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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.
How do I know what size stall converter I have?
The only way to know the true stall speed of a converter is with a transbrake however a flash stall can give a rough idea of what it is. From a dead stop, mash the throttle and watch the tach. The tach will jump up to an rpm before the car really starts to move.
What is the best torque converter?
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- #1. Moroso 38765 Torque Converter Bolt for Turbo 350/400.
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- #3. Allstar Performance ALL26900 10″ Diameter 350/400 Transmission 2700-3000 RPM Stall…
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- #5. ARP 2407302 Torque Converter Bolt Kit.
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What happens when the torque converter goes out?
A malfunctioning torque converter can have a shudder that comes from the transmission. Its job is to smoothly convert engine torque into hydraulic pressure that your transmission uses to engage and shift gears. When the torque converter starts malfunctioning, you may feel shuddering and even slipping in overdrive.
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.
Will a new torque converter give me more power?
You will not be gaining any horsepower, rather you will be recovering horsepower that would have been normally lost with your stock TC. In addition, a stronger TC will have a higher stall speed. This will allow better launches when you are brake torquing or flashing the TC.
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.
How do I know if my torque converter is bad?
When the torque converter starts malfunctioning, you may feel shuddering and even slipping in overdrive. You usually notice your car shuddering because it feels like it’s vibrating. Your car will vibrate even when you’re not going very fast. The shuddering makes the car lag and is very noticeable.
When to use a torque converter in a street car?
If choosing a torque converter for use in a street car, you might want to select a torque converter with a stall speed that is below the engine RPM at 70 mph, since this is where your engine will spend a lot of its time. An exception to this theory is if the transmission/converter is equipped with a lock-up feature.
What should the stall speed be on a torque converter?
Stall speeds are a great way to rate torque converters performance level. The range level will tell you a lot about what to expect from the torque converter. In you select a 2700-3000 converter, it should be able to footbrake stall the torque converter to about 2700 rpm considering the automobile setup.
When do you need a torque converter for drag racing?
In a high performance application, particularly a car used for drag racing, you want your torque converter to stall at the RPM where your engine has its peak torque output, giving you the hardest launch possible.There are also two types of stall; the foot brake stall and the flash stall.
How can I tell if my torque converter is working?
Trap speed will let you know if the torque converter is efficiently operating when going through traps. Usually, 100 rpm of converter slippage equals a loss of one and a half miles per hour through the traps. Trap speed rpm will tell you if the converter is operating efficiently when going through the traps.