500HP
A strong all-around performer with a broad torque curve and excellent drivability. Built on a 4-bolt aftermarket block with a 3.400″ stroke and 4.125″ bore, it’s a reliable upgrade over the 347 with more cubes and strength.
530HP
Same solid foundation as the 500 HP version, but upgraded with CNC-ported heads for improved airflow and a noticeable bump in power—ideal for those wanting more top-end without sacrificing street manners.
550HP 7000RPM
Built for high-RPM thrills, this street/strip beast features CNC heads, a solid roller cam, and shaft rockers. It’s designed to scream at 7,000 RPM and deliver serious top-end power for the enthusiast who is okay sacrificing street manners for high RPM power.