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Author Topic:   Torque convertor slippage.
gahainsey
Member
posted January 23, 2003 07:17 AM
I am considering replacing my powerglide with a stick. My question is what percentage of RPM is the stock powerglide convertor slipping at 5500 RPM. The amount of slip will affect final gear selection. Any experience?


racer17j
Member
posted January 23, 2003 01:22 PM
most guys i know run the same gears with a glide as they do with a stock 3 speed


Flatlander
Member
posted January 23, 2003 04:59 PM
If I remember right from tranny classes a converter hooks up about 90%.Newer cars and trucks have clutches in the converter so they can hook up 100% .


Flatlander
Member
posted January 23, 2003 11:19 PM
The 'slippage' actually causes a torque multiplication. It is not necesarily a bad thing. I'd just like to put a number to it so that a revised final drive can be calculated.


powerglides
Member
posted January 24, 2003 07:03 AM
The heat is caused by the fins cutting through the fluid (shear).Thats why its not recomended to run a higher than stock stall converter for a truck that plows snow.I have a Dodge snow comander factory plow pakage the trans cooler is about 2/3 the size of the radiator.


gahainsey
Member
posted January 24, 2003 09:53 AM
Thanks. Maybe I will post an update once the season starts. I may not even change the tranny. I wish I could find an 8 inch convertor that stalls around 1500. A small diameter convertor would have a smaller moment of inertia than an aluminum flywheel and stock clutch!


powerglides
Member
posted January 24, 2003 12:57 PM
"must have operational torque convertor" is the biggest hangup. I don't know if they would catch one with an internal dump valve body or not.


glen73
Member
posted January 25, 2003 08:53 PM
here in oklahoma,a lot of guys have been running Bushore Trannys,they have the internal valve,no extra pedal,just put in high gear and once car gets going drop it low,nobady ever got cought with em,you can get a 10" dummy converter from Coan that will wash some hot fluid in so the converter will be hot like a working one


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