340 Engine Shake

Nat said

is it lifters or cam that the problem ? Damn putting the engine in my car next week or so . and it is a Comp cam . So far broken in on the dyno and several pulls all is good . Next week I'll know for sure after a few 100 miles of driving will not be pleased if the cam goes bad . Don't think this is limited to Comp cams , industry wide problem

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I agree. Was just talking to another guy that's in the industry and he believes all the cam manufactures use the same material for their cores, they are just ground differently. I think its a quality of material issue. So I am going to try not to dwell on it, Ive always used comp. My dad just put in a roller for his 383 and so far so good. I am little nervous on the lifters, but then again, what can you do?

You can also google FiTech, Edelbrock Proflo, Holley Sniper and get a ton of hits on bad parts/systems. So I think that is just the way it is now with so much access to information.