ATK GM 383 Stroker 415 HP HP94 Stage 1 Aluminum Head

ATK HP94 415 HP Stroker Performance Fitment

ATK GM 383 Stroker 415 HP HP94 Stage 1 Aluminum Head engines provide a high-torque high-performance crate engine solution for classic muscle car and vintage truck restorations. This 383ci stroker assembly features high-flow aluminum cylinder heads and a 9.7:1 compression ratio, engineered to deliver 415 horsepower for applications such as the Chevrolet Camaro, Chevelle, and C10 pickup. Built on a seasoned cast-iron block with a precision-ground hydraulic roller camshaft, this powertrain ensures superior valvetrain stability for heavy-duty street-strip use.

As a Stage 1 remanufactured long block foundation, this unit is designed for universal fitment in Small Block Chevy-equipped vehicles from 1955-1995. While the ATK HP94 includes an oil pan, builders must provide their own induction and ignition systems to complete the build. This engine is backed by a professional 1-Year limited warranty, providing long-term reliability for enthusiasts demanding maximum displacement and torque in a classic GM chassis.

Key Features of ATK High Performance HP94

• 6.3L 383ci displacement delivering 415 horsepower.
• High-flow aluminum cylinder heads for superior thermal management.
• Hydraulic roller camshaft optimizes valvetrain performance.
• 9.7:1 compression ratio designed for premium pump gas.
• Internal and external engine balance ensures smooth operation.
• Seasoned cast-iron block provides structural integrity.
• Standard 1-Year professional warranty included.

HP94 Include:

• Oil Pan