Cam help

j par said
I was at a car show, and this guy was letting this car idle and it was idling smooth, and then he reached inside and said, I have a cam that I can switch profiles with a switch and he flicked the switch and all of a sudden the car it sounded like it had a big monstrous cam in it. And then he lifted the hood, and he had a little electric motor and he had a little string that was jerking the throttle and blipping the throttle and going blip... Blip....blip....dlip...
If I would have walked up and that little motor would have been on... I wouldn't have known....
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When I worked at the local Chevy dealer, we were all at the Atlanta training facility.....this was about 1989 I guess. They had a small block on a run stand that had tall valve covers with all kinda wires running through them. It was a camshaftless engine. It used solenoids to actuate the valves. They fired it off and it was just a stock sounding 5.7. Then he changed the program mid run and it sounded like a drag car. They could put any program in it they wanted. I've always wondered what happened to that project.