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Here at PSI we have a wide variety of cars on the dyno. On the same day, there could be an modern import car followed by a classic American car. One day, we had this 1967 Chevrolet Camaro.
The dyno is used to not only give you performance numbers like horsepower and torque, but also lets you know how your engine is running. While on the dyno, we monitor the air/fuel ratio and also boost pressure when applicable. Maintaining the proper air/fuel ratio throughout is important to not only make power but to keep the engine safe.
This '67 Camaro is powered by a 383 Stroker TPI engine with a mild cam.
The Camaro was strapped down to the dyno and ready for a few runs. During the first run, the air/fuel ratio was very poor. A full run was not made because the ratio was too lean. Not only did the Camaro produce very low numbers but running with such a high air/fuel ratio was dangerous for the engine.
It was apparent that this Camaro needed a tune. A tuning solution was found that included the use of a Tuner Pro RT. Jason Oefelein tuned the Camaro for a safer air/fuel ratio throughout the power band. After the tune, the Camaro produces 278 whp and 333 ft-lbs of torque.
Here is a video of the run:
1967 Chevy Camaro on the dyno at PSI from Portland Speed Industries on Vimeo.
