This BluePrint Engines 427 cubic inch GM LS Pro Series crate engine is a base dressed, fuel-injected build rated at 605 horsepower and 565 lb-ft of torque. It is built on a cast iron LSX-style 6-bolt main block with a forged crankshaft, forged dished pistons, LS3-style aluminum heads, and a hydraulic roller cam, and it comes with a Holley Terminator X Max ECU and harness carrying BluePrint calibration, a drive-by-wire throttle body, injectors, coils, and a GM plastic intake manifold.
Specifications:
- Displacement: 427 c.i. (7.0L)
- Horsepower: 605 HP
- Torque: 565 lb-ft
- Bore: 4.0685 in
- Stroke: 4.125 in
- Compression ratio: 11:1
- Block: High-strength cast iron LSX-style, increased deck thickness and strength webbing, extended cylinder skirt, priority main oiling, improved water jacket, 6-bolt main, 1-piece rear main seal, uses OEM LS3 front and rear covers
- Crankshaft: Forged, 4.125 in stroke
- Connecting rods: Forged, 6.125 in
- Pistons: Forged, dish, 22cc
- Cylinder heads: BluePrint aluminum LS3-style PS8015, 69cc chamber, 2.165 in intake / 1.590 in exhaust valves, 259cc intake / 102cc exhaust runners
- Camshaft: Hydraulic roller, three bolt, .624 in intake / .624 in exhaust lift, 239/255 duration at .050, 114 deg LSA
- Induction: Fuel injected: Holley Terminator X Max EFI with DBW throttle body (BPP12191019), GM plastic intake manifold, and 42 lb injectors
- Engine management: Holley Terminator X Max Gen IV Complete ECU/Harness EFI System with BluePrint calibration and pre-configured base timing map
- Balance: Internally balanced front and rear
- Fuel: 91+ octane
- Part number: PSLS42730CTF
What's Included: This is a base dressed, fuel-injected engine with the Holley Terminator X Max ECU and harness. It comes with: Holley Terminator X Max Gen IV Complete ECU/Harness EFI System; LS Swap Oil Pan - Windage Tray - Pick Up Screen; Fuel Injectors (42 lbs. @ 58 psi); DBW Throttle Body (BPP12191019); Water Pump (BPPLS126WP); Throttle Pedal, and Sensors; GM Plastic Intake Manifold; Spark Plugs & Wires; Harmonic Balancer; Coil Packs; Fuel Rail. Transmission control needs an additional harness such as BPP558405, which is not included. The engine requires a non-weighted flex plate or flywheel.
Engine Platform: Built to the GM LS platform (LSX-style block, BluePrint Pro Series).
Note: Specifications and included components on this listing come from the closest matching BluePrint configuration, the 605 horsepower base dressed Holley Terminator X EFI engine with GM plastic intake (BluePrint SKU PSLS4273CTF). Confirm details for part number PSLS42730CTF before ordering.
Compliance: Not for use on pollution-controlled vehicles or in dry sump applications.
Prop 65 Warning: This product can expose you to chemicals known to the State of California to cause cancer and reproductive harm. For more information visit www.P65Warnings.ca.gov.
FAQ
What comes on the PSLS42730CTF base dressed engine?
It includes a Holley Terminator X Max Gen IV Complete ECU/Harness EFI System, an LS swap oil pan with windage tray and pick up screen, 42 lb at 58 psi fuel injectors, a DBW throttle body (BPP12191019), a water pump (BPPLS126WP), a throttle pedal and sensors, a GM plastic intake manifold, spark plugs and wires, a harmonic balancer, coil packs, and a fuel rail. Transmission control needs an additional harness such as BPP558405, which is not included.
How much power does it make?
It is rated at 605 horsepower and 565 lb-ft of torque with 11:1 compression, and the specified fuel is 91+ octane.
What ECU and harness come with it?
A Holley Terminator X Max Gen IV Complete ECU/Harness EFI System with BluePrint calibration is included, with a pre-configured base timing map for this engine. BluePrint warns that running the Holley setup wizard erases the BluePrint calibration.
What flywheel or flex plate does it need?
The engine requires a non-weighted flex plate or flywheel.
Is this engine legal for use on a pollution-controlled vehicle?
No. BluePrint states it is not for use in pollution-controlled vehicles or in dry sump applications.
