Chevrolet Performance Big Block Chevy L29 Vortec Cast Iron Cylinder Head

Suitable for towing, the Chevrolet Performance Big Block Chevy L29 Vortec Cast Iron Cylinder Head was used on 1996-2000 GM trucks/vans/SUVs with 7.4L 454 engines. Small 99cc combustion chambers allow the compression ratio to be raised one full point over most stock 119cc chambers & large oval ports flow better than other factory oval port cylinder heads.