PSLS4272CTF GM LS 427ci Dress Retrofit FI Engine, Fuel Injected

Name: PSLS4272CTF GM LS 427ci Dress Retrofit FI Engine, Fuel Injected
Brand: BLUEPRINT ENGINES
SKU: 138-PSLS4272CTF
Price: 16049.00 USD
Availability: InStock

^$16,049⁰⁰

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Ships on Sep 03, 2026

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Retrofit Engines

Fuel Injected
625 HP, 565 TQ
Cast Iron Block

Built using new block and Blueprint heads, along with forged crank, rods, and pistons. Includes performance hydraulic roller cam and lifters, upgraded roller rockers, universal oil pan, GM intake, fuel injectors, rails, drive-by-wire throttle body, matching throttle pedal, sensors, coil packs, wiring harness, and new ECM with custom tune installed. Water pump and front accessory drive pulleys NOT included.
Recommended Stall Converter: 2200+ RPM
Recommended Fuel: 91 Octane
New block with 1-piece rear main seal
New Blueprint Cylinder Heads p/n 138-PS8015 with roller rocker arms
Rotating Assembly
Forged Crankshaft: 4.125" Stroke
Forged Connecting Rods: 6.125" Length
Mahle Forged Pistons
11:1 Compression
Internally Balanced (Balancer Included)
Camshaft Specs
Hydraulic Roller
Duration at .050' Lift: 239 Intake, 255 Exhaust
Lift: .624' Intake, .624' Exhaust
Lobe Separation: 114°
Other Features
GM L92 Intake
Drive-by-wire throttle body with matching throttle pedal
Oil Pan #809-19212593
ECM with custom tune
Fuel Delivery: GM fuel rails and injectors
Ignition: GM coil packs and plug wires
Spark Plugs: ACDelco 41-985
Engine Break-In Procedure
Use or break-in oil or conventional (non-synthetic) multi-viscosity oil with zinc additive for the first 500 miles of operation. Avoid hard acceleration for sustained periods. Periodically change the engine speed while driving to help seat the rings. While the engine is running, be sure to check oil pressure and coolant temperature, and check for fluid leaks, such as oil, transmission fluid, fuel, and coolant/antifreeze. Also listen for any unusual sounds. Should you hear an unusual sound, shut the engine off, check for the source, and correct it.
Engines with flat tappet cams only - Start the engine and bring it to 2,000 RPM. Get the engine running smoothly. Then vary the engine speed from 1,800-2,200 RPM in a slow acceleration/deceleration cycle for 30 minutes. This is necessary to provide adequate oil splash and lifter rotation to properly mate each lifter to its lobe.
At 500 Miles change the engine oil and filter using conventional (non-synthetic) oil. After 6,000 miles, synthetic oils can be used in your engine. For flat tappet cam engines, continued use of oil with zinc or a zinc additive for the life of your engine is recommended.

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

7.0 Liter LS Power

Blueprint Engines GM LS Compatible 427 ci. ProSeries Crate Engines provide modern performance and reliability. These 427 ci. crate engines are designed and built in-house to provide options for the daily cruiser to all-out performance.

Part TypeEngine

Product LineBlueprint Engines GM LS 427 ci. ProSeries Crate Engines

BrandBLUEPRINT ENGINES

Package Height34.0

Package Width35.75

Package Length44.0

Weight501.0 PG

Part CategoryPerformance Parts

Part FitmentSemi Universal

Vendor Part NumberPSLS4272CTF

Package Qty1

Package TypeEA