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Take off Air cleaner assembly and in Park press gas pedal down hard and listen for loud popping sounds.If it is popping remove valve covers.Watch and see if all the rocker arms move up and down evenly.If not chances are cam and lifters are bad.

what kind of problems are you having to make you think it's a cam lobe? usally if a lobe is worn off it will back fire through the carb depending on how bad it is, if the cam is bad then it usally means you've spun a cam bearing in it because of no opil getting to that lobe it has worn off, but it also can be a bad lifter is bad but usally the tick alot before going out. call me if you want and tell me why you think it is, 636-575-0255, thanks harry

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Q: How do can you tell if the cam is bad on a 79 Chevy Suburban with a 350 engine?
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