Ever since I got my car the lifters have been loud. The sound is the same on both sides of the engine. The only time I don't notice it is when I get on the gas, and the exhaust starts making noise. I hear it worse when the windows are up. Is there any chance that this is normal. The problem is that I don't know what has been done to the motor, or what it sounded like before I inherited it. I know for a Naturally aspirated 351 C it is quick. I ran the 1/4 mile in 11.488 seconds yesterday with a really bad 2.066 60' the guy next to me in a nova ran 12.125 with 1.7 60'. I can see the silver colored roller rockers through the oil cap hole in the valve cover. I have not taken it off. The heads say SVO on them. Is it possible that because of the high power it has heavy springs, and an aggressive cam, and this is why the valve train is loud, or is a loud valve train always a bad sign? Based on the few members I could find here with both dyno numbers and 1/4 mile times, I think the motor is making north of 500 HP, and I don't think that it is bored or stroked.
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