All Watson Racing rotating assemblies are quality controlled to ensure that they are within specifications. All include: 4340 forged crankshaft, pro state-of-the-art Hines balance, pin fit, JE pistons with pins & locks, Speed Pro/C & A file fit or custom rings, Federal Mogul race bearings.

• NOS 572 - 648cu.in. Dart Big Chief: Lunati 4340 pro crank (any stroke); MGP aluminum rods; JE 15:1 pistons; skirts milled; pin oilers; aluminum buttons & gas porting; custom ring package; Federal Mogul race bearings; internal balance.
• NOS 557 - 615cu.in. Dart 360/Brodix-5: Lunati 4340 pro crank (any stroke); MGP aluminum rods; JE 14:1 or 15:1 pistons; skirts milled; pin oilers; aluminum buttons & gas porting; custom ring package; Federal Mogul race bearings; internal balance.