Blitz LS 250 Series (LS3/L92) Cylinder Head / Rocker Arms & Valve Cover Kit
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.
Along with this set of cylinder heads, includes a set of LS3 rockers arms, and upgraded Trunion kit. Also included is a set of black crinkled finished aluminum valve covers.
This package will work well on a natural aspirated, or power adder setup of up to 800hp.
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: BTR
Locks: 7 degree tool steel (USA)
Springs: Blitz Dual Platinum Spring / Max .650" lift
Valve seats: Ductile Iron
Valve Guide: Magnesium Bronze .500" O.D.
Seat angle: Blitz custom 5 Angle Intake / 4 angle Exhaust with the seats blended
Valve Seals: Viton (USA)
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.
Items included in purchase:
(1) Pair of Blitz LS 250 cylinder heads ( Blitz Dual Platinum Springs .650" lift )
(1) Set of GM 1.7 rocker arms with performance Trunnion upgrade (8) intake (8) exhaust
(1) Set of black crinkled finish valve covers w/gaskets & bolts