Engines and Components› Engines, Blocks and Components

BLUEPRINT ENGINES

LONGBLOCK

$15,860.29

SKU: B05J PSF4271RCT

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
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Overview

High-output 427 c.i. Small Block Ford–compatible BluePrint Engine delivering 541 horsepower and 519 lb-ft of torque. Ideal for aggressive street builds, restomods, and performance enthusiasts. Built with a 9.5-inch deck height Windsor-based BluePrint high-strength cast iron block (4.125-inch bore, 4-bolt main caps, one-piece rear main seal) and a forged rotating assembly. Features CNC-ported BluePrint Engines aluminum cylinder heads and a matched hydraulic roller camshaft for exceptional airflow and a broad powerband. 10.0:1 compression ratio, optimized for 91+ octane pump gas. Backed by a 30-month / 50,000-mile warranty. The 427ci Small Block Ford is known for producing massive power in lightweight chassis, making it a proven choice for performance-focused applications due to its lighter weight compared to traditional big blocks, enhancing front-end balance, handling, and braking.
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LONGBLOCK

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandBLUEPRINT ENGINES
Part NumberB05J PSF4271RCT

Videos

Ford Mustang Engine And Transmission Packages - BluePrint Engines Crate Engine Tech

Ford Mustang Engine And Transmission Packages - BluePrint Engines Crate Engine Tech

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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