Description Rotocast A356-T6 aluminum casting used on the supercharged LT4 Rotocast manufacturing eliminates porosity Machined for direct injection Features larger chambers than LT1 head (65.47cc) for lower compression on supercharged applications Assembled with 2.126" titanium intake valves and 1.590" sodium-filled exhaust valves Valve springs designed for production LT4 camshaft Not compatible with LT1 or L8T production intake manifolds.
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