Blitz LS 250 Series (LS3/L92 Cylinder Head)

Blitz LS 250 Series (LS3/L92 Cylinder Head)   The Blitz LS 250 cylinder head is a competitive alternative to the OEM (Mexico) casted LS3 cylinder head, they come standard with magnesium valve guides installed and a 3 angle performance seat-cut. These cylinder heads are designed with an aggressive port, which offers a sharper torque curve and quicker throttle response. It's a perfect cylinder head for any one wanting a street/strip setup.   The castings are also thicker than OEM, which can support nitrous, or supercharger applications. Note: we also sell these heads assembled and with a custom 5 angle and 4 angle seat work.  Blitz LS 250 Specs Intake valve: 2.165 Exhaust Valve: 1.590 Valve seats: Ductile Iron Valve Guide: Magnesium Bronze .500 O.D. Seat angle: Factory 3 Angle Intake Seat: 45 degree angle Exhaust Seat: 45 degree angle Valve angle: 15 degree OEM Combustion chamber: 69cc Intake Chamber: 247cc Exhaust: 79.5cc Spark plug: Angled OEM Rocker Arm: OEM Bolt Pattern Valve Co