VEVOR Engine Cylinder Head Assembly Replacement, Aluminum Engine Cylinder Head, Compatible with Small Block Ford Engines, SBF GT40/ 289 / 302/ 351W, FORD Mustang, GT40 Wide Compatibility High Manufacturing Precision Industrial-Grade Aluminum Alloy Complete Parts Enhanced Fuel Efficiency Usage Tips Intake Port Volume: 175 cc,Spark Plug Installation Hole Specification: M14*1.25mm,Combustion Chamber Volume: 61 cc,Spark Plug Type: Slant Hole,Item Model Number: 129011601,Product Weight: 26.0 lbs / 11.8 kg,Intake Valve Diameter: 2.0 inch / 51.3 mm,Water Passage Sealing Side Leakage Pressure Range: 0.35-0.45 MPa,Product Dimensions: 19.7x7.2x5.3 inch / 500x183x133.6 mm,Main Material: Aluminum A356,Exhaust Valve Diameter: 1.60 inch / 40.6 mm