casting Number: 7713F
Intake Runner Volume: 320.0
Intake Valve Diameter: 2.200
Material: Aluminum
Push Rod Diameter: 0.375
RGL: WARNING: This product can expose you to Lead, which is known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65warnings.ca.gov.
Valve Spring Diameter: 1.320
Valve Spring Maximum Lift: 0.700
Valve Stem Diameter: 0.313

Extended Information:

Emissions : Racing or Pre-Emissions Use Only
Life Cycle Status: Obsolete

Packaging:

Quantity of Each: 1
Package UOM: EA
Dimension: 19.875 x 8 x 5.375 inches
Weight: 36.15 PG