Chevy SBC 350 Vortec 180cc 64cc Straight Cast Iron Bare Cylinder Head so parallax errors reading the

so parallax errors reading the timing marks are virtually eliminated

They feature extra-thick steel that's double-welded to the ring gear for added strength

leading to valve seat damage and early valve grind

now impeccably paired with FiTech's sophisticated computer technology

Chevy SBC 350 Vortec 180cc 64cc Straight Cast Iron Bare Cylinder Head so parallax errors reading theAll Speedmaster 23deg. Small Block Chevy heads are available with Straight or Angled sparkplugs. Standard valve sizes are 2. 020 in. Intake, and 1. 600 in. Exhaust, both +. 100 in. length. While the 2. 02" valves are standard issue, all of our 23deg. aluminum heads can accept a 2. 050 in. intake valve with minimal additional work.