ok so I have a 63 Chevy c10 I put a 350 in it with mild work, the reason I need help is that I was driving my truck and all of a sudden it just lost 80% of its power. It took quite a while to rev up and sounds like a totally different engine. it doesn't sound good it sounds sluggish, or starving for gas or something I don't know. I look at my carb and the air cleaner is one from advance the edelbrock triangle looking ine.it has a foam material for air cleaner. well it was melted. no I took the carb off and cleaned it very well in a parts washer. (don't know if that's good or bad) and put it back on and still doing it if you have any advice id appreciate it. this smarter guy I know says it could be something in the ignition..