End Rail Spacer Kit BBC Tall Deck w/RP Heads

The DART End Rail Spacer Kit BBC Tall Deck with RP Heads is a precision engineering component designed for serious big-block Chevy builders seeking maximum cylinder head compatibility and proper deck alignment. This spacer kit addresses a critical clearance issue that arises when pairing tall-deck BBC blocks with Dart's RP (Racing Products) cylinder heads, ensuring proper gasket sealing and eliminating potential combustion leaks. It is particularly beneficial for those assembling high-rpm street engines or dedicated race platforms.

Manufactured by DART—a trusted OEM supplier and performance specialist—this end rail spacer kit is engineered from durable materials to withstand extreme combustion pressures and thermal cycling typical of modified big-block engines. The spacer's precise geometry compensates for the dimensional differences inherent to tall-deck blocks, maintaining correct head surface contact and bolt preload without requiring shims or secondary fastening methods. The compact design allows installation alongside standard BBC head gaskets, ensuring compatibility.

This kit is indispensable for engine builders working with Dart RP head castings on tall-deck BBC platforms. It is especially useful for those building performance engines, as it helps maintain factory-correct head positioning without costly block modifications or adapter solutions. The minimal weight of the spacer means no impact on engine balance or overall vehicle performance.