BluePrint Engines GM LS Compatible 427 c.i. Pro Series Engine - Power Adder - Long Block (PART #BPE-BPMS4271LS)

BluePrint Motorsports engines are built for maximum performance and are intended for extreme duty race applications. If this engine is used in a street application our normal 30 month, 50,000-mile warranty applies, if used in sanctioned racing no warranty, expressed, or implied.

BluePrint Motorsports introduces the ultimate 427ci LS Chevy-compatible long block, purpose-built for maximum boosted horsepower. Whether you’re chasing wins on the drag strip, sliding through drift circuits, tackling off-road trails, or carving up autocross courses, this engine delivers the perfect blend of power and reliability. At its foundation is a high-strength LSX-style cast-iron block, designed to handle extreme boost from nitrous, superchargers, or turbos.

Blocks:

• BluePrint Engines High Strength Cast Iron (LSX Style) Block
• Increased Deck Thickness and Strength Webbing
• Utilizes OEM LS3 Front and Rear Covers
• Improved Water Jacket Design
• Extended Cylinder Skirt
• 1-piece Rear Main Seal
• Priority Main Oiling
• 4.0695" Bore
• 6-bolt studded mains
• Billet Main Caps

Cylinder Heads:

• BluePrint Aluminum Cylinder Heads -PS8020
• LSX Style 6 Bolt Studded Heads
• 70cc Chamber
• 2.165" Intake / 1.600" Exhaust Valves
• 259cc Intake / 102cc Exhaust Runners

Rotating Assembly:

CCH9405 (Not Included) Customer req to adjust heat range/gap per their fuel type and aspiration.

Stall Converter:

Customer should match engine output and car setup to find best converter.

Included items:

• This engine does NOT come with a Fuel Injection ECU and Wiring Harness
• Harmonic Balancer
• LS Swap Oil Pan
• Valve Covers
• Timing Cover

Notes:

• BluePrint Motorsports engines are built for maximum performance and are intended for extreme duty applications. Because of the high-stress nature of their use, these engines are sold without any warranty, expressed, or implied.