The Blueprint Engines 383 ci stroker crate engine combines classic muscle with modern performance, dyno-tested at 436 hp and 443 lb-ft of torque, and features a genuine Holley Sniper 2 EFI system. Housed in a one-piece rear main seal BluePrint Engines High Strength Cast Iron 4-bolt main Block with a 4.000″ bore and 3.750″ stroke (383 ci), it features high-quality internals like a 544 Intake / .555 Exhaust Lift and 230 Intake / 236 Exhaust Duration @ .050 - 110° LSA hydraulic roller camshaft, hypereutectic pistons, 5.700″ rods, and Blueprint’s aluminum heads sporting 64cc chambers and raised ports. This engine is externally balanced front and rear for reliability and smooth operation.
The Sniper 2 EFI breathes through the satin dual-plane intake, offering crisp throttle response, self‑tuning via next generation ECU, and compatibility with modern fuels. It eliminates cold-start woes and rough idling, transforming the driving experience into one of modern efficiency on a vintage platform. Finished with a complete dress‑up kit—timing cover, valve covers, HEI distributor, and more, it’s a turnkey powerhouse that blends effortless drivability with classic muscle aesthetics.
The satisfaction of our customers is our highest priority at BluePrint Engines. We use quality components to balance your engine's rotating assembly within two grams of spec. We dyno test your crate engine and certify that it's ready to deliver horsepower and torque.
We give your BluePrint engine the industry's best-in-class warranty for 30-months / 50,000 miles — with the extra confidence only BluePrint can provide. Our warranty applies to individual or professional installations and is fully transferable.
For a detailed overview of our warranty, click here.
We make sure we hit our target horsepower and proper torque with every crate engine. We use an advanced computerized balancer to get our rotating assemblies within two grams, ensuring silky smooth power over the entire RPM range. That's precisely why our engines sound and run better than our competitors.
A comprehensive, dyno-generated printout showing these critical specs will accompany your delivered engine. No more guessing or wondering what your installed engine's real-world peak horsepower and torque ratings actually are. Any doubters in the crowd? Simply flash 'em your dyno results!
This engine will be dyno tested before it ships to you at no additional charge (others charge $500)!
 
