GM Big Block Compatible 598 c.i. Engine and 4L80E Automatic Transmission - 741 Horsepower - Standard Edition Builder Series with Black Pulley Kit - Carbureted
GM Big Block Compatible 598 c.i. Engine and 4L80E Automatic Transmission - 741 Horsepower - Standard Edition Builder Series with Black Pulley Kit - Carbureted
GM Big Block Compatible 598 c.i. Engine and 4L80E Automatic Transmission - 741 Horsepower - Standard Edition Builder Series with Black Pulley Kit - Carbureted
GM Big Block Compatible 598 c.i. Engine and 4L80E Automatic Transmission - 741 Horsepower - Standard Edition Builder Series with Black Pulley Kit - Carbureted
GM Big Block Compatible 598 c.i. Engine and 4L80E Automatic Transmission - 741 Horsepower - Standard Edition Builder Series with Black Pulley Kit - Carbureted
GM Big Block Compatible 598 c.i. Engine and 4L80E Automatic Transmission - 741 Horsepower - Standard Edition Builder Series with Black Pulley Kit - Carbureted
GM Big Block Compatible 598 c.i. Engine and 4L80E Automatic Transmission - 741 Horsepower - Standard Edition Builder Series with Black Pulley Kit - Carbureted
GM Big Block Compatible 598 c.i. Engine and 4L80E Automatic Transmission - 741 Horsepower - Standard Edition Builder Series with Black Pulley Kit - Carbureted
GM Big Block Compatible 598 c.i. Engine and 4L80E Automatic Transmission - 741 Horsepower - Standard Edition Builder Series with Black Pulley Kit - Carbureted
GM Big Block Compatible 598 c.i. Engine and 4L80E Automatic Transmission - 741 Horsepower - Standard Edition Builder Series with Black Pulley Kit - Carbureted

GM Big Block Compatible 598 c.i. Engine and 4L80E Automatic Transmission - 741 Horsepower - Standard Edition Builder Series with Black Pulley Kit - Carbureted

SKU: B598KB4L8

GM Big Block Compatible 598 c.i. Engine and 4L80E Automatic Transmission - 741 Horsepower - Standard Edition Builder Series with Black Pulley Kit - Carbureted

SKU: B598KB4L8

HP & Torque: 741 HP / 703 FT. LBS

Cylinder Heads: BluePrint Engines Aluminum Cylinder Heads

Compression Ratio: 10.5:1

Camshaft: Hydraulic Roller Cam - .647 Intake / .647 Exhaust Lift and 258 Intake / 266 Exhaust Duration @ .050 – 112 LSA

Pistons: Forged

Crankshaft: Forged Crank – 4.500" Stroke and Forged 6.480" Rods

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Pictured with a Polished Front Drive Accessory Kit come with a Black Front Drive Accessory Kit.

Description:

  • Horsepower & Torque: 741 Horsepower / 703 FT LBS
  • Compression Ratio: 10.5:1
  • Aluminum Heads
  • Hydraulic Roller Cam
  • Forged Crank
  • Forged Pistons

Block:

  • BluePrint Engines High Strength Cast Iron Block
  • Manufactured and Machined in the USA!
  • 4-Bolt Main
  • 4.600" Bore
  • 1-Piece Rear Main Seal
  • Mech Fuel Pump Provision: Yes
  • Standard Deck

Rotating Assembly:

  • New BluePrint Forged Crankshaft
  • 4.500" Stroke
  • Forged H-beam 6.480" Connecting Rods
  • Forged Pistons
  • Internally Balanced Front and Rear

Cylinder Heads:

  • BluePrint Aluminum Cylinder Heads - PS8012
  • 119cc Chamber
  • 2.30" Intake / 1.88" Exhaust Valves
  • 358cc Intake / 125cc Exhaust Runners
  • Cylinder Heads Feature a .300 in. Raised Exhaust Port vs an OEM Casting
  • Must Verify Header / Exhaust Clearance

Cam Specs:

  • .647 Intake / .647 Exhaust Lift
  • 258 Intake / 266 Exhaust Duration
  • @ .050-112 Degree Lobe Separation

Ignition Timing:

  • 38° Total Timing

Also Includes:

  • Valve Covers
  • Oil Pan
  • Timing Cover
  • Harmonic Balancer
  • Intake Manifold
  • 1250cfm Holley Carburetor
  • Distributor
  • Spark Plugs and Wires
  • Front Accessory Drive with Alternator, A/C Compressor, Power Steering Pump, and Water Pump, 
  • Electric Fuel Pump
  • Thermostat and Thermostat Housing

Assembled with Complete 4l80e Automatic Transmission Package:

  • 4L80E Complete Package with Electronic Controller Included
  • W/Lockup Capability
  • 3800+ Stall Torque Converter
  • Flex Plate
  • Starter

4L80E Gear Ratios:

  • 1: 2.482
  • 2: 1.482
  • 3: 1.00
  • 4: 0.750
  • R: 2.077

Notes:

  • The front accessory drive on this engine fits many vehicles, however it is the customer responsibility to accurately measure and confirm fitment.  Note this is a low-profile design, but things such as power steering hoses, alternator wiring, and additional fittings/fabrication may be required on some vehicles.


 

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: B598KB4L8

Fuel Delivery Type: Carbureted, 1250cfm Recommended

Spark Plug: BPP7938 NGK 7938 BKR5E (.750 inch reach, 14mm thread, 5/8 hex, plug)

Spark Plug Gap: .035"

Harmonic Balancer: BPP454I - Internally balanced

Flexplate/Flywheel: Internally balanced

Stall Converter: 2500-2800 rpm

Intake Manifold: N/A

Fuel Recommendation: 91

Timing (Initial/Total Advance): 34 degrees total timing

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

Notes: Recommend BluePrint oil for break in - Part number BPP710

Header Partners: 
Click here for our Header Partners and recommendations.

Click here to download a copy of the Installation Guide that came with your BluePrint engine.

BETTER THAN THE REST.

The satisfaction of our customers is our highest priority at BluePrint Engines. We use quality components to balance your engine's rotating assembly within two grams of spec. We dyno test your crate engine and certify that it's ready to deliver horsepower and torque.

We give your BluePrint engine the industry's best-in-class warranty for 30-months / 50,000 miles — with the extra confidence only BluePrint can provide. Our warranty applies to individual or professional installations and is fully transferable.

For a detailed overview of our warranty, click here.

IT ALL COMES DOWN TO RESULTS.

We make sure we hit our target horsepower and proper torque with every crate engine. We use an advanced computerized balancer to get our rotating assemblies within two grams, ensuring silky smooth power over the entire RPM range. That's precisely why our engines sound and run better than our competitors.

BRAGGING RIGHTS INCLUDED!

A comprehensive, dyno-generated printout showing these critical specs will accompany your delivered engine. No more guessing or wondering what your installed engine's real-world peak horsepower and torque ratings actually are. Any doubters in the crowd? Simply flash 'em your dyno results!

This engine will be dyno tested before it ships to you at no additional charge (others charge $500)!

RECOMMENDED PRODUCTS:
BluePrint Engines Crate Engine Break-In Oil — 1 Quart
TrueBlue Performance Octane Boost
BluePrint Engines TrueBlue Performance Octane Booster
BluePrint Engines 10w30 Engine Oil - 1 Quart
BluePrint Engines TrueBlue UltraCool Antifreeze Coolant CONCENTRATE
BluePrint Engines TrueBlue Power Steering Fluid
BluePrint Engines TrueBlue Transmission Fluid UNIVERSAL ATF/MTF
GM SB and BB Compatible Oil Filter
Liquid Filled Fuel Pressure Gauge - 0-15 psi