Mopar SFI Flywheel 6 Hole w/Sm. GM Pattern

The TCI Mopar SFI Flywheel 6 Hole with Small GM Pattern is engineered for serious engine builders and high-performance enthusiasts looking to swap or upgrade their drivetrain while maintaining critical safety certifications. This purpose-built flywheel bridges the gap between classic Mopar engine architecture and modern GM transmission patterns, making it an ideal choice for unconventional powerplant combinations in hot rods, restorations, and custom builds. Whether you're installing a Mopar engine in a GM-pattern transmission application or vice versa, this flywheel delivers the versatility needed without sacrificing structural integrity or SFI compliance.

Manufactured to SFI (Society of Automotive Engineers International) certification standards, this six-hole flywheel balances precision engineering with reliable performance across a wide RPM range. The small GM bolt pattern ensures secure engagement with GM-series transmission bells and torque converters, while the Mopar-compatible mounting face accommodates Chrysler, Dodge, and Plymouth engine blocks without modification. At just 6.6 pounds, the compact design minimizes rotating mass to reduce parasitic drag on the engine, improving throttle response and fuel efficiency while maintaining the flywheel's ability to absorb and store rotational energy for smooth power delivery during acceleration and gear changes.

This flywheel is essential for builders executing cross-platform engine swaps—particularly those combining classic Mopar small-blocks or big-blocks with modern or retro-fit GM transmissions in street rods, classic car restorations, and performance drag applications. Installation requires proper alignment and torque-to-spec fastening; working with an experienced mechanic ensures correct balance and concentricity to prevent vibration and drivetrain damage. The SFI certification provides assurance that the component meets sanctioning body standards for bracket racing and high-speed testing, making it suitable for both street use and competition environments where safety compliance is mandatory.