Chevy SBC 350 Vortec 180cc 64cc Straight Cast Iron Bare Cylinder Head best of all

best of all

These drives fit under your stock timing cover and come complete with instructions

these Speedmaster valve locks will provide the reliability that you've been looking for

Although the GM heads are good pieces

full stainless steel braid

Chevy SBC 350 Vortec 180cc 64cc Straight Cast Iron Bare Cylinder Head best of allAll 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.