Blitz LS 250 Cylinder Heads W/ Blitz Platinum Dual Springs .660" (LS3 Cylinder Head)

Blitz LS 250 Series (LS3/L92 style Cylinder Head) with performance .660 Dual Platinum Springs Note: These are built to order.  Please allow 2-3 weeks for delivery. 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.  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: Blitz Locks: 7 degree tool steal (USA) Spring: Blitz Dual Platinum Spring / Max .650 lift Valve seats: Ductile Iron Valve Guide: Magnesium Bronze .5