Overview:
This high-output 427 c.i. Small Block Ford–compatible BluePrint Engine delivers 541 horsepower and 519 lb-ft of torque, making it an excellent choice for aggressive street builds, restomods, and performance enthusiasts seeking a reliable powerplant with serious horsepower and torque. Built around a 9.5-inch deck height Windsor-based BluePrint high-strength cast iron block featuring a 4.125-inch bore, 4-bolt main caps, one-piece rear main seal, and a forged rotating assembly. It is topped with CNC-ported BluePrint Engines aluminum cylinder heads and a matched hydraulic roller camshaft, providing exceptional airflow and a broad, responsive powerband. With a 10.0:1 compression ratio, this engine is optimized for 91+ octane pump gas, delivering impressive performance without sacrificing drivability. Backed by BluePrint Engines’ industry-leading 30-month / 50,000-mile warranty.
The 427ci Small Block Ford achieved modern legend status through its use in the industry’s top Cobra and Cobra replica builders where it became known for producing massive power in lightweight chassis. These engines helped redefine the capabilities of the Windsor-based platform, particularly in high-end Cobra replicas and continuation-style builds. Weighing significantly less than a traditional big block, the 427 stroker enhances front-end balance, handling, and braking, making it a proven choice for performance-focused applications.
Description:
- Horsepower & Torque: 541 Horsepower / 519ft. lbs. Torque
- Compression Ratio: 10.0:1
- Aluminum Heads
- Hydraulic Roller Cam
- Forged Crank
- Forged Pistons
Block:
- NEW BluePrint Engines' High Strength Cast Iron Block
- 4-Bolt Main
- 4.125" Bore
- 1-Piece Rear Main Seal
- 9.500 Deck Height
Rotating Assembly:
- New Forged Crankshaft
- 4.000" Stroke
- Forged 6.250" Connecting Rods
- Forged Pistons
- Internally Balanced
Cylinder Heads:
- Aluminum Cylinder Heads
- 60cc Chamber
- 2.02" Intake / 1.60" Exhaust Valves
- 205cc Intake / 70cc Exhaust Runners
Cam Specs:
- Cam Type: Roller
- .608 Intake / .608 Exhaust Lift
- 248 Intake / 258 Exhaust Duration
- @.050-114 Degree Lobe Separation
Also Includes:
- Holley Sniper 2 EFI System - BPP550-510-3XX
- Ribbed Cobra Style Aluminum Valve Covers
- Aluminum Oval Air Cleaner with Cobra Script
- Harmonic Balancer
- Spark Plugs & Wires
- Timing Cover
- Powder Coated Oil Pan
- Thermostat and Thermostat Housing
- Oil Filter
- Plug Wire Separators
- EFI Fuel Pump Kit - BPP5267
- Polished Front Accessory Drive - BPP302FDACPS4
- Driver Side Standard Rotation Water Pump
- Type II Power Steering Pump
- Remote Power Steering Pump Reservoir
- 140amp 1-wire Alternator
- 7B10 Peanut Air Conditioning Compressor
Assembled with Complete 4R70W Automatic Transmission Package:
- Includes Electronic Transmission Controller
- Transmission built to 650 HP
- 2200-2600 Stall Torque Converter
- Flex plate
- Starter
- TPS harness included for integration with trans controller and EFI.
- 4 Speed, Overdrive transmission w/Lockup
- GEAR RATIOS
- First: 2.84 :1.
- Second: 1.55 :1.
- Third: 1.00 :1.
- Overdrive: 0.70 :1.
- Reverse: 2.32 :1.
Notes:
- Package Ships assembled as pictured.
- If this is being ordered for a Factory Five Vehicle, STOP and call us at 1-800-483-4263 for Proper Fitment Or visit FactoryFiveEngines.com

BETTER THAN THE REST.
At BluePrint Engines, customer satisfaction is our highest priority. Every engine is built using high-quality components, with each rotating assembly balanced to within two grams of specification. Before shipment, every crate engine is dyno tested and certified to ensure it is ready to deliver the horsepower and torque you expect.
To stand behind that level of quality, BluePrint Engines offers industry-leading warranty coverage, providing confidence and peace of mind whether the engine is installed by an individual or a professional installer. Our standard warranty is fully transferable, adding long-term value and reassurance for our customers.
Warranty Coverage Details:
- BluePrint Engines (including Builder Series)- Standard Warranty 30 months or 50,000 miles (parts and labor)*
- BluePrint Engines Extended Warranty- 48 months or unlimited miles (parts and labor)*
- Race / Motorsports Engines -No warranty
- Marine Engines- 12 months (parts and labor)
- Short Blocks-12 months (parts only)
- Bare Blocks- 6-Month Unaltered
- International Sales- Warranty coverage is handled by the in-country distributor
*Applies to eligible engine part numbers beginning with “B” or “P.” Warranty coverage is subject to terms and conditions. Proper installation and maintenance are required.
Please refer to full warranty documentation for complete details click here.
IT ALL COMES DOWN TO RESULTS.
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.
BRAGGING RIGHTS INCLUDED!
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)!