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 Steel bolt-on bracket is used

Steel bolt-on bracket is used when converting drum brake equipped 7

500" round port

1990-1990 GMC P3500

1975-1978 Dodge D300

This eliminates relying on the bolts to align the pulley

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 Steel bolt-on bracket is usedProduct 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