Mopar SFI Flywheel 6 Hole w/Sm. GM Pattern

The TCI Mopar SFI Flywheel 6 Hole with Small GM Pattern (Part No. 149162) is a purpose-built flexplate engineered for high-performance Mopar V8 engine swaps and street/strip applications requiring SFI 29.1 certification. Constructed from steel and rated for internal balance configurations, this 6-bolt crank attachment delivers the rigid support and regulatory compliance demanded by builders integrating classic Chrysler big-blocks into modern drivetrain platforms or optimizing existing powerplants for increased output.

SFI 29.1 certification ensures this Mopar SFI flexplate meets safety standards for high-RPM operation and catastrophic failure containment. The 6-hole bolt pattern secures directly to internal-balance Mopar V8 crankshafts, while the small GM pattern accommodation allows flexibility in transmission selection—accommodating TH350, TH400, and Powerglide transmissions commonly paired in engine-swap builds. Steel construction provides durability under repeated load cycles typical of drag racing, street performance, and sustained high-load towing scenarios. Weighing 6.6 lbs, the compact 14.3 x 1.2 x 14.6 inch dimensions fit standard engine bays without modification.

This flexplate targets engine builders, restoration shops, and performance enthusiasts executing Mopar V8 swaps into non-original platforms or rebuilding original applications with upgraded drivetrains. The dual-pattern design addresses the common cross-platform integration challenge: matching a proven Chrysler engine to modern or alternative transmission architectures while maintaining SFI safety compliance. Shops and individual builders rely on SFI-rated components to satisfy insurance, sanctioning body, and customer liability requirements in race environments and street-driven high-performance vehicles.

TCI Engineering is recognized in the powertrain parts sector for transmission and drivetrain component manufacturing. This Mopar SFI flywheel reflects the brand's focus on OEM-quality and racing-spec fitment standards, positioning it alongside established competitors in the engine-swap and restoration market.