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GMP-19244611-CB - Pace Exclusive LSX 454 630HP Crate Engine

This product may require vehicle validation(s) for proper fitment. Please contact us to confirm correct vehicle fitment and usage.

Availability: Discontinued July 2015
Shipping: FREE 48 State Shipping


Pace Exclusive LSX 454 630HP Crate Engine

It's BAD and of course it's Orange.

An engine with 454 cubic inches will always be associated with higher performance Chevys, and that tradition continues with the all new LSX454 crate engine. We started with the new LSX bowtie block, stuffed it with an all-forged, super tough rotating assembly, and bolted on a pair of new GM deep breathing LSX six-bolt cylinder heads.

The new LSX six bolt cylinder heads are based on the race-derived LS7 heads that help deliver more than 500 horsepower in the Corvette Z06. They enable tremendous low end torque and great high RPM power. The Pace LSX 454 is delivered fully assembled with engine controller and harness. It also comes dressed with great looking, all new orange powder-coated valve covers with "LSX 454" logos engraved and painted in black.

Keeping with the LS tradition, this LSX454 requires no more space under the hood than production LS engines.

Note: this engine has the ignition coils mounted on the back of the cylinder heads and requires 2.75” of clearance between firewall and engine.

Power: 630 HP @ 6000 RPM, 605 ft. lbs. of torque @ 4900 RPM
Displacement: 454 CID, 7.4L
Bore x Stroke: 4.185” x 4.125”
Compression Ratio: 11:1
Recommended Fuel: 92 Octane
Block: LSX Cast Iron with 6 bolt cross bolted main caps
Crankshaft: 4340 Forged Steel, with 8 bolt flange
Connecting Rods: 4340 Forged Steel
Pistons: Forged Aluminum
Camshaft: Steel Hydraulic Roller Tappet
Cam Lift: .635” Intake / .635” exhaust
Cam Duration @ .050”: 236 deg. Intake / 246 deg. Exhaust
Lobe Separation: 110 Deg
Cylinder Heads: Aluminum LSX LS7 Rectangular style ports
Combustion Chamber: 70cc
Valves: 2.200” Intake/ 1.610” Exhaust
Rocker Arms: Cast Roller Trunion, 1.8:1 Ratio
Balance: Internal
Reluctor: 58X
Maximum GM Recommended RPM: 6500

Engine Includes:
• Fully GM assembled long block
• Harmonic Balancer
• Front timing cover
• Holley Retro-Fit Oil Pan
• Oil Dipstick and Tube
• Chevrolet Performance engine controller and harness
• Ignition Coils & Custom Coil Brackets
• Spark Plugs, Wires & Looms
• Chevrolet Performance LSX Single Plane Intake Manifold
• AED 750CFM Carb with regulator & inlet plumbing
• New GM Water Pump

General Motors limited 2 year / 50,000 mile parts & labor warranty. Click on Document tab above for full details.

Related Engines and Components:
Pace Professional Engine Dyno Break-In & Testing
Ram 8-bolt Manual Trans Flywheel
GM 8-bolt Auto trans Flexplate
LS Engine Swap Packages
Complete Manual Trans Install Kits
LSX454 with LS7 EFI
LSX454 Long Block
LS Serpentine Accessory Drive Systems and Components

Application List



  • GMP-19244611-CB
  • GMP-19244611-CB
  • PACE Performance
  • Discontinued July 2015
  • New


Shipping Information

  • Item Requires Shipping
  • 500.0 lbs.
  • FREE 48 State Shipping

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