Description
Frankenstein M311 Cylinder Head Assembled 2.165 1.600 in Valve 273 cc Intake 71 cc Chamber LS3 GM LS Series 20 OTL NR L End A Size: 10 AN WEI7155 End A Size: 10 AN Fitting 10 AN 222 224 Duration Product Description: Frankenstein Engine Dynamics specializes in taking a high output engine to the next level