Custom Torque Converters

Not every performance build fits into a catalog. Many builds require a converter designed specifically around the combination.

Not Every Vehicle Fits A Catalog

This is especially true for:

Turbocharged vehicles
Supercharged applications
Nitrous combinations
Dedicated race cars
LS swaps
Specialty builds

What Makes a Custom Converter Different?

A custom converter is engineered around:

Engine power curve
Camshaft profile
Vehicle weight
Rear gear ratio
Tire size
Intended use

rather than generic assumptions.

Custom Applications We Build

Turbo LS
Twin turbo combinations
Supercharged builds
Nitrous applications
Drag racing
Heavy-duty performance trucks

Why Builders Choose Boss Hog

For more than 50 years, our team has worked directly with racers, transmission professionals and performance enthusiasts to create converter solutions for unique combinations.

Request a Custom Converter

Give us the basics of your combination and our team will build a recommendation around it. No detail is too small.

Contact Information

Name *

Phone Number *

Email *

City / State *

Your Combination

Not sure about a specification? Give us what you know. Our team can help with the rest.

Vehicle Year / Make / Model *

Weight of the Vehicle *

Transmission *

Big Block or Small Block *

Approx. horsepower *

Cubic Inch or Liter. *

Carbureted or Fuel Injected Size *

Spacer Plate or Cold Air intake *

What Kind of Intake is it *

Dual Plane or Single Plane *

Cast or Aluminum Heads *

Valve Size Intake *

Valve Size Exhaust *

CC Chamber Rating for Heads *

Compression Ratio *

Headers Size at the Head / Inlet *

Are you running Open Headers *

What Kind of Exhaust – True Dual / H-Pipe / X-Pipe *

Exhaust Pipe Diameter inches *

What is the Gross Valve Lift of your Cam – Intake *

What is the Gross Valve Lift of your Cam – Exhaust *

What is the Duration at 0.050 – Intake *

What is the Duration at 0.050 – Exhaust *

What is the Lobe Separation (LS) *

What is the Center Line (CL) *

What is the Advertised RPM Range of the Cam *

What is the Rear Gear Ratio *

What is the Rear Tire Height in inches (based on actual tire size) *

Do you have Turbo / Supercharger - Lbs of Boost *

Do you have a Tans Break *

Do you have Power adders *

What is the Intended use *

What is your target Stall Speed

Current converter / diameter (if any) *

If you’re unsure what stall speed you need, leave it blank. That’s what our recommendation is for.

Tell Us About Your Build

What are you trying to accomplish? *