Turbo choice depends on your power goals and Cummins engine:
12-Valve Mechanical Fummins (most common):
- 400-500 HP: S300 single turbo (S362, S366) - great street/tow balance
- 500-650 HP: Larger S300 or S400 single (S369, S472, S475) - more aggressive
- 650+ HP: Compound turbo system (S300/S400 or S400/S400) - best for heavy towing at high power
24-Valve VP44 or Common Rail Fummins:
- 400-550 HP: S300 single or VGT upgrade - excellent daily/tow
- 550-700 HP: S400 single or S300/S400 compounds - serious performance
- 700+ HP: S400/S400 compounds with big injectors, dual CP3s, etc.
6.7L Cummins Fummins (less common but awesome):
- 450-600 HP: VGT upgrade or S300 single - maintains good drivability
- 600-750 HP: S300/S400 compounds - optimal for this platform
Hood clearance considerations:
- Single turbos usually fit under stock Ford hoods
- Compound setups may require cowl hood or hood modification (depends on Ford year and turbo sizes)
- We can provide height measurements before you order
Not sure? Tell us: Ford year/model, which Cummins engine, your power goals, typical use (towing weight, daily driving, etc.). We'll recommend the right turbo configuration.