BluePrint Engines Chev 400 , 508HP Dressed Long Block Crate Engine # BP4002CTC1 Cylinder Head NPT female threaded gauge port

NPT female threaded gauge port

Smooth operation for the front

Reduced travel OEM type lifter

These valves are often referred to as idle air control or IAC valves (GM)

BluePrint Engines Chev 400 , 508HP Dressed Long Block Crate Engine # BP4002CTC1 Cylinder Head NPT female threaded gauge portBluePrint Engines Chev 400 , 508HP Dressed Long Block Crate Engine # BP4002CTC1 HP Torque: 508 HP 473 FT LBSCompression Ratio: 10. 3: 1Aluminum HeadsHydraulic Roller CamForged CrankForged Pistons BLOCK: NEW BluePrint Cast Iron BlockManufactured and Machined in the USA! 4 Bolt Main4. 125" Bore1 Piece Rear Main SealMech fuel pump provision: YesPassenger Side Dipstick Drilled and tapped for clutch linkage ROTATING ASSEMBLY: New BluePrint Forged