SBC Pro SHP Iron Block - 9.025 4.125/350

The SBC Pro SHP Iron Block – 9.025 4.125/350 is a purpose-built bare engine block engineered for small-block Chevy builds demanding precision and proven durability. This iron block casting provides the structural foundation required for high-performance 350-cubic-inch engine assemblies, featuring a 9.025-inch deck height and 4.125-inch bore diameter that define the small-block Chevy platform. The four-bolt main bearing design delivers the rigidity necessary to contain power loads typical of street, race, and restoration applications where reliable block integrity is non-negotiable.

Cast iron construction provides superior thermal stability and longevity compared to aluminum alternatives, absorbing and dissipating heat consistently across extended operation. The 350 main designation confirms compatibility with standard small-block Chevy crankshaft specifications. The two-piece rear seal design accommodates conventional small-block Chevy rear-main sealing, while the BBC camshaft bore preparation allows flexibility for small-block applications requiring specific cam profile geometries. This bare block weighs 182 pounds, providing a known baseline for builders calculating total engine assembly weight during platform planning.

SBC Pro SHP iron blocks are specified by engine builders, restoration shops, and performance enthusiasts restoring or constructing small-block Chevy 350 engines where block quality and dimensional consistency impact final engine reliability. Whether for hot rod construction, marine application, or classic vehicle restoration, this block accommodates the broad spectrum of small-block Chevy performance configurations. The proven small-block Chevy platform remains the industry standard for accessible, scalable performance, and a precision iron block is the critical starting point for any build intended to deliver consistent power output.