Chevy / GM • 6L80 Torque Converters

Quality by Design. Monster by Nature.

Monster 6L80 Single-Clutch torque converter with billet cover
Starting at$399

6L80 Single-Clutch (to ~600 HP)

  • Billet Cover for increased strength and durability
  • Optimized Stall Options for towing and power transfer
  • Ideal up to ~600 HP; great for medium-duty towing & performance
  • Upgraded Impeller Hubs (hardened/forged)
  • Warranty: 12-Month Parts • 12-Month Labor
Monster 6L80 Multi-Clutch torque converter with billet cover
Starting at$999

6L80 Multi-Clutch (to ~900+ HP)

  • Multi-clutch Billet Cover for high-torque applications
  • Bonded Plates & increased lock-up area for lower apply pressure
  • Upgraded Forged Piston for robustness under load
  • Recommended for Heavy Towing and high-power builds up to ~900+ HP
  • Warranty: 12-Month Parts • 12-Month Labor

Which 6L80 Converter is right for you?

  • Power: Single-clutch up to ~600 HP; Multi-clutch up to ~900+ HP.
  • Use Case: For heavy towing or frequent lock-up under load, choose Multi-clutch.
  • Efficiency: Added clutch area reduces slip/heat; precision balance lowers vibration.
  • Install Essentials: Verify cooler health/flow and fluid level at temp after install.

Single vs Multi—how to choose?

Under ~600 HP and moderate towing, Single-clutch is a strong upgrade. For heavy towing or higher power (~900+ HP), choose Multi-clutch.

Do both include a billet cover?

Yes—both models include a billet cover for strength.

Warranty?

12-Month Parts / 12-Month Labor on both converters.

6L80 Knowledge Hub

Everything you need to choose, install, and protect your 6L80 converter

6L80 Converter Setup: Stall, Lockup, Cooling & Install Best Practices

Quick Nav: Stall SelectionLockup StrategyCooling & FluidInstall Checklist

Stall Selection

Match stall to the engine’s torque curve, vehicle weight, gearing, tire size, and intended use. Too low a stall can lug; too high increases heat. We verify your choice against your combo before shipping.

Lockup Strategy

Multi-clutch adds lock-up area for durability under load and reduced slip—recommended for heavy towing or high-power builds. Single-clutch suits up to ~600 HP and moderate towing.

Cooling & Fluid

Heat is the enemy. Verify strong cooler return flow, consider an auxiliary cooler, and use fresh full-synthetic DEXRON-VI. Set fluid level at operating temperature.

Installation Checklist (quick hits)

  • Confirm converter fully seated before install
  • New flexplate bolts & torque to spec
  • Flush or replace cooler & lines; check return flow
  • Set fluid level warm; road test and recheck
  • Monitor slip & temps on first drives

6L80 Tech FAQs

Will Multi-clutch feel different?

Expect firmer, more consistent lock-up under load and better heat control—ideal for towing/hauling or high power.

Break-in?

Normal driving with varied load for the first 200–300 miles. Avoid extended WOT towing pulls until temps and behavior are validated.

*HP figures are guidance; vehicle weight, tires, gearing and tuning affect capacity.