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Chevrolet LSX454R 7.4L 770HP Engine

SKU: 19260835

Quick Overview

Drag racers take note! Chevrolet Performance's new LSX454R crate engine delivers 770 horsepower that will help you stay in front of the competition. More than the most powerful LS engine in our portfolio, it is the most powerful crate engine we’ve ever offered!

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Availability: In stock

Only 1 left

Regular Price: £15,594.00

Special Price Excl. Tax: £12,495.00 Incl. Tax: £14,994.00

Chevrolet LSX454R 7.4L 770HP Engine is available for purchase in increments of 1

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Our engineers designed the LSX454R for the unique, high-rpm demands of drag racing. It is a high-compression, solid-roller combination that uses our new LSX DR cylinder heads.These 11-degree, six-bolt aluminum heads feature raised ports that provide tremendous airflow. We complement them with an exclusive, high-rise open-plenum intake manifold and a Dominator-type carburetor to complete the assembly.


The LSX454R’s bottom end includes our LSX Bowtie cylinder block and an all-forged rotating assembly. And while we rate the engine at 770+ horsepower in its naturally aspirated form, we know that there is room for more.


Use the LSX454R as the centerpiece of a new racecar built with our GEN V Camaro body-in-white for the ultimate modern drag-strip star. With 770+ horses under the hood, it will perform as good as it looks!

Tech Specs

Power: 750+ HP @ 7100 RPM, 680+ ft. lbs. of torque @ 7100 RPM
Displacement: 454 CID, 7.4L
Bore x Stroke: 4.185” x 4.125”
Compression Ratio: 13.1:1
Recommended Fuel: 110 Octane Minimum
Block: LSX Cast Iron with 6 bolt cross bolted main caps.
Crankshaft: 4340 Forged Steel
Connecting Rods: 4340 Forged Steel
Pistons: 4032 Forged Aluminum
Camshaft: Steel Mechanical Roller Tappet
Cam Lift: .738” Intake / .738” exhaust
Cam Duration @ .050”: 250 deg. Intake / 270 deg. Exhaust
Lobe Separation: 110 Degree
Cylinder Heads: 19166979 356-T6 Aluminum rectangular ports. Click link below for more specs.
Combustion Chamber: 50cc 
Valves: 2.250” Intake/ 1.625” Exhaust
Rocker Arms: Shaft Mounted with needle bearing fulcrum and tip, 1.9:1 Ratio
Balance: Internal
Reluctor: 58X
Maximum GM Recommended RPM: 7100


Engine Includes:
• Fully GM assembled long block
• Aluminum High Rise, Open Plenum 4 barrel Intake
• 1150cfm Holley Dominator Carb
• Harmonic Balancer
• Front timing cover

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