Frankenstein M311 Aluminum Cylinder Head - Bare - 2.165 / 1.600 in Valve - 273 cc Intake - 71 cc Chamber - GM LS-Series Backup Washer Look for ARP stamped on

Look for ARP stamped on each stud as your assurance of quality

Foot Pedal Push To Talk (PTT)

An excellent performance upgrade

DSP Chips Installed

or trans brake

Frankenstein M311 Aluminum Cylinder Head - Bare - 2.165 / 1.600 in Valve - 273 cc Intake - 71 cc Chamber - GM LS-Series Backup Washer Look for ARP stamped onProduct Description: Cylinder Head M311 Bare 2. 165 1. 600 in Valves 273 cc Intake 71 cc Chamber Aluminum LS3 GM LS Series 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 valvetrain components designed