i believe he meant he was getting 390 at the crank not the flywheel. why would he lie about something like this anyways? he has no reason to and has nothing to prove. he may have some mods on it also.

 

I find it hard to believe that they dropped the trans just to test HP at the crank. I suspect that it is an estimate of HP at the crank based on the readings off the the rear wheels.

 

Not to mention that the motor would die in OD on a dyno....
So, Delaware has no taxes, but a surplus of Bravo Sierra.

Hey, you know, maybe he is telling the truth...
My Craftsman 16HP Koehler tractor puts out 87 HP after I replaced the exhaust with a paint can and the intake with a beer funnel!

 

I do know that the thunder road has upgraded exhaust from the factory, i looked at one and it sounded different and the guy said different exhaust from the factory. I wish my truck made 390 to the engine stock.