The B1 BS was designed as a replacement for the iron Mopar head. The B1 BS is absolutely the best buy for Mopar racers that would like to add horsepower with minimum changes. The only changes necessary are rocker arms, head stud kit, and longer pushrods. The standard parts that may be used include: headers, intake manifold, closed chamber or flat top pistons, and valve covers.

The B1 Mopar is designed for the serious Chrysler B big block racers and is easily capable of flowing over 400 cfm. The B1 Mopar requires some special parts such as pistons, rocker system, intake manifold, and valve covers. This head uses standard headers and a B block. A moved centerline (MC) version is also available. All heads in the B1 Series utilize a thick deck that is compatible with nitrous. Price per head.