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The GMPP LSX-LS7 heads are a six-bolt, as-cast variant to the CNC-ported production LS7 heads. Massive 2.200-inch titanium intake and 1.590-inch sodium-filled exhaust valves, on a 12° angle, are housed in the 70cc chambers. 270cc intake and 85cc exhaust runners may lack the flow of their CNC counterparts, but the extra head bolts help clamping force significantly. The valvesprings are rated to 0.650-inch lift, 0.15-inch under the LSX454 cam's capability. View Related Article
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