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12-point head design and a larger-than-stock shank diameter
carbon-to-coil rotor conductor
and their quality construction and superior materials will help to protect your vital engine parts from the harmful effects of friction
leading to valve seat damage and early valve grind
the least runout
Chevy SBC 350 Vortec 180cc 64cc Straight Cast Iron Bare Cylinder Head 12-point head design and aAll 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.
