BluePrint Engines Engine Short Block

BluePrint Engines Short Blocks: The Ideal Foundation for Your Performance Build

When you're ready to breathe new life into a classic muscle car or push a street/strip build to the next level, the short block you choose sets the ceiling for everything above it. BluePrint Engines has earned a reputation as one of the most trusted names in performance crate engines precisely because of the discipline and precision they bring to every engine short block that leaves their facility.

What Sets BluePrint Short Blocks Apart

A short block from BluePrint Engines isn't simply a collection of assembled components — it's a meticulously engineered foundation. Every rotating assembly is balanced to within two grams of specification using an advanced computerized balancer, a level of precision that translates directly into smoother power delivery across the entire RPM range. Cylinder bores are align-honed on computer-controlled machines to within .0002" straightness and roundness, and are sonic-tested for wall thickness to ensure durability under hard use.

BluePrint's short block lineup covers a wide range of popular performance platforms. For GM enthusiasts, the 383 ci Small Block Chevy Short Block Plus series (such as the BP38318SP and BP38321SP) arrives with a hydraulic roller cam, high-volume oil pump, timing cover, harmonic balancer, and oil pan — giving builders the freedom to select their own cylinder heads and intake combination. The power-adder variant (BP38321SP) is engineered to handle any type of forced induction, whether that means nitrous, a supercharger, or turbos. For Ford fans, the 347 ci Small Block Ford short block (BP347) features a high-strength cast-iron block with increased deck thickness, strengthening webbing, and improved water jacket designs for better coolant flow — a significant upgrade over the original Windsor-based 302 architecture.

BluePrint's Pro-Series short blocks take things further still. The 427 ci Pro-Series (PS427) features a BPE 1-piece rear main seal block with 4-bolt splayed mains, providing a strong and reliable foundation for demanding street or race builds. Importantly, the block itself is manufactured and machined in the USA, and the new BluePrint casting design is an improved architecture over the OEM small block — capable of being machined up to 454 cubic inches of displacement.

The BluePrint Dyno Promise & Warranty

What truly separates BluePrint from other short block suppliers is their commitment to documented, verified performance. Each engine is backed by the BPE Dyno Promise — a comprehensive dyno-generated printout that ships with the engine, confirming real-world horsepower and torque figures. BluePrint's standard warranty covers 30 months or 50,000 miles (parts and labor), and the standard warranty is fully transferable, adding long-term value for any build. An extended warranty of 48 months or unlimited miles is also available for eligible part numbers.

Who Should Consider a BluePrint Short Block?

BluePrint short blocks are ideal for builders who want a thoroughly prepped, precision-balanced rotating assembly without spending weeks sourcing and fitting individual components. Whether you're building a comfortable street cruiser, a weekend track car, or a high-output power-adder combination, these short blocks provide the confidence of a professionally assembled foundation with the flexibility to customize the top end to your exact specifications.

• GM Small Block 383 ci Short Block Plus — street/strip ready with roller cam and forged internals
• GM Small Block 383 ci Power Adder Short Block — built for forced induction applications
• Ford Small Block 347 ci Short Block — stroker displacement with a new high-strength BPE block
• GM Small Block 427 ci Pro-Series Short Block — 4-bolt splayed mains, USA-machined block
• GM LS Series 364 ci Short Block — modern LS platform with forged pistons and 24X reluctor ring

Explore the full BluePrint Engines catalog or browse all engine short blocks to find the right foundation for your next build.