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BluePrint Engines Pro Series Chevy LS 376 C.I.D. 525 HP EFI Deluxe Dressed Long Block Crate Engines PSLS37651CTFK
Part Number: MLL-S0062
BluePrint Engines Pro Series Chevy LS 376 C.I.D. 525 HP EFI Deluxe Dressed Long Block Crate Engines
GM LS Compatible 376 c.i. Pro Series Engine - 525 Horsepower - Deluxe Dressed - Polished Pulley Kit - Holley Terminator X EFI System
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Estimated Ship Date: Dec 29, 2026 Would you rather pick it up?
Overview
BluePrint Engines Pro Series Chevy LS 376 C.I.D. 525 HP EFI Deluxe Dressed Long Block Crate Engines
BluePrint Engines Pro Series Chevy LS 376 c.i.d. 525 hp Holley Terminator X EFI deluxe dressed engines are a masterclass in modern performance and reliability, delivering a robust 525 hp and 460 lb.-ft. of torque, with a 10.7:1 compression ratio that ensures streetable power and high-output efficiency.
At the heart of this Pro Series engine are BluePrint's premium components, all working in concert with a nodular iron crankshaft, each chosen for strength and precision. Air and fuel management are handled by the Holley Terminator X Max system paired with a fabricated aluminum intake manifold, high-flow injectors, and a matching fuel rail kit. Tying it all together is a black or polished pulley kit delivering both form and function in a sleek, performance-ready package. Select the engine with the pulley finish preferred for your vehicle.
Block specs:
* Increased deck thickness and strength webbing
* Utilizes OEM LS3 front and rear covers
* Improved water jacket design
* Extended cylinder skirt
* One-piece rear main seal
* Priority main oiling
* 4.0622 in. bore
* 6-bolt main
Rotating assembly specs:
* Nodular iron crankshaft
* 3.622 in. stroke
* 6.098 in. connecting rods with 150,000 psi bolts
* BluePrint hypereutectic pistons
* Internally balanced front and rear
BluePrint LS3 aluminum cylinder heads specs:
* 69cc chamber
* 2.165 in. intake/1.590 in. exhaust valves
* 259cc intake/102cc exhaust runners
BluePrint hydraulic roller cam specs:
* .612 in. intake/.585 in. exhaust lift
* 225 degrees intake/238 degrees exhaust duration at .050 in. lift
* 113 degree lobe separation
Also includes:
* LS3 fabricated aluminum intake manifold
* Drive-by-Wire throttle body adds modern responsiveness
* LS swap oil pan ensures seamless integration
* Injectors and fuel rail kit
* Spark plugs and wires
* Harmonic balancer
* Throttle pedal
* Timing cover
* Valve covers
* Coil packs
* Black or polished pulley kit:
-- LS2-style water pump
-- One-wire 140-amp alternator
-- Peanut-style air conditioning compressor
-- Type II power steering pump with remote reservoir
Holley Terminator X Max features and benefits:
* Real time fuel map learning simplifies tuning
* On-board Bosch LSU 4.9 wideband control enables accurate AFR readings and closed loop tuning
* Eight high-impedance injector drivers ideal for stock LS and Holley EFI injectors
* Integrated 1-Bar MAP sensor for naturally aspirated or nitrous setups, with harness support for external higher bar sensors, if needed
* Four configurable inputs (12 V, Ground, 5 V, Frequency) and two outputs (Ground, PWM)
* Free PC Tuning Software via USB/CAN Interface for Full Laptop Control and Advance Setup
* Integrated 3.5 in. touch screen handheld with Setup Wizard, internal data logging, and real time gauge displays
* Terminator X Max ECU includes base timing map pre-configured for this engine
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