Chevy SBC 350 Vortec 180cc 64cc Straight Cast Iron Bare Cylinder Head Speedmaster Twin-Carb combine two four-barrel

Speedmaster Twin-Carb combine two four-barrel carburetors to achieve the best balance of drivability

Although the GM heads are good pieces

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

and their quality construction and superior materials will help to protect your vital engine parts from the harmful effects of friction

Chevy SBC 350 Vortec 180cc 64cc Straight Cast Iron Bare Cylinder Head Speedmaster Twin-Carb combine two four-barrelAll 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.