GEN 2 COBB vs Hennessey, why does Hennessey show larger HP gains?

[Gsteve]

Stock trucks dyno at around 365 whp, an 85 hp drivetrain loss. For that truck to be making 600 crank it would have to losing 167 to the wheels, nearly double stock.

Reality is that's a 525-530 crank horsepower truck, just like everyone else is making on pump gas.

And there you have it

 

[Wojciech Gierczynski]

600HP crank it would translate to aprox. 480WHP thats what my 2017 Roush Supercharged did with Stage 1. After I went with Stage 2 650HP it did 510WHP. His truck at 435WHP is no where near 600HP crank. Its more of aprox. 540hp crank truck

 

[Wojciech Gierczynski]

View attachment 145316

435WHP from this Dyno Sheet is aprox. 540HP Crank. There is no way in hell this truck lost 30% of power ... tgey loose anywhere between 18-20% at the most. Like I mentioned above my previous truck 2017 Roush F150 Supercharged with 600HP stage 1 had 480WHP at the dyno.

 

[isis]

The only way to tell for sure is go take the engine out and have it measured if it matters.

or hit a f’in drag strip. Trap speeds don’t lie.

 

[Guy]

It’s a mild tune.

 

[Wojciech Gierczynski]

The only way to tell for sure is go take the engine out and have it measured if it matters.

or hit a f’in drag strip. Trap speeds don’t lie.

There is nothing to tell for sure. According to Dyno sheet he provided it did 435WHP which is 530-540HP crank.

 

[Xtinct]

Another negative tick for Hennessey. Thank u for answering my question though.

 

[Wojciech Gierczynski]

Another negative tick for Hennessey. Thank u for answering my question though.

Someone stated that they did put bigger turbos before ... thats why maybe they had numbers of 600HP and 620lbs of torque ... but with 435WHP thats nowhere close to 600HP crank

 

[Roc Nichols]

It is what it is boys. As soon as I figure out how to up load I will show it to you guys. They say going to better tires will help improve the WHP too. Stock Tire are pretty bulky

 

[WC114]

Thanks for posting the Dyno. I Wondered how power the Hennessy really made