Quite Simply  The Most Powerful Crate Engine Ever from Chevrolet Performance
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!

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!

LSX454R TECH SPECS
Part Number: 19260835
Engine Type: LS-Series Small Block V8
Displacement (cu. in.): 454 (7.4L)
Bore x Stroke (in.): 4.185 x 4.125 (106.3 x 104.8 mm)
Block (P/N 19244057): LSX Cast Iron with 6-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 6-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

LSX454R Warranty Detail PDF