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500" round port
Fiberglass braid adds greater pull strength and terminal retention while stainless steel spark plug terminals provide corrosion resistance
Features single programmable digital shift point
1990-1990 GMC P3500
Frankenstein M311 Cylinder Head - Assembled - 2.165/1.600 in Valve - 273 cc Intake - 71 cc Chamber - LS3 - GM LS-Series Sprint Car Engine Accessories 500" round portProduct Description: Cylinder Head M311 Assembled 2. 165 1. 600 in Valve 273 cc Intake 71 cc Chamber Aluminum LS3 GM LS Series Sold Individually A designer and manufacturer of top quality high performance cylinder heads and intake manifolds for GM's popular LS series engines as well as other performance powerplants, Frankenstein Engine Dynamics specializes in taking a high output engine to the next level. They also offer premium camshafts and
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