The Edelbrock part # 77139 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 valve seat rings and larger valves. The intake valve has been increased to 2.20" diameter and has hollow stem valves with a 45?ø seat angle, while the exhaust valve has a diameter of 1.60" and utilizes a 50?ø 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!
- Cylinder Head Style:
- Assembled
- Cylinder Head Material:
- Cast aluminum
- Cylinder Head Finish:
- Natural
- CNC-Machined Combustion Chamber:
- Yes
- Combustion Chamber Volume (cc):
- 57cc
- Combustion Chamber Style:
- Heart
- CNC-Machined Intake Runner:
- Yes
- Intake Runner Volume (cc):
- 320cc
- Intake Port Shape:
- Rectangular
- Intake Port Location:
- Standard
- Intake Valve Angle:
- N/A
- CNC-Machined Exhaust Runner:
- Yes
- Exhaust Runner Volume (cc):
- 110cc
- Exhaust Port Shape:
- Round
- Exhaust Port Location:
- Spread
- Exhaust Valve Angle:
- N/A
- Intake Valves Included:
- Yes
- Intake Valve Diameter (in.):
- 2.200 in.
- Exhaust Valves Included:
- Yes
- Exhaust Valve Diameter (in.):
- 1.600 in.
- Valve Type:
- N/A
- Maximum Valve Lift (in.):
- 0.750 in.
- Valve Springs Included:
- Yes
- Valve Spring Type:
- Single
- Outside Diameter of Outer Spring (in.):
- 1.320 in.
- Valve Guides Included:
- Yes
- Valve Guide Material:
- Bronze
- Valve Seats Machined:
- Yes
- Valve Seat Material:
- Ductile iron
- Valve Seat Machine Style:
- N/A
- Retainers Included:
- Yes
- Retainer Material:
- Titanium
- Valve Stem Seals Included:
- Yes
- Valve Stem Seal Style:
- Positive stop
- Locks Included:
- Yes
- Lock Style:
- 7 degree
- Camshaft Style:
- Hydraulic roller
- Spark Plug Style:
- Angled
- Guideplates Included:
- No
- Guideplate Pushrod Size:
- N/A
- Rocker Arm Studs Included:
- No
- Rocker Arm Nut Thread Size:
- N/A
- Accessory Bolt Holes Drilled:
- Yes
- Valve Cover Mounting Style:
- Perimeter bolt
- Heat Crossover:
- No
- Steam Holes Drilled:
- No
- Oiling Style:
- Through pushrod
- Machined for O-Ring:
- No
- Quantity:
- Sold individually.
- Notes:
- Conventional factory rocker arms are retained, exhaust bolt pattern shifted 1.500 in. forward on driver?s side and 1.500 in. back on passenger side. Factory intake mounting. Spark Plug Type 14mm Spark Plug, .750 Reach. Deck thickness 0.750 in.
- Make:
- Chevrolet
- Engine Family:
- Chevy small block Gen V
- Engine Sizes:
- 6.2L/376
