Chevrolet Performance 19436449 - Cast Iron L31 Vortec Small Block Chevrolet Assembled Cylinder Head

Chevrolet Performance Parts L31 Vortec Cylinder Cast Iron Heads have set the standard for proven performance and budget spending . The best out-of-the-box head for the money! Excellent flow produces broad torque and killer power. Stock springs are good up to 0.450" lift. Requires special intake manifold to fit the Vortec bolt pattern. Price is per head. Specifications: Intake Valve 1.940” Exhaust Valve 1.500” Chamber (cc) 64 Intake Port (cc) 170 Exhaust Port (cc) N/A Assembled or Bare Assembled Valve Spring Diameter 1.250” Max Lift 0.450” Type Stock Single Spark Plug Size 14mm Reach 0.708” Design Straight Suggested Plug NGK TR55GP L31 Vortec Cylinder Cast Iron Heads SKU: 19436449 Patterned from the design of the LT1 cylinder heads from the 1992-96 Corvette, the Vortec iron heads were first used on the fuel-injected 1996 pickup truck RP0 Code L31. The heads are equipped with 1.940"/1.500" valves from the factory, and the stock valve springs are compatible with a maximum valve lift of up to 0.450". Stock flow figures at 28” H20 L31 Vortec  Lift  Intake Exhaust 0.100" 70 48 0.200" 139 101 0.300" 190 129 0.400" 227 140 0.500" 239 147