Frankenstein M311 Cylinder Head - Assembled - 2.165/1.600 in Valve - 273 cc Intake - 71 cc Chamber - LS3 - GM LS-Series 30010BK 3 / 4-Bolt Flange

3 / 4-Bolt Flange

Short Shaft w/ Curved Contoured Slot Tip - Easier to Use & Fits Fasteners Better Than a Screwdriver

1979-1989 GMC P2500

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Frankenstein M311 Cylinder Head - Assembled - 2.165/1.600 in Valve - 273 cc Intake - 71 cc Chamber - LS3 - GM LS-Series 30010BK 3 / 4-Bolt FlangeProduct 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