SKU: SKU: EDE77139
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. 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!
Edelbrock part #77139 Victor Jr. cylinder heads are complete assemblies designed for 2014-Later Gen V engine applications. The Edelbrock Victor Jr. heads are an excellent upgrade for ultra high-performance on GM Gen V LT1 racing engines.
| Valve Angle | Exhaust 11.4 X 1.1 deg/Intake 11.6 x 4.5 DD |
| Guide Material | Manganese Bronze |
| Valve Spring Maximum Lift | 0.700 IN |
| Exhaust Port Location | +1.5 in Horizontal |
| Seat Material | Ductile Iron |
| CNC Ported | Yes |
| Exhaust Runner Volume | 110 CCM |
| Construction Type | Complete |
| Seat Angle | Exhaust 40 deg/Intake 45 DD |
| Quantity | Sold Individually |
| Valve Stem Diameter | 0.314961 IN |
| Retainer Included | Yes |
| Combustion Chamber Volume | 59 CCM |
| Exhaust Valve Diameter | 1.60 IN |
| Valve Spring Diameter | 1.32 IN |
| EGR Port | No |
| Horsepower | 750+ HJ |
| Deck Thickness | 0.7500 IN |
| Family | Victor Jr. |
| 8788 | Yes |
| 10024 | Yes |
| 8789 | Yes |
| 10025 | Yes |
| 10252 | Chromoly Steel |
| 10583 | No |
| 10261 | No |
| 10671 | No |
| 30 | No |
| 10 | Aluminum |
| 6627 | 320 CCM |
| 6635 | 7713F |
| 6634 | No |
| 3390 | Performance |
| 6621 | 9.24 IN |
| 10582 | No |
| 306 | Yes |
| 9799 | Yes |
| Series | Victor Jr. |
| Camshaft Type | Hydraulic Roller |
| Intake Valve Diameter | 2.20 IN |
California Prop 65 Warning: 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.