Drivetrain
The drivetrain is everything between the engine and the wheels — it's what takes the engine's power and puts it to the pavement. The transmission, clutch (or torque converter for automatics), driveshaft, and differential all play a role. Upgrading these components lets you handle more power, shift faster, and get better traction off the line.
Torque Converters
For automatic transmission Challengers, the torque converter is the fluid coupling between the engine and transmission (the auto equivalent of a clutch). A higher 'stall speed' converter lets the engine rev higher before the transmission engages, which is critical for drag racing launches — it puts you right in the powerband when you leave the line.
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