Unleash serious performance with the BluePrint Engines GM 383 C.I.D. Stroker Crate Engine, a turn-key power plant that delivers a massive 436 horsepower and 456 lb-ft of torque right out of the box. This meticulously engineered 6.3L stroker is built for enthusiasts who demand proven, reliable power without the guesswork of a custom build. Combining a durable cast iron block with high-flow aluminum cylinder heads, this engine strikes the perfect balance between street manners and aggressive performance.
This engine arrives as a fully dressed long block, including a carburetor, intake manifold, distributor, and all necessary ignition components. The heart of its performance is the hydraulic roller camshaft, which provides a lumpy idle and strong mid-range pull without the maintenance of a solid lifter cam. With a 10.0:1 compression ratio, it’s perfectly suited for premium pump gas, making it an ideal drop-in replacement for classic muscle cars, hot rods, and performance street machines. For help with your engine swap, read our guide on [Planning a Successful Engine Swap for Classic GM Vehicles].
Every BluePrint engine is dyno-tested and backed by a 30-month/50,000-mile warranty, providing peace of mind that’s rare in the performance world. This isn’t just a collection of parts; it’s a fully engineered system designed to work in harmony, delivering instant throttle response and tire-shredding torque from idle to redline. Learn how it stacks up in our comparison, [Stroker vs. Standard Small Block: Choosing the Right Crate Engine].
Technical Specifications
| Specification | Details |
|---|---|
| Engine Part Number | BP38318CTCV |
| Base Engine | GM Small Block Chevy |
| Displacement | 383 cu in (6.3L) |
| Horsepower | 436 HP |
| Torque | 456 lb-ft |
| Compression Ratio | 10.0:1 |
| Block Material | Cast Iron |
| Cylinder Head Material | Aluminum |
| Camshaft Type | Hydraulic Roller |
| Fuel System | Carbureted (650 CFM Carb Included) |
| Assembly | Fully Assembled & Dyno-Tested |
| Warranty | 30 Month / 50,000 Mile |
Included Components
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Aluminum Cylinder Heads
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Intake Manifold (Dual-Plane)
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Carburetor (650 CFM Vacuum Secondary)
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Distributor (HEI-Style)
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Air Cleaner Assembly
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Spark Plugs & Wires
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Valve Covers
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Oil Pan
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Timing Cover
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Harmonic Balancer
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Gaskets & Fasteners (All Included)
Not Included (Required for Installation)
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Water Pump
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Flexplate/Flywheel
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Engine Mounts
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Exhaust Manifolds/Headers
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Fuel Pump
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Accessory Drive Kit (Pulleys, Brackets)
Comparison Table: BP 383 vs. Competitor Strokers
| Feature | BluePrint 383 Stroker | Competitor A (383 Kit) | Competitor B (ZZ6 Clone) |
|---|---|---|---|
| Power Output | 436 HP / 456 lb-ft | ~400 HP / ~430 lb-ft | 405 HP / 405 lb-ft |
| Cylinder Heads | Aluminum (High-Flow) | Cast Iron | Aluminum |
| Camshaft | Hydraulic Roller | Hydraulic Flat Tappet | Hydraulic Roller |
| Carburetion | 650 CFM Included | None | None |
| Ignition | HEI Distributor Included | None | Distributor Included |
| Warranty | 30-Month/50,000-Mile | 12-Month | Limited/None |
| Assembly | Complete & Dyno-Tested | Partial Assembly | Fully Assembled |
Frequently Asked Questions (FAQs)
Q1: Is this engine a direct replacement for my stock 350 small block?
Yes, this 383 stroker uses standard small block Chevy mounting points and dimensions, making it a direct physical replacement for any 262-400 cubic inch small block Chevy. You will need to reuse or upgrade your existing motor mounts, accessory brackets, and exhaust system to match the new engine’s performance level.
Q2: What fuel octane is required for the 10.0:1 compression ratio?
This engine is designed to run reliably on 92-93 octane premium pump gas. Using lower octane fuel may cause spark knock (detonation) under load, which can damage the engine. For areas with only 91 octane premium, proper timing calibration is essential.
Q3: Can I use my existing TH350/TH400/700R4 transmission with this engine?
Yes, this engine is equipped with a standard Chevy pattern and will bolt directly to your existing transmission. The engine is sold without a flexplate or flywheel, so you will need to purchase the correct one for your transmission (automatic or manual). Check out our selection of [Performance Flexplates and Flywheels].
Q4: What is the benefit of a “stroker” engine?
A stroker engine uses a crankshaft with a longer stroke, increasing displacement without increasing the physical exterior size of the engine. The primary benefit is a significant increase in torque across the entire RPM band, making the vehicle feel much more powerful and responsive, especially in street driving scenarios.
Q5: Does the warranty cover commercial or racing use?
No, the 30-month/50,000-mile warranty is for street use only in a non-commercial vehicle. It does not cover any form of racing or competition use. For engines intended for track use, ask about our [BluePrint Engines Race Series].
Pros and Cons
| Pros | Cons |
|---|---|
| Turn-Key Operation – Starts right up, no tuning guesswork | Not a Complete Drop-In – Requires accessories & exhaust |
| Exceptional Torque – 456 lb-ft for strong street performance | Premium Fuel Required – 92-93 octane recommended |
| Proven Dyno-Tested Performance – Power numbers are verified | Heavy – Cast iron block adds weight vs. all-aluminum engines |
| Comprehensive Component Inclusion – Carb, distributor, etc. included | Not Emissions Legal – For off-road/racing use only |
| Industry-Leading Warranty – 30-month/50,000-mile coverage | Aggressive Cam – May require stall converter for automatics |
| Aluminum Heads – Excellent heat dissipation & flow | Limited RPM Range – Optimized for street, not high-RPM racing |
Conclusion & Ideal Use Cases
The BluePrint Engines BP38318CTCV 383 Stroker is the ultimate plug-and-play solution for anyone looking to add serious, reliable horsepower to their classic GM vehicle. It delivers exceptional value by including all the critical components needed to run, backed by a real-world warranty.
This crate engine is perfectly suited for:
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Classic Muscle Cars: (1967-1972 Chevelle, Camaro, Nova, etc.)
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Hot Rods & Street Machines: Providing modern power in a classic package.
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Resto-Mods: Ideal for owners who want reliability and performance.
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Performance Trucks & SUVs: (1973-1987 C10, K5 Blazer) for massive torque.
For a more budget-conscious build, consider the [BluePrint Engines 350 HP 350 C.I.D. Crate Engine], or for all-out performance, step up to the [BluePrint Engines 515 HP 427 C.I.D. Stroker]. The 383 stroker hits the sweet spot for street-driven vehicles where massive, usable torque is the ultimate goal. For official specifications and installation support, consult the BluePrint Engines Technical Documentation (External Link).
Ready to transform your ride? Contact our performance experts today for package deals that include your needed accessories, headers, and shipping options.
