ATK GM 540 Big Block 660 HP HP42C Stage 3 Carbureted

ATK HP42C 660 HP Carbureted Crate Motor

ATK GM 540 Big Block 660 HP HP42C Stage 3 Carbureted engines deliver an elite high-output big block powertrain solution for extreme performance restomods and racing applications. This massive 8.8L 540ci big block features high-flow aluminum cylinder heads and is engineered to produce a verified 660 horsepower. Built on a seasoned cast-iron block with professional-grade assembly standards, this engine is a direct performance fit for elite muscle cars like the Chevrolet Chevelle and heavy-duty GM trucks requiring maximum mechanical power.

Integrating this turnkey performance powerplant is simplified by the inclusion of a pre-tuned carburetor, aluminum intake manifold, and HEI distributor. The ATK HP42C arrives as a complete Stage 3 package, backed by a professional 1-Year limited warranty to ensure long-term structural reliability. This high-displacement big block is designed for enthusiasts who demand elite horsepower and consistent performance, utilizing high-performance components to maintain peak volumetric efficiency in any street or strip environment.

Key Features of ATK High Performance HP42C

• 8.8L 540ci big block displacement delivering 660 horsepower.
• High-flow aluminum cylinder heads for superior thermal management.
• Stage 3 complete build includes pre-installed induction and ignition.
• Seasoned cast-iron block foundation for maximum structural integrity.
• Precision-balanced assembly ensures smooth high-RPM power delivery.
• Direct performance fit for classic GM big block vehicle platforms.
• Backed by a professional 1-Year limited warranty.

HP42C Include:

• Intake Manifold
• Carburetor
• Distributor