LSX454


KICK YOUR PERFORMANCE
INTO OVERDRIVE.

OFFER VALID 1/1/22 TO 12/31/22.

$250 rebate on the purchase of a Chevrolet Performance Transmission within 180 days after the purchase of any Chevrolet Performance Crate Engine

KICK YOUR PERFORMANCE
INTO OVERDRIVE.

OFFER VALID 1/1/22 TO 12/31/22.

$250 rebate on the purchase of a Chevrolet Performance Transmission within 180 days after the purchase of any Chevrolet Performance Crate Engine

PARTS INTENDED FOR COMPETITION USE ONLY.
Click for more details.

PARTS INTENDED FOR COMPETITION USE ONLY.
Click for more details.

PROPOSITION 65 WARNING.
Click for more details.

PROPOSITION 65 WARNING.
Click for more details.

An LSX with Big-Block power

With the LSX Bowtie block, we’ve built a 21st century 454 with our latest technology. It’s lighter and more compact than an original Big-Block 454.

PART NO. 19355573

WhyBuy

627 HP @6300 RPM

WhyBuy

586 LB-FT @5100 RPM

Super-tough 

The LSX454 is filled with an all-forged, super-tough rotating assembly and features a pair of our deep-breathing LSX six-bolt cylinder heads. It also comes dressed with great-looking, orange powder-coated valve covers with engraved “LSX454” logos.

Installation Guides

Find everything from vital data about your engine’s capabilities to how to install it into your build.

LSX454 Tech Specs

  • Part Number: 19355573
  • Engine Type: LSX-Series Gen-IV Small-Block V-8
  • Displacement (cu. in.): 454 (7.4L)
  • Bore x Stroke (in.): 4.185 x 4.125 (106.3 x 104.8 mm)
  • Block (P/N 19260099): LSX cast-iron with six-bolt, cross-bolted main caps
  • Crankshaft (P/N 19244018): 4340 forged steel with eight-bolt flange
  • Connecting Rods (P/N 19166964): 4340 forged steel
  • Pistons (P/N 19166958): Forged aluminum
  • Camshaft Type (P/N 19166972): Hydraulic roller
  • Valve Lift (in.): 0.648 intake / 0.648 exhaust
  • Camshaft Duration (@0.050 in.): 236° intake / 246° exhaust
  • Cylinder Heads (P/N 19354239): Aluminum LSX-LS7 port; with “as cast” 70-cc chambers
  • Valve Size (in.): 2.200 titanium intake / 1.610 hollow, sodium-filled exhaust
  • Compression ratio: 11.0:1
  • Rocker Arms (P/N 12579615 int): Investment-cast, roll trunnion
  • Rocker Arms (P/N 12579617 exh): Investment-cast, roll trunnion
  • Rocker Arm Ratio: 1.8:1
  • Recommended Fuel: Premium pump
  • Maximum Recommended rpm: 6500
  • Reluctor Wheel: 58X
  • Balanced: Internal

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Unless specifically noted to the contrary herein, vehicles equipped with Chevrolet Performance parts that are emissions-related may not meet U.S., Canadian, and state and provincial laws and regulations relating to motor-vehicle emissions. These parts are designed and intended for use in vehicles operated exclusively for competition: in racing or organized competition on courses separate from public streets or highways. Visit www.chevroletperformance.com/emissions for more details.