Buy GM 400 C.I.D. 508 HP Base Long Block Crate Engines Online
Upgrade your vehicle’s performance with the legendary power of the GM 400 C.I.D. 508 HP Base Long Block Crate Engines. Engineered for enthusiasts who demand high-torque output and reliable horsepower, this Blueprint 400 is the ultimate solution for street-performance and muscle car restorations.
Built using a seasoned or new small-block 400 crate engine architecture, this unit is meticulously balanced and dyno-tested to ensure it exceeds the expectations of the most demanding drivers. Whether you are upgrading a classic or building a custom project, this 400 crate engine Chevy provides the massive displacement and aggressive profile needed to dominate the road.
Overview
- Brand: BluePrint Engines
- Manufacturer’s Part Number: BP4002CT1
- Part Type: Crate Engines
- Product Line: BluePrint Engines GM 400 C.I.D. 508 HP Base Long Block Crate Engines
- Summit Racing Part Number: MLL-BP4002CT1
- UPC: 816671020748
- Crate Engine Family: Chevy Small Block
- Actual Engine Displacement: 6.6L/400
- Crate Engine Cylinder Head Material: Aluminum
- Engine Block Material: Cast iron
- Assembled: Yes
- Engine Balance: Internal/External
- Cam Style: Hydraulic roller, OE roller
- Rear Main Seal Style: 1-piece
- Intake Manifold Included: No
- Cylinder Heads Included: Yes
- Carburetor Included: No
- Throttle Body Included: No
- Distributor Included: No
- Oil Pan Included: Yes
- Valve Covers Included: Yes
- Timing Cover Included: Yes
- Water Pump Included: No
- Harmonic Balancer Included: No
- Flexplate Included: No
- Flywheel Included: No
- Air Cleaner Included: No
- Spark Plugs Included: No
- Spark Plug Wires Included: No
- Computer Included: No
- Wiring Harness Included: No
- Supercharger Included: No
- Remanufactured: No
- Quantity: Sold individually.
BluePrint Engines GM 400 C.I.D. 508 HP Base Long Block Crate Engines
Not your grandpa’s 400—BluePrint Engines GM 400 c.i.d. 508 hp base long block crate engines are the new “mighty mouse” small blocks. Their base packages come complete with oil pans, valve covers, and front timing covers—letting you finish the engine out, your way, with fuel and ignition systems. They’re also balanced, blueprinted, and dyno-tested.
BluePrint Engines GM 400 c.i.d. 508 hp base crate engines feature:
- Cast iron block with 4-bolt mains
- Compression ratio: 10.3:1
- Forged crankshaft
- OEM-type connecting rods
- 150,000 psi rod bolts
- Forged pistons
- Hydraulic roller cam
- BluePrint aluminum heads, 64cc chamber, with raised exhaust ports
- Dyno test results shipped with engine
- 30-month/50,000-mile warranty
Why Choose This Engine for Your Project?
When it comes to raw American muscle, the GM 400 C.I.D. 508 HP Base Long Block Crate Engines offer the perfect balance of displacement and modern engineering. If you are looking for a reliable, high-output 400 crate engine Chevy, this BluePrint-style build ensures that your vehicle has the heart of a champion.

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