Chevrolet Performance's COPO crate engines are engineered for NHRA's Stock Eliminator and Super Stock classes, offering sportman racers a range of factory-developed-and-assembled racing engines.
The 350, 396 and 427 naturally aspirated engines make a race car eligible for NHRA Stock Eliminator classes from AA/S to D/S, based primarily on weight and horsepower ratings. The 350 S/C engine makes cars eligible for AAA/S and AA/S classes. Consult the NHRA rule book at nhra.com for class and compliance guidelines.
Chevrolet Performance engineers designed and tested the engines with the same methods used to develop production engines, ensuring their performance and durability; and each engine is hand-assembled in a specially built facility.
COPO 350 - 350 hp
The entry-level COPO racing engine is a bit of a sleeper, that has capabilities far beyond what the modest specs might indicate. It’s high-flow LS3 cylinder heads help deliver high rpm power, that will move the car through the top-end lights quickly.
Displacement: 350 cu in (5.7L)
Compression Ratio: 10.7:1
Cylinder Block: LS7 cast aluminum
Bore x Stroke (in): 4.125 x 3.270
Crankshaft: Forged steel
Connecting Rods: Forged steel
Pistons: Forged dome
Cylinder Heads: LS3 aluminum
Intake Manifold: Holley Hi-Ram
Camshaft Type: Hydraulic roller
Camshaft Lift (int./exh.): .525/.525-inch
Camshaft Duration (int./exh.): 226/236 deg. @ .050-inch