First we flogged the Chevelle's 355 small-block on the K&N chassis dyno. On one pull the car made 270 hp at 5400 rpm at the rear wheels. Immediately afterward, we jumped into the car and tested the On-Board Dyno so that weather conditions and the temperature of the car were as close as possible. With our foot on the floor in Second gear at the same 5400 rpm, the On-Board Dyno showed us the engine was making 268 hp. By the way, the On-Board Dyno can measure torque output when data logging with a computer is used. On the Dynojet, the Chevelle's engine produced an even 400 lbs-ft of torque at 3200 rpm.