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 Blitz LS 250 head will also support a well-tuned naturally aspirated LS3 to 600hp.
The Blitz LS 250 are built with a thicker base casting, wich is great for power adder setups (supercharge / turbo), and CNC porting
Note: These heads can easily upgraded to heavier performance springs to allow for more cam lobe lift.
Blitz LS 250 Specs
Intake valve: 2.165
(Blitz SS Super-Loy performance valve, 21-4N stainless steel.)
Exhaust Valve: 1.6
(Blitz SS Super-Loy performance, valve 21-4N stainless steel)
Retainers: GM
Locks: 7 degree tool steal (USA)
Spring: GM Spring / Max .560 lift
Valve seats: Ductile Iron
Valve Guide: Magnesium Bronze .500 O.D.
Seat angle: Blitz custom multi angle seat job Intake / Exhaust and blended seat
Valve Seals: Mahle
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: OEM Angled
Rocker Arm: OEM Bolt Pattern
Valve Cover Bolt Pattern: Center Bolt OEM
Minimum Required Bore: 4.00 inch LS3 / L76 / L92 / LS2
Extra thick base casting: Porting and Decking Allowed.
Item included in purchase:
(1) Pair of Blitz LS 250 cylinder heads (New Take Out GM Beehive Springs .560" lift)