Speedmaster PCE281.2012 205cc 64cc Hyd Roller Cylinder Head Assy SBC 350

Chevy SBC 350 205cc 64cc Straight Hydraulic Roller Assembled Cylinder Heads Assembly Specifications Max Lift: .580" Coil Bind: .750" Intake Install: 145lbs @ 1.9 Exhaust Install: 145lbs @ 1.9 Closed Sear Pressure: 145lbs Open Seat Pressure: 360lbs All Speedmaster 23deg. Small Block Chevy heads are available with Straight or Angled sparkplugs. Standard valve sizes are 2.020" Intake, and 1.60" Exhaust, both +.100" length. While the 2.02" valves are standard issue, all of our 23deg. aluminum heads can accept a 2.05" intake valve with minimal additional work. Some of our CNC ported heads (PCE281.1354-1448) are designed around 2.05" Intake valves. Our cast iron heads use 1.94" intake valves, and 1.50" exhaust valves. For those racers looking for a head with 800+hp potential, step up to our new 15deg heads! These heads have room for huge 2.180"-2.200" intake valves. Assembled with the finest premium components to provide your engine with optimal airflow for maximum engine performance Improved power throughout the rpm range for greater throttle response and top-end horsepower