ALUM3801242.300/1.8801.62

The Dart Machinery CNC Ported Pro-2 Aluminum Chev BB Head is designed for large displacement big block Chevrolet racing engines. These CNC machined Pro-2 aluminum cylinder heads feature 380cc intake ports and are engineered to make competitive engine building easier and more cost-effective. They incorporate the rugged features of Dart's Race Series casting and are precision machined on 5-axis machining centers, offering impressive power and ease of use. Assemblies include: 2.300"/1.880" extreme application valves, 1.625" Vasco Jet springs, 10-degree titanium retainers with machined steel locks, studs, and guide plates. Features titanium retainers.