How do I choose a stall converter?
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 size stall torque converter do I need?
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 a good stall for a torque converter?
around 1,800-2,000 rpm
Stock torque converters generally have a stall speed around 1,800-2,000 rpm. Higher stall speeds become necessary when horsepower and torque happen at higher rpm ranges. You want stall speed and maximum engine torque to happen around the same rpm range.
How do I know if my torque converter has a stall?
“Flash stall” is when you, from a dead stop, press the gas pedal to wide open throttle (wot). Watch your tach needle, you will see the needle jump to a certain rpm, that is “flash stall”. A drag racing-style trans brake will give you closer to the true stall speed of a torque converter.
What does a 2500 stall converter do?
A 2,500 stall speed doesn’t mean you need to rev the motor to 2,500 rpm for the vehicle to move.” What it does mean in this case is 2,500 rpm is the limit at which the converter will hold back the engine speed if transmission output is prohibited.
What’s the difference between a stall converter and a torque converter?
Stall speed is the speed at which the converter holds back or limits the engine speed if the transmission output is prohibited. When your torque converter prevents the power transfer from your engine to your transmission, it increases the engine’s RPM stalls.
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 is the point of a stall converter?
When your torque converter prevents the power transfer from your engine to your transmission, it increases the engine’s RPM stalls. For example, when you press down on your gas pedal, the stall speed is the gap between where your vehicle ideals and begins to move.
What does higher stall converter do?
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. ft of torque with a stock camshaft will produce a 2,000 rpm stall speed when a 2,000 stall speed converter is used.
What does stall mean on torque converter?
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.
How do you calculate stall speed?
The formula is to calculate stall speed is: V = √( 2 W g / ρ S Clmax ) V = Stall speed m/s ρ = air density KG/m^3 S = wing area m^2 Clmax = Coefficient of lift at stall W = weight KG The formula accounts for altitude by input of the appropriate air density figure.
What is the stall speed of a torque converter?
In general, the desired stall speed should be 500-700 RPM below the engine RPM at peak torque. This ensures a margin for application for the torque converter to take off. You don’t want to have to floor your gas pedal and wait a few seconds for your vehicle to move. Think of it as a balancing act.