Chevrolet

Chevrolet Performance LSX454 7.4L 627 HP / 586 LB-FT - Big Block Long Block

£16,105.14 GBP inc VAT
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SKU: 19417357

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Chevrolet Performance LSX454 7.4L 627 HP / 586 LB-FT - Big Block Long Block
£13,420.95 GBP

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Engine Details

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Engine Description

21st Century 454 with Modern LSX Technology

The LSX454 continues the legendary 454 tradition with modern LSX technology, producing 627 horsepower at 6,300 rpm and 586 lb-ft of torque at 5,100 rpm. This engine combines classic displacement with contemporary engineering.

Specifications:

  • Engine Type: LSX-Series Gen IV Small-Block V-8
  • Displacement: 454 cu in (7.4L)
  • Bore x Stroke: 4.185 x 4.125 (106.3 x 104.8 mm)
  • Power: 627 horsepower at 6,300 rpm
  • Torque: 586 lb-ft at 5,100 rpm
  • Compression Ratio: 11.0:1

Engine Construction:

  • LSX cast-iron block with 6-bolt, cross-bolted main caps
  • 4340 forged steel crankshaft with 8-bolt flange
  • 4340 forged steel connecting rods
  • Forged aluminum pistons
  • All-forged, super tough rotating assembly

Cylinder Head Technology:

  • Aluminum LSX-LS7 port cylinder heads with 70cc chambers
  • 2.200 titanium intake valves / 1.610 hollow, sodium-filled exhaust valves
  • Based on race-derived LS7 heads from Corvette Z06

Camshaft Specifications:

  • Hydraulic roller camshaft
  • Valve lift: 0.648 intake / 0.648 exhaust
  • Duration (@0.050): 236° intake / 246° exhaust

Special Features:

  • Orange powder-coated valve covers with "LSX 454" logos engraved in black
  • Lighter and more compact than traditional big blocks
  • Takes up no additional space compared to factory LS engine

Installation Notes:

  • Long block configuration - intake manifold not included
  • Use LSX-LS7 single plane carbureted intake manifold (P/N 19244033)
  • Valve covers do not include ignition coil mounting provisions
  • Due to high compression ratio, not compatible with forced induction
  • Oil pan and oil pump pickup not included
  • 8-bolt crankshaft flange may require adapter for some transmissions
Notes:
This engine has the LSX 8-bolt crank flange. Assembly does not include any electronics or an oil pan. This engine is not designed, nor intended to be used in any marine applications. Designed for pre-1976 street vehicles or any off-road vehicle. Engines installed in vehicles registered and normally operated outside of the United States carry no warranty. Aftermarket or custom coil brackets must be used.

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Engine Specifications

Actual Engine Displacement
7.4L/454
Air Cleaner Included
No
Assembled
Yes
Brand
Chevrolet Performance
Cam Style
Hydraulic roller
Carburetor Included
No
Computer Included
No
Crate Engine Cylinder Head Material
Aluminum
Crate Engine Family
Chevy LS
Cylinder Heads Included
Yes
Distributor Included
No
Engine Balance
Internal
Engine Block Material
Cast iron
Engine Type
Big Block
Engine Type
LS
Flexplate Included
No
Flywheel Included
No
Harmonic Balancer Included
Yes
Intake Manifold Included
No
Manufacturer's Part Number
19417357
Oil Pan Included
No
Part Type
LSX Racing Engine
Product Type
LSX Racing Engine
Rear Main Seal Style
1-piece
Spark Plug Wires Included
No
Spark Plugs Included
No
Supercharger Included
No
Throttle Body Included
No
Timing Cover Included
Yes
Valve Covers Included
Yes
Water Pump Included
No
Wiring Harness Included
No
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Package Contents

Kit includes all necessary components. Please refer to manufacturer specifications for detailed package contents.