Edelbrock Victor Jr. Pro-Port Bare Cylinder Head [Port Volume Intake/Exhaust 353cc/116cc | Exhaust Port Location +0.875 | Chamber Volume 48cc | Valve Sizes Intake/Exhaust 2.24/1.59 | Valve Spring Diameter 1.75] (Victor LS-R CNC) : COLORADOSPEED - LATE MODEL DOMESTIC (AMERICAN MUSCLE) | IMPORT (EUROPEAN | SPORT COMPACT) AUTOMOTIVE PERFORMANCE PARTS