Lets talk drivetrain loss...

Transmission to Rear-end

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Casper393W
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Lets talk drivetrain loss...

Post by Casper393W » Sun Aug 21, 2016 10:29 pm

Please share what kind of %'s you are seeing with your built auto and conventional non lockup hi stall converters 3500+

Andy

Greenlight
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Re: Lets talk drivetrain loss...

Post by Greenlight » Mon Aug 22, 2016 6:37 pm

Here is a link with actual data that may help you.

http://www.hotrod.com/articles/ccrp-031 ... ower-loss/
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joe 90
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Re: Lets talk drivetrain loss...

Post by joe 90 » Mon Aug 22, 2016 7:35 pm

It's not a % either.


It's closer to being a fixed number with a very small % added to it.
Most of the fixed part of it is directly proportional to both road speed and tyre pressure.


You should never take too much notice of car magazines either.
They're usually written by kids.


You can't dyno an auto transmission properly anyway due to the slippage.
Most dynos take the engine RPM from the rollers knowing the gear ratio. When the TC is slipping it multiplies torque and also increases engine RPM with respect to roller RPM.
= GIGO.

Casper393W
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Re: Lets talk drivetrain loss...

Post by Casper393W » Tue Aug 23, 2016 10:42 am

I have dyno back to back tests... Back in 2009 I built a 96 Mustang GT 4.6 2v engine, It was a healthy build with the Stock T45 transmission it made 425rwhp and 360rwtq... I installed a built C4 Trans with a 4500 stall converter...with no changes to the engine the power dropped to 318rwhp....

I will try to find the dyno sheets to post...

Andy

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