what's going on guys today's video we are discussing the black magic behind the torque converter and what is going to be the best stall speed for you and guys if you are new here to the channel please consider subscribing of course it helps grow our channel here and I also want to get some feedback from you guys Oh what you guys would like to see featured here so let's just go ahead let's just jump into the video right now let's discuss torque converters and why you would even want to raise the stall speed of your torque converter so in an OEM application typically the RPM range of a OEM converter is 1,800 to 2,000 RPM this is done for probably two things maybe more but the two main things driver comfort 99% of the world does not want some high stall speed converter they want that driver comfort something low stall when they accelerate from a stoplight also for fuel efficiency so the lower the RPM the less fuel you burn the less fuel you burn obviously for today's you know carbon emission standards very very important so if you decide that you do want to go ahead and raise that stall speed what that will do for you is get you to a point where your acceleration will be in a better torque curve or your power area so for like a towing application which I would consider to probably be like the next segment or step-up from an OEM application probably about 2800 rpm stall speed is probably the most I would go for a towing application the the higher stall speed the more heat that generates and obviously with more heat that is a transmission killer so we want to keep that in check especially in a towing application the next segment up from towing is going to be probably that 3,000 to 3600 rpm area this is going to be where you're gonna find most of your you know average type street cars a very good area where you'll actually start seeing some pretty significant changes may be in your sixty foot of the racetrack so if you've got a typical you know three four five six seven hundred horsepower streetcar that's probably where you're gonna want to stay if you still want to retain some of that Street comfort from there you know we can start moving up the spectrum a little bit you know you can start getting to that 4,000 to 4,500 rpm stall speed on a regular streetcar this is where you are going to start seeing some of that that a typical driver comforts start going away you are going to notice when you leave stop lights and stop signs there is going to be some significant slip there so that's something that you're just going to figure out if you are willing to compromise some drivability for semi T at the racetrack obviously this depends on how much you drive your car the next thing that you need to consider especially when you start getting into like camshaft changes is a lot of times when you do change camshafts that's going to move your power band up so instead of what may have been a 3400 to 6000 rpm window is now gonna go to a 4500 to 7500 rpm window when you do that you will need to change a stall speed to go with that so guys a lot of this torque converter building is going to be based off of weight of the car gear ratio power you're making you know camshaft and what rpm that that power makes so consider this kind of a package thing we really need to have the engine side of things dialed in to know what sort of stall speed you're gonna do for your torque converter I'm going to encourage you to never buy an you know off-the-shelf out-of-the-box converter that may get you closed in if you talk with a good torque converter company if you're choosing they'll probably recommend something that may be on the shelf that they know will be closed for your application but nine times out of ten I'm gonna recommend you guys go and spec you out a custom-built converter a lot of times they have a worksheet that's gonna list all your information of your car what your application is and what you can be doing with it that's truly going to give you the best performance if that's what's going to be most important to you so guys I hope this information is helpful there's obviously a lot more to this but just want to give you a kind of a little short summary as to why you would want to change it or convertor and again a lot of times in a drag racing world ET wise I mean you could knock three tents off easy just in the 60-foot which if you can pick up three tents in the 60-foot that's going to be a lot more at the quarter-mile mark so guys I hope you find this information helpful if you'd like to me to expand on this further drop a comment down below and let me know obviously we're also gonna have our social media links down in the description and as always guys appreciate you watching we'll catch you later
