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Home Engines Crate Engines BluePrint Engines GM 400 C.I.D. 508 HP Base Long Block Crate Engines with 6 in. Connecting Rods BP4003CT1
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BluePrint Engines GM 400 C.I.D. 508 HP Base Long Block Crate Engines with 6 in. Connecting Rods BP4003CT1

$7,323.00

Crate Engines, GM 400 C.I.D. 508 HP Base Long Block with 6 in. Connecting Rods, 6.6L/400, Assembled, External Balance, Chevrolet, Small Block, Each

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Description

Overview

Brand: BluePrint Engines
Manufacturer’s Part Number: BP4003CT1
Part Type: Crate Engines
Product Line: BluePrint Engines GM 400 C.I.D. 508 HP Base Long Block Crate Engines with 6 in. Connecting Rods
Summit Racing Part Number: MLL-BP4003CT1
UPC: 816671020762
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: 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 with 6 in. Connecting Rods

Add some real power to your build—BluePrint Engines GM 400 c.i.d. 508 hp base long block crate engines with 6 in. connecting rods. These engine assemblies are built by skilled craftsmen utilizing BluePrint’s exclusive designed and manufactured blocks. Their base units 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 include:

* Cast iron block with 4-bolt mains
* Compression ratio: 9.5:1
* Forged crankshaft
* 6 in. forged H-beam connecting rods with 150,000 psi rod bolts
* Forged pistons
* Hydraulic roller cam
* BluePrint aluminum heads with 64cc chamber
* Dyno test results shipped with engine
* 30-month/50,000-mile warranty

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Shipping & Delivery
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Effective Date: August 9, 2025

At X Factors Motorsports, we are committed to delivering your order quickly, securely, and affordably.


1. Processing Time

  • Orders are typically processed within 1–2 business days after payment is confirmed.

  • Orders placed on weekends or holidays will be processed on the next business day.


2. Delivery Times

  • Domestic Shipping (United States): Delivery takes 5–7 business days from the date of shipment.

  • International Shipping: Delivery times vary by destination and may take 7–21 business days depending on customs processing and local delivery services.


3. Shipping Rates

  • United States: Free standard shipping on all orders.

  • International: Shipping costs are calculated at checkout based on the delivery address, package weight, and destination country.


4. Carriers Used

We ship orders using trusted carriers such as UPS, FedEx, USPS, and DHL to ensure reliable delivery. Tracking numbers are provided for all shipments.

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