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BluePrint Builder Series 598/741HP Standard Edition Carbureted Crate Engine and 4L80E Trans Combos B598KB4L8 598 c.i. Series, Carbureted, Automatic Transmission /w Black Pulley Kit. Incl. 30 month/50,000 warranty & Dyno

SKU: MLLB598KB4L8

Engine and Transmission Combos

BluePrint Builder Series 598/741HP Standard Edition Carbureted Crate Engine and 4L80E Trans Combos B598KB4L8 598 c.i. Series, Carbureted, Automatic Transmission /w Black Pulley Kit. Incl. 30 month/50,000 warranty & Dyno

SKU: MLLB598KB4L8

Engine and Transmission Combos
A$57,755.90
Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.

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Description


Data: v2 - Desc: v4.2 - Upd: 2026-11-08 21:18:11

Data: v4.2 - Upd: 2026-11-09 07:40:39

Features

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Blueprint Engines
StreetFX SKU mllB598KB4L8
SFX Item ID 5183200
Accounting SKU mll-B598KB4L8
Manufacturer SKU B598KB4L8
Manufacturer UPC 00887753983428
Alternative References B598KB4L8, MLL-B598KB4L8

598 c.i. Standard Edition Builder Series, Carbureted, 4L80E Automatic Transmission /w Black Pulley Kit. Incl. 30 month/50,000 warranty & Dyno

BluePrint Standard Edition Builder Series combos pair engine and transmission, eliminating guesswork, making it easier to gain the performance you desire. These combos match a carbureted GM big block-compatible 598 c.i.d. engine with a 4L80E automatic transmission enabling the production of an awesome 741 hp and 703 lb.-ft. of torque with a compression ratio of 10.5:1. They are available with a polished or black pulley kit. Select the one preferred.

BluePrint high-strength cast iron engine block:
• 4.600 in. bore
• 4-bolt main
• One-piece rear main seal
• Standard deck
• Mechanical fuel pump provision

Rotating assembly:
• BluePrint forged crankshaft
• Stroke: 4.500 in.
• Forged 6.480 in. connecting rods
• Forged pistons
• Internally balanced front and rear

BluePrint aluminum cylinder heads:
• 119cc chamber
• 2.30 in. intake/1.88 in. exhaust valves
• 358cc intake/125cc exhaust runners
• .300 in. raised exhaust port vs. an OEM casting
• Verify header/exhaust clearance

Hydraulic roller camshaft:
• .647 in. intake/.647 in. exhaust valve lift
• 258 intake/266 exhaust duration at .050 in. of lift
• 112 degrees lobe separation angle (LSA)

Ignition timing:
• 38 degrees total timing

4L80E automatic transmission package:
• Electronic transmission controller
• Lockup capability
• 3,800+ stall torque converter
• Flexplate
• Starter

Also included:
• Holley 1250cfm carburetor
• Intake manifold
• Pro Series Ready Run distributor
• Electric fuel pump
• Harmonic balancer
• Thermostat and thermostat housing
• Valve covers
• Spark plugs and wires
• Timing cover
• Oil pan
• Polished or black front pulley kit:
-- Reverse rotation short water pump
-- Type II power steering pump with remote reservoir
-- 140-amp one-wire alternator

Product Attributes
BrandBluePrint Engines
Manufacturer's Part NumberB598KB4L8
Part TypeEngine and Transmission Combos
Product LineBluePrint Builder Series 598/741HP Standard Edition Carbureted Crate Engine and 4L80E Trans Combos
UPC00887753983428
Crate Engine FamilyChevy Big Block
Engine Assembly StyleLong block
AssembledYes
Intake Manifold IncludedYes
Carburetor IncludedYes
Throttle Body IncludedNo
Cylinder Heads IncludedYes
Cylinder Head MaterialCast aluminum
Distributor IncludedYes
Oil Pan IncludedYes
Valve Covers IncludedYes
Timing Cover IncludedYes
Water Pump IncludedYes
Harmonic Balancer IncludedYes
Spark Plugs IncludedYes
Spark Plug Wires IncludedYes
Flexplate IncludedYes
Flywheel IncludedNo
Transmission Controller IncludedYes
Torque Converter IncludedYes
Wiring Harness IncludedNo
Computer IncludedNo
QuantitySold as a kit.
NotesCarburetor included is a Gen 3 Dominator 1,250 cfm carburetor with manual choke. Short deck block. Oil pan has a rear sump.
Special AttentionIncludes a black finish accessory drive system with a reverse rotation short water pump, type II power steering pump, remote power steering reservoir, 140 amp 1-wire alternator, 7B10 peanut style air conditioning compressor.

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