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Horsepower lost at the wheel

Ctriton20

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Hey Guys! I want to know. How much engine horsepower is lost at the wheel on a big block mopar with a 727 trans and 3.91 gears?
 

Steve340

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I understand the drive train of an automatic car can loose estimated 25% from the crankshaft figure.
 

Chryco Psycho

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Easily 25-30 %
Also dynos read very differently so it is best to test on 1 dyno for comparison & tuning , Dynojet is very optomistic for example , Mustang is a reality check reading 15% lower than a Dynojet
 

moparleo

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Anything is a guess. So many variables. Is the engine stock ? What type of fluids do you use ? Is the transmission, torque convertor stock, Is the engine tuned properly ?At what rpm ?and on.....
 

Ctriton20

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Anything is a guess. So many variables. Is the engine stock ? What type of fluids do you use ? Is the transmission, torque convertor stock, Is the engine tuned properly ?At what rpm ?and on.....
I posted my engine dyno sheet in our forum. It made 665hp at 5800 and 691tq at 4500. Put the car on the dyno with full trim and it only made 480hp at 5800. That's a massive lost guys! 400/512 stroker with trickflow 240 heads 10.5cr.
 
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