Edelbrock 77139 Victor Jr Aluminum Cylinder Head Chevy LT1 / LT4 Gen V Port Volu. Victor Jr Aluminum Cylinder Head. Chevy LT1 / LT4 Gen V. Valve Size: 2.20"/1.60". Installation Note: Victor Jr. Exhaust ports have been moved 1.5 horizontally for improved air flow and will require custom exhaust manifolds and headers. Around here, we don't just sell parts - we rely on them when driving our own cars around racetracks, dirt trails, and interstates across the country. Parts may be our business - but grease, fuel, exhaust, power, and speed are what we live for. Today, more than 350 people are employed by JEGS and the business draws in…