Dart Engine Short Block
Why Dart Short Blocks Are Built Different
When it comes to engine short blocks, few names carry as much weight in the performance world as Dart Machinery. Founded in 1981 and headquartered in Michigan, Dart has spent decades refining the science of the high-performance bottom end — and their assembled short blocks are the proof of that investment. Rather than simply selling bare castings, Dart delivers complete, dyno-tested short block packages that give builders a head start on serious power.
The SHP Short Block Line: Street to Strip Performance
The cornerstone of Dart's short block lineup is the SHP (Special High Performance) series. These assemblies are built around Dart's own SHP iron block — a casting that uses race-derived features like Siamese cylinder bores, extra-thick deck surfaces, and blind cylinder head bolt holes that don't penetrate the water jackets, eliminating the need for thread sealant on head fasteners. The result is a foundation that is measurably stronger than any factory production block.
Inside each SHP short block, Dart specifies premium rotating assembly components selected for both power and longevity. Typical SHP packages feature precision-honed cylinder bores, forged 4340 steel crankshafts, forged 4340 I-beam or H-beam connecting rods, dish-top forged pistons with full-floating pins, plasma-moly rings, and Clevite H-series bearings with coated cam bearings. Available displacements span from 350 to 427 cubic inches in small-block Chevy configurations, with bore and stroke combinations covering 372, 400, 415, and 427 ci builds.
Gen III Hemi Short Blocks: Modern Muscle Foundation
Dart's short block reach extends well beyond traditional GM platforms. Their Gen III Hemi short block assemblies are built for both VVT-compatible and non-VVT applications, and come equipped with forged 4340 crankshafts, H-beam connecting rods, forged dish pistons, premium bearings, and coated cam bearings — arriving ready for a cylinder head and valvetrain. Both 426 ci and 482 ci configurations are available, making them equally at home on a street build or a dedicated race application.
Made in the USA, Built to Race Standards
What separates Dart short blocks from the competition is not just the hardware spec sheet — it's the process behind every assembly. Every casting Dart uses is 100% manufactured in the United States, employing aerospace-grade aluminum alloys and premium iron alloys with Brinell hardness ratings well above bargain-tier castings. Dart's components are developed in-house, produced on their own CNC machining centers, and verified on a computer-controlled engine dyno before leaving the facility.
Perhaps most telling is this: Dart's SHP short blocks are assembled by the same technicians who build the company's Pro Stock racing engines — the same level of precision and quality control flows through every product. Quality is monitored from the foundry through final machining, so every short block that ships carries the full weight of Dart's racing heritage behind it.
The Right Short Block for Your Build
Whether you're building a street/strip small-block Chevy, a boosted LS application, or a modern Hemi stroker, a Dart short block eliminates the most labor-intensive phase of the engine build while ensuring the rotating assembly is properly spec'd and matched from the start. Explore the full range of Dart Machinery products or browse all available engine short blocks to find the right foundation for your next build.
