Took my '79 Bronco today and put it on a Mustang Dynojet (brake horsepower) she came out with 185 HP and 270 lb/ft of TQ, now with a supposid 35% power loss through the powertrain, that comes out to 250 hp and 365 lb/ft of TQ at the flywheel, sound about right?

some pics here of the Bronc and the 6 other vehicles that ran today

http://voyager.angelheadedhipsters.com/ftw

 

i thought brake horsepower was the flywheel horsepower.

 

there are 2 types of dynos there is the drum type (inertia) and there is the brake (brake HP) the inertia spins a large drum to average out the power, it doesn't give real world results, and then the brake keeps a constant load on the drivetrain by a magnetic force and calculates hp by engine speed and wheel speed and it doesn't matter on gearing and such

 

BHP as it is known, is Hp measured at the flywheel. All of the dealers use those types of figures. For instance, the new 5.4 has 300bhp. That is NOT at the rear wheels. Rear wheel horsepower is truly measured on a chassis dyno, but those numbers are not totally 100% accurate, because of the fact of no ram air effect into the motor. By that I mean air forced into the engine compartment by cruising down the road. You would gain some hp in outside conditions.

 

here is the Dyno Graph

 

by looking at the videos, the PSD's seemed to own that dyno session.

 

yeah, the PSD's did, for sure, but I came out tops on the Torque end, a 5.4 was 7 HP points ahead of me, but it gives everyone an Idea of what these EFI 460's put out, there was not much changed when the engine was put in, it was all stock execpt for the placment of the airbox and the dual exhausts, the 460's are a little restricted, that is what the dyno operator told me, and if you look at the graph, you can see that as well, where the HP goes up, and then it levels off, that is where the engine starts to get restrictive