Quick view Add to Cart Sierra 18-4493 High Performance Cylinder Head $1,141.99 $799.49 Sierra 18-4493 High Performance Cylinder Head 454/7.4L GM Vortex Head Universal GM Casting 12560241, 10141279 100cc Combustion chamber, 246cc Intake runner Add to Cart
Quick view Add to Cart Sierra 18-4491 Cylinder Head Assembly $1,225.99 $858.49 Cylinder Head Assembly for 4.3L Vortec Additional Details: Intake Manifold Mounting Bolts: 8 8 Valves Cover: Center Mount Note: Not for use with engines using factory roller rocker... Add to Cart