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The Terminator
Driveline
Crank vs Wheel HP numbers
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<blockquote data-quote="CobraBob" data-source="post: 17021325" data-attributes="member: 6727"><p>[USER=204917]@Davisenvy[/USER], as you can see from the comments above, the drivetrain loss varies, depending on the vehicle, transmission, etc. No harm in you using an approximate number like 15%, 17%, etc., but it will only be an approximation and you're, I know, good with that. Putting it on a dyno would be good if you're really wanting to see real world numbers to the wheels, but even then, dynos vary. Here's a clip from my <a href="https://www.svtperformance.com/pages/Terminator-FAQs/" target="_blank"><strong>Terminator FAQs</strong></a>. "<em>All dynos differ slightly in reported output, due to differences in software revisions and calibration. For this reason it is recommended that you stick to one dyno shop when measuring performance differences between various motor mods installed. In general, Dynojet dyno numbers are a bit higher (typically 6-13%) than Mustang Dynos. And even Mustang Dynos can vary high and low due to operator setup.</em>"</p><p></p><p>FYI, if you were to use a dyno and have future engine mod plans, it is best to stick with the <u>same</u> dyno when you're wanting to accurately check the performance gains from those mods. For you, sounds like you simply wanted to know if the simple answer was to use an approximate drivetrain loss percentage applied to the advertised factory horsepower. Everything else we have all shared with you is just "gravy". <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite22" alt="(y)" title="Thumbs up (y)" loading="lazy" data-shortname="(y)" /></p></blockquote><p></p>
[QUOTE="CobraBob, post: 17021325, member: 6727"] [USER=204917]@Davisenvy[/USER], as you can see from the comments above, the drivetrain loss varies, depending on the vehicle, transmission, etc. No harm in you using an approximate number like 15%, 17%, etc., but it will only be an approximation and you're, I know, good with that. Putting it on a dyno would be good if you're really wanting to see real world numbers to the wheels, but even then, dynos vary. Here's a clip from my [URL='https://www.svtperformance.com/pages/Terminator-FAQs/'][B]Terminator FAQs[/B][/URL]. "[I]All dynos differ slightly in reported output, due to differences in software revisions and calibration. For this reason it is recommended that you stick to one dyno shop when measuring performance differences between various motor mods installed. In general, Dynojet dyno numbers are a bit higher (typically 6-13%) than Mustang Dynos. And even Mustang Dynos can vary high and low due to operator setup.[/I]" FYI, if you were to use a dyno and have future engine mod plans, it is best to stick with the [U]same[/U] dyno when you're wanting to accurately check the performance gains from those mods. For you, sounds like you simply wanted to know if the simple answer was to use an approximate drivetrain loss percentage applied to the advertised factory horsepower. Everything else we have all shared with you is just "gravy". (y) [/QUOTE]
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