4L80E Torque Converters
The GM 4L80E is a heavy-duty four-speed automatic derived from the legendary TH400. Built to handle serious torque, it's the go-to transmission behind big-power LS builds, turbocharged combinations, tow rigs and heavy-duty trucks.
Choosing the right torque converter for a 4L80E can dramatically improve:
- Towing capability and transmission temperatures
- Launch and acceleration under load
- Drivability with big power
- Durability behind power adders
Boss Hog Torque Converters builds performance converters engineered for 4L80E applications, from heavy-duty tow rigs to 800+ horsepower race combinations, matched to your exact setup.
Common Applications
Choosing Your Stall Speed
1,800–2,400 RPM
Best for
Towing, heavy trucks and daily-driven HD builds
2,400–3,000 RPM
Best for
Street performance and mild big-power builds
3,000–3,800 RPM
Best for
Cammed and boosted street/strip combinations
3,800+ RPM
Best for
Turbo, high-horsepower and dedicated race applications
Frequently Asked Questions
Is the 4L80E good for towing?
Yes, the 4L80E is a heavy-duty transmission well suited to towing. For tow rigs, a lower-stall converter keeps temperatures down and improves efficiency.
Can a 4L80E handle 800+ horsepower?
With the right build and a properly matched converter, the 4L80E is a popular choice behind 800+ HP combinations. Tell us your power level and we'll spec it.
Recommended Series
Night Stalker
Street-friendly performance for daily-driven and mildly-modified builds.
Shop the series →Street Bandit
Street & strip converters for cammed engines and weekend racing.
Shop the series →Out Law
Maximum-effort converters for turbo, nitrous and dedicated race combos.
Shop the series →Need help choosing a 4L80E converter?
Use our Converter Finder or talk with a Boss Hog specialist to get matched to your exact combination.
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