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#1 |
Registered User
Join Date: Aug 2014
Location: Sacramento, CA
Posts: 145
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How does a torque converter work?
I was wondering if someone can explain how a torque converter works? If I'm shopping for one what should I be looking for? How does the stall benefit me?
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#2 | |
Cluster King
![]() Join Date: Nov 2012
Location: Junction City, OR
Posts: 5,263
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Re: How does a torque converter work?
Quote:
This will explain everything. You will want to look for a company that has a good reputation building them to last without failure such as B&M or Coan. If you contact one of the major camshaft manufactures, they can tell you which stall speed is best for your combination. It will be based on your vehicle weight, rear end gear ratio, tire size, cam shaft as well as horse power and torque of your engine. Some will have opinions based on their own experience. Hope this helps Tom
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Contact me on all of your gauge cluster needs. I specialize in restoration, repair and parts sales for 67-72 Chevy and GMC trucks. email me at tbonegarris@yahoo.com I am also a dealer for Counterpart for gauge cluster parts only. Also see my facebook page, CG&C |
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#3 | ||
Registered User
Join Date: Feb 2000
Location: Center City, MN, USA
Posts: 3,254
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Re: How does a torque converter work?
Quote:
Quote:
Think of two fans. One plugged in and power on, blowing at the 2nd one. The 2nd one turns from the air forced across it from the first one. In your car/truck, the first one is coupled to the crank shaft on your engine. The second one is coupled to the drive shaft. Instead of air between the two "fans" you have hydraulic fluid - or transmission fluid. Manufacturers can design them such that they slip - don't cause the drive shaft to turn - at a higher speed. For racing guys you can take an engine that produces more torque at a higher rpm, put a high stall speed torque converter in it, buzz it up higher at the line, then take off in your engine's power band. If you want better fuel economy, you want the lowest stall speed you can live with. Also all the energy has to go some place. In high stall speed converters that energy is converted to heat in the transmission fluid. If you're running around town in a vehicle with a high stall speed you need all kinds of extra transmission cooling to keep that heat from destroying your tranny.
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'70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN |
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#4 | |
Registered User
Join Date: May 2009
Location: Motor City
Posts: 9,194
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Re: How does a torque converter work?
Quote:
K
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Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/ |
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#5 | |
Account Suspended
Join Date: Jan 2007
Location: Tucson
Posts: 2,183
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Re: How does a torque converter work?
Quote:
If you shop for one, look for a builder that has a good reputation like JW Performance, B&M etc. I've run Johnny Winters converters for a very long time. None better and he will rebuild it if it fails. If you want more info go here: http://www.dragracingonline.com/tech...wtorque_1.html Last edited by Fitz; 12-01-2014 at 10:39 AM. |
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#6 |
Registered User
Join Date: Aug 2014
Location: Sacramento, CA
Posts: 145
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Re: How does a torque converter work?
So it sounds like if i have a stock 350 theres no need to shop for a high performance torque converter? Or at least if im looking for performance thats definitely not the first upgrade right?
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#7 | |
Registered User
Join Date: May 2009
Location: Motor City
Posts: 9,194
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Re: How does a torque converter work?
Quote:
If you will be doing timed competitions (ie, drag racing) then there is definitely measureable performance to be gained in the torque convertor. K
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Chevrolet Flint Assembly 1979-1986 GM Full Size Truck Engineering 1986 - 2019 Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926 My Pontiac story: http://forums.maxperformanceinc.com/...d.php?t=560524 Chevelle intro: http://www.superchevy.com/features/s...hevy-chevelle/ |
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#8 |
Registered User
Join Date: Jan 2011
Location: Lynn Haven Florida
Posts: 1,019
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Re: How does a torque converter work?
unless your running a really choppy cam you don't need one , my cam called for a 2200 to 2500 stall, it helps when sitting at redlights cam sounds good but my truck is not shaking bad
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#9 |
Registered User
Join Date: Apr 2011
Location: Klein Texas
Posts: 3,852
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Re: How does a torque converter work?
The torque converter's "stall speed" should be tailored to take advantage of the power band of the camshaft.
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My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe |
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