Through December 31, get a $250 mail-in rebate on all Chevrolet Performance crate engines.

Our most powerful LS engine ever 

Quite simply, the LSX454R drag racing engine is the most powerful LS crate engine ever from Chevrolet Performance – and it’s designed to do one thing: help you win races with great durability.

PART NO. 19260835


776 HP @7000 RPM


649 LB-FT @5100 RPM

Strip Sensation 

This 13.1:1, naturally aspirated and single Dominator-fed big-inch LS engine is officially rated at 776 horsepower at 7,000 rpm and 649 lb.-ft. of torque at 5,100 rpm. It breathes through our high-flow LSX DR six-bolt cylinder heads that have 313cc intake runners.

LSX454R Tech Specs

  • Part Number: 19260835
  • Engine Type: LS-Series 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 cylinder head attachment
  • Crankshaft (P/N 19244018): 4340 forged steel
  • Connecting Rods (P/N 19166964): 4340 forged steel
  • Pistons: (P/N 19166958): 4032 forged aluminum
  • Camshaft Type (P/N 19166975): Mechanical roller
  • Camshaft Lift (in.): .738 intake / .738 exhaust
  • Camshaft Duration (@.050 in.): 250° intake / 270° exhaust
  • Cylinder Heads (P/N 19166979): Drag race cylinder heads six-bolt LSX aluminum
  • Valve size (in.): 2.250 x 6.370 intake / 1.625 x 6.400 exhaust
  • Compression Ratio: 13.1:1
  • Rocker Arms (P/N 19201808): Shaft-mounted with needle bearing fulcrum and tip
  • Rocker Arm Ratio: 1.9:1
  • Recommended Fuel: Race fuel (110 octane minimum)
  • Maximum rpm: 7100
  • Reluctor Wheel: 58X
  • Balanced: Internal

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Unless specifically noted to the contrary herein, vehicles equipped with Chevrolet Performance Parts may not meet Federal Motor Vehicle Safety Standards and emissions regulations and should not be operated on public roads. Chevrolet Performance customers are responsible for ensuring their use of Chevrolet Performance complies with applicable federal, state, and local laws, regulations, and ordinances. Many parts intended for racing or other “off-highway” use are not designed or tested for crashworthiness or to meet the safety needs of the motoring public, and may adversely affect the original intended performance or handling characteristics of the vehicle. These parts are designed and intended to be used with experts supervising their installation and use, to help assure the proper and safe operation of the vehicle.

  • See participating U.S. dealer or authorized powertrain reseller for details and rebate form, which must be postmarked by 1/31/18. Rebates are available to customers who have purchased the parts detailed above at a participating Chevrolet, Buick, GMC, or Cadillac dealer or a powertrain retailer located in the United States. See rebate form for eligible parts and details. Allow 6 to 8 weeks for delivery of debit card. Offer valid 11/1/17 to 12/31/17. Rebate form and details available at

  • The Manufacturer's Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees and optional equipment. Click here to see all Chevrolet vehicles' destination freight charges.