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 Cover Bolt Pattern: Center Bolt
Minimum Required Bore: 4.00 inch
Extra thick base casting: Porting and Decking Allowed
Recommendations: If you are buying bare castings, we recommend you use a professional machine shop, or have the assistance from a competent engine builder. To set valve spring heights and the valve seats should be checked and installed to meet the guidelines of the components being installed (ie: Springs, keeper, valves). Beehive, or LS style dual springs can be used.
Item included in purchase:
(1) Blitz LS 250 cylinder head bare casting (1 head included in sale) No springs/valves included. Please purchase (2) for complete set.