Description: 

• HP & Torque: 625 HP / 565 FT LBS
• Compression Ratio: 11:1
• Aluminum Heads
• Hydraulic Roller Cam
• Forged Crank
• Forged Pistons

Block:

• OEM Block Machined in the USA!
• 6-Bolt Main
• 4.060" Bored to 4.069
• 1-Piece Rear Main Seal

Rotating Assembly:

• New Forged Crankshaft
• 4.125" stroke
• Forged 6.125" connecting rods
• Forged Pistons
• Internal

Cylinder Heads:

• BluePrint Aluminum Cylinder Heads -PS8015
• 72cc chamber
• 2.165" intake/1.600" exhaust valves
• 259cc intake/102cc exhaust runners

Cam Specs:

• Roller
• .624 intake .624 exhaust lift
• 239 intake 255 exhaust duration
• @ .050, 114-degree lobe sep.

Ignition Timing:

• ECM supplied with calibration
• Not capable of transmission control
• Transmission controller required

Also Includes:

• 87mm LT4 DBW Throttle Body
• LS3 intake manifold
• 42# injectors and returnless fuel rail
• Harmonic balancer
• Valve covers, retro fit oil pan and timing cover
• Coil Packs
• All sensors required for engine to run
• Spark plug wires & wiring harness
• Gas pedal
• Complete Front Accessory Drive Premium Black Coated
• Alternator, A/C, P/S, All belts and pulleys. 

Notes:

• This engine requires a non-weighted flex plate/flywheel.
• BluePrint Engines recommends a 2200+ RPM stall converter.
• 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.
• The Included LS controller package is for engine control only. Does not contain any transmission or body control. The ECU comes with calibration that is optimal for our engine, however, please note that vehicle parameters such as gearing, tire size, vehicle weight, air intake, headers, etc. may necessitate additional tuning once installed into your specific vehicle. The included ECU is unlocked for further refinement at your local dyno shop if required.
• BluePrint Engines Recommends Air Intake Kit  to ensure correct MAF calculations and Dyno calibration are maintained with the provided ECU / tuning.

Your BluePrint engine was dyno tested with the parts and specifications listed below.  If you prefer to install a different part, your engine may not produce the horsepower recorded on your dyno sheet. 

Part Number: PSLS4272CTFKB

Fuel Delivery Type: Electronic Fuel Injected

Spark Plug: AC Delco 41-985

Spark Plug Gap: .040"

Harmonic Balancer: Non-Weighted

Flexplate/Flywheel: Non-Weighted

Stall Converter: 2200+

Intake Manifold: LS3 Car

Fuel Recommendation: 91- 93 Octane

Timing (Initial/Total Advance): Ignition timing and spark advance are controlled by Powertrain Control Module

Firing Order: 1,8,7,2,6,5,4,3