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How do I calculate tq converter slip?

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danl

20+ Year Contributor
886
274
Apr 8, 2002
Severn, Maryland
I know all the numbers to enter on this page:
Racing Calculators - TCI® Auto

Except the rear end ratio. There is another reduction done inside the trans after the planetary and before the final drive. I think this is what is messing me up. If you put just the final drive in you get some really bad slip number, like 36%. I know the real number is in the mid 4's for "true" "rear end" ratio.

What is this number!!!!!
 
You mean auto drag on the drivetrain vs power? I'm having a hard time comprehending what your saying jack.

The Kiggly mod does have full line pressure right?
 
I could never get a definite answer to this...i've just been comparing rpm/trap speed/tire size between converters to figure out what ball park efficiency should be in. I know the final drive of the trans and rear end ratio but haven't been able to get the right final figure. I hope you figure it out...
 
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