Ram Clutches 1557 Pontiac Internal Balance 166 Tooth Flywheel

RAM billet steel flywheels deliver the uncompromising performance and long term reliability required for modern street performance applications. Each flywheel is precision machined, surface ground, and dynamically balanced to exacting tolerances, ensuring a perfect fit right out of the box. The robust steel construction provides the ideal inertia for smooth launches and exceptional low speed drivability.

Designed for performance enthusiasts, engine builders, and swap specialists, RAM steel flywheels feature a serviceable ring gear and meet all SFI safety specifications. Application specific options support popular engine swap platforms—including LS, LT, Coyote, and Hemi—as well as Tremec transmission conversions. Whether upgrading for street performance, track use, or a custom build, RAM delivers the premium flywheel solution trusted by professionals. RAM billet steel flywheels are engineered and manufactured in the USA. When only the best will do- Choose RAM.

• Fits GM applications
• Center hole diameter 2.070"
• Internal balance
• 166 tooth ring gear
• Clutch bolt patterns: GM 10.5", 11" clutches with 11.625", 12.625" bolt circles 3/8-16 thread, Ford Long Style 11" clutches with 12.375" bolt circle, 3/8-16 thread
• 0.865" thickness crank flange to friction surface
• 35 pounds
• Meets SFI 1.1 specifications
• Made in the USA