Frankenstein M311 Cylinder Head - Assembled - 2.165/1.600 in Valve - 273 cc Intake - 71 cc Chamber - LS3 - GM LS-Series 11614 Constructed from fire-resistant single layer

Constructed from fire-resistant single layer Nomex for enhanced breathability and comfort

07 amps no check valve

big block Chevy

1968-1974 Chevrolet P20 Van

Frankenstein M311 Cylinder Head - Assembled - 2.165/1.600 in Valve - 273 cc Intake - 71 cc Chamber - LS3 - GM LS-Series 11614 Constructed from fire-resistant single layerProduct 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