New LT1 sound effects

[miketa95]

okay since I've owned my car it always made a tapping sound at idle nothing too bad, but just recently it started making new noises... when I accelerate I get a really bad tapping noise with a combined whirly-type sound, that goes away once i come to a cruising speed. It's really bad around the 1500k-2500k rpm range under acceleration. It's LOUD too, on Saturday when it was warm, I was cruising around with the windows down and it overpowered the exhaust. The strange thing is that it goes away after a couple hard pulls, (I know that can't be a good solution) and the tapping sound at idle now is very very loud too. This is getting frustrating, I can't seem to mod my car because I spend all my money fixing it. Does anyone have any idea whats wrong with it, and what I'm looking at cost wise to fix it? (by a mechanic because I don't have the know-how to do it myself.)

[MonmouthCtyAntz]

Originally Posted by miketa95

okay since I've owned my car it always made a tapping sound at idle nothing too bad, but just recently it started making new noises... when I accelerate I get a really bad tapping noise with a combined whirly-type sound, that goes away once i come to a cruising speed. It's really bad around the 1500k-2500k rpm range under acceleration. It's LOUD too, on Saturday when it was warm, I was cruising around with the windows down and it overpowered the exhaust. The strange thing is that it goes away after a couple hard pulls, (I know that can't be a good solution) and the tapping sound at idle now is very very loud too. This is getting frustrating, I can't seem to mod my car because I spend all my money fixing it. Does anyone have any idea whats wrong with it, and what I'm looking at cost wise to fix it? (by a mechanic because I don't have the know-how to do it myself.)

Sounds similar to my cars problem.. We think its a lifter...were gonna tear into it tommorow. Oil Pressure normal? couldnt give u a labor cost because u dont know what it is...but if the heads need to be pulled it could be costly, especially w/ a Lt1

[WildBillyT]

Yeah, what does your oil pressure look like? How fast is the tapping?

[LTb1ow]

Rod knock at worst. Can you feel if its pulling timing? I know dumb but still...

Check your valvetrain although if its stock and you haven't collapsed a lifter it shouldn't be a problem.

Other than that, look for loose things on the engine. My alternator has since lost its stock mounting and it occasionally works itself loose and rattles like hell.

[MonmouthCtyAntz]

yea it could be something as simple as a part being loose

[miketa95]

timing seems normal, it hasn't lost any power at all. Oil pressure is the same as always, hopefully its just stuff rattling apart, wouldn't be a first for my car.

[MonmouthCtyAntz]

Originally Posted by miketa95

wouldn't be a first for my car.

Or any fbody for that matter, they are know as rattlebox's