Overview

BluePrint Builder Series LS427/605HP Standard Edition EFI Crate Engine and T56 Transmission Combos

BluePrint Builder Series LS427/605HP Standard Edition EFI crate engine and T56 transmission combos take the guesswork out of matching up an engine and transmission for your ride. Featuring a fuel injected Chevy LS small block-compatible 427 (c.i.d.) engine that produces 605 horsepower, this standard edition builder series includes a T56 manual transmission and pulley kit (pulley kit is an optional add-on, depending on the specific engine package you purchase). The aluminum BluePrint Engines cylinder heads help produce a nice 11.1 compression ratio, with assistance from the hydraulic roller camshaft, forged pistons, and forged crankshaft. Altogether, this assembly produces 565 lbs.-ft. of torque. When you need or want a new LS powertrain for your ride, go with the authority in crate engines and their BluePrint Builder Series LS427/605HP Standard Edition EFI crate engine and T56 transmission combos.

Other product features, items, and specifications:

* 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
* One-piece rear main seal
* 4.0665 in. bore
* Priority main oiling
* 6-bolt main

Rotating Assembly:

* Forged crankshaft
* Stroke – 4.125 in.
* Forged 6.125 in. connecting rods
* Forged pistons
* Internally balanced (front and rear)

Cylinder Heads:

* BluePrint cast aluminum PS8015 models
* Chamber – 70cc
* Valves are 2.165 in. intake and 1.600 in. exhaust
* Exhaust runners are 259cc intake and 102cc exhaust

Camshaft Specs:

* Hydraulic roller
* Intake valve lift – 0.624 in.
* Exhaust valve lift – 0.624 in.
* Intake duration at 0.050 in. of lift – 239
* Exhaust duration at 0.050 in. of lift – 255
* Lobe separation angle (LSA) – 114 degrees

Ignition Timing:

* ECM supplied calibration

Assembled T56 6-speed Transmission Package:

* McLeod Super Street Pro dual-disc clutch
* Steel Bell housing
* Billet flywheel
* Engine guard
* Starter
* Gear ratios are 2.66:1 (first), 1.78:1 (second), 1.30:1 (third), 1.00:1 (fourth), 0.80:1 (fifth), and 0.63:1 (sixth)

Other Components:

* MLL-BLS4273KBT56 and MLL-BLS4273KT56 engine/trans combos include front accessory drive with LT1 style 150-amp alternator, LT1 Style water pump, Type II power steering pump with baffled edges, and compact style A/C compressor
* Holley Terminator X Max - Gen IV Complete ECU/Harness EFI System
* LS Swap oil pan, windage tray, pickup screen
* BluePrint Engines fuel injectors and rail
* Low-profile swap oil pan
* DBW throttle body
* Throttle pedal, and sensors
* GM plastic intake manifold
* Spark plugs and wires
* Harmonic balancer
* Coil packs

Important Notes: Retro fit oil pan will fit most 1955-1995 GM front engine, RWD, V8 cars. Not for use in pollution-controlled vehicles or in dry sump applications. BluePrint Engines recommends air intake kit BPPLS01013 to ensure correct MAF calculations and Dyno calibration are maintained with the provided ECU / tuning. Engine/Trans Package ships assembled.

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