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The Daily Insight

Do I need a stall converter?

Author

Rachel Newton

Updated on May 09, 2026

Most street performance cars running your typical "performance" cam should be running a stall converter in the 2,800 - 3,000 RPM area. The basic rule of thumb is; if your engine "comes alive" at say, 3,500 RPM, then you want a stall converter with about 3,500 of stall to it.

Furthermore, does a stall converter help?

Stall converters allow the car to launch in it's torque curve and get off the line much harder than a car that has much less stall.

Also, what is the purpose of a high stall torque converter? A higher stall torque converter will let your car accelerate better because the car will be taking off at the rpm range where it is making the most power.

Just so, what exactly does a stall converter do?

A torque converter has three stages of operation: stall, acceleration, and coupling. Stall is when the transmission is in gear, but the brakes prevent the car from moving. At stall, the torque converter can produce maximum torque multiplication, called stall ratio, if sufficient input power is applied.

Do you need a stall converter with a manual transmission?

- Quora. No a manual transmission does not have a tourque converter it uses a clutch. A tourque converter is made so that it will mostly disengage at idle speed so the engine can run at idle with the transmission still in gear.

Related Question Answers

Is a 2500 stall converter Streetable?

To answer your question a 2500 stall will be no problem on the street. You will get slightly worse gas mileage.

What does a 3200 stall converter do?

Stall speed os the max slippage speed the torque converter will allow, ie. break torqueing your car will hold the rpm at 3200 where your cam makes its max power. The idea is that to make the best launch from a standing start, you need enough rpms to spin the wheels and not let the engine bog down.

How do I know if I need a bigger stall converter?

For mild performance cars with something like a 350 HP engine, a 2,200 - 2,400 stall is about right. The basic rule of thumb is; if your engine "comes alive" at say, 3,500 RPM, then you want a stall converter with about 3,500 of stall to it.

What is the difference between a low stall and a high stall torque converter?

For many street trucks that are used for towing, daily driving, and performance, owners choose a lower-than-stock stall converter. While high-stall converters are the ticket for racing, they generate lots of heat due to high slip percentages and can create a huge rpm drop when lockup is engaged.

What stall converter should I use?

When choosing the stall speed that is right for your application, a rule of thumb is that the advertised stall speed will need to be at least 500 rpm higher than the beginning of the camshaft's powerband. All aftermarket camshafts are delivered with a recommended RPM operating range.

What causes an automatic to stall?

The idle circuit in an automatic vehicle controls the air that is circulated when the car idles. If this circuit malfunctions, then the vehicle may not have the right ratio of oxygen to operate. It will stall because the ratio is not optimal for the combustion of the fuel.

What are the symptoms of a bad torque converter?

6 Signs of a Failing Torque Converter
  • Loss of Acceleration.
  • Slipping Between Gears.
  • Vehicle Won't Shift at All.
  • Transmission is Overheating.
  • Transmission Fluid Leak.
  • Bad Transmission Fluid.

What is aircraft stall speed?

Stall speed is the minimum speed at which an airplane must fly to produce lift. If an airplane's speed drops below its stall speed, it won't produce lift.

What is a flash stall converter?

Flash stall is the amount of engine RPM (or flash) that is observed upon initial acceleration under load. Flash stall speed is one of the most useful ways to truly gauge the stall speed characteristics of a torque converter and how those characteristics will influence the acceleration potential of a vehicle.

Does a torque converter add horsepower?

An automatic transmission in general has a way of soaking up horsepower, but the torque converter can take a potent combination and turn it into a pig when the rubber meets the road. And while stall speed is important for a good launch, it's also a place for horsepower to swirl down the drain.

What is the difference between a clutch and a torque converter?

The main differences between centrifugal clutches and torque converters are: Centrifugal clutches connect the engine to the transmission, while torque converters allow the engine and transmission to run independently from one another.

Do you need high stall torque converter?

Converter stall speed must be high enough to put the engine into the torque range where it can most efficiently launch the car. If converter stall speed is too low, the car will be lazy leaving the line; if too high, there'll be excessive high-gear slippage—either case adds time to your e.t.

Is there a torque converter in a manual transmission?

Your vehicle's torque converter is the same as the clutch of a vehicle with a manual transmission. However, unlike a manual transmission vehicle, it uses fluid to transmit power to the transmission preventing your engine from stalling and allowing the transmission to change.

What is indicated when the stall speed is too high?

If the stall speed rpm is still high, then the forward clutch is defective. The test can also be made with the selector lever in R. If the stall speed is too high, it indicates slippage in either the direct/reverse clutch or in the 1st/reverse clutch.

What is the stall speed of a stock torque converter?

around 1,800-2,000 rpm