Ram 2501 1955-1985 Chevy Aluminum Flywheel, 168 Tooth, Internal Balance, SFI, Each

If you're building an all-out competition car, then you need a lightweight flywheel that will allow the engine to rev quicker and not eat up a lot of power. RAM billet aluminum flywheels greatly reduce rotating weight to permit quicker revving and higher power output, but still retain enough mass to resist heat distortion that could adversely affect clutch performance. RAM billet aluminum flywheels are made in America and produced in house. All RAM flywheels are computer balanced within a ? oz., surface ground which results an optimum mating surface, and are ready to run out of the box. SFI-approved, these flywheels are CNC-machined from certified materials and have rugged steel friction-surface inserts. RAM's billet aluminum flywheels feature a ? in. thick friction insert to dissipate heat away without distortion. Technical note: As it spins, a heavy flywheel stores more energy than a lighter one. Engine and gearing combinations that require more power or inertia to make the car launch without bogging the motor, need heavier flywheels. However, heavier flywheels accelerate slower. Lighter flywheels create less inertia at launch, but accelerate quicker through the gears. To effectively use a lighter flywheel, you must consider the car's weight, operating rpm of the engine, and, most importantly, the gearing. Too little gear will cause the engine to 'bog' on launch.