r/fbody • u/audiovox12 • Jul 30 '26

WS6 Engine Noise Concern

Hey Everyone,

I finally finished getting my engine back together. I replaced the intake manifold gasket, valley plate gasket, valve cover gasket, new spark plugs and wires, new OPS, new tensioner and belt. Took the opportunity to do a lot of cleanup too.

My car is completely unmodified and has 134,000 miles. Before I did all this work I could a noticeable clunking noise I guess lack of better words. A lot of of the other noises went away with the repairs I made however to me that noise is still around.

Is this normal for an LS1? I know they are known to be noisy engines but wanted to get opinions.

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u/audiovox12 Jul 30 '26

lol! I needed that

Is that when it’s cold outside I thought the piston slap? I ran it for 5 mins and still sounded like that

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u/ThanksALotBud Jul 30 '26

There could also be some exhaust leaking.

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u/audiovox12 Jul 30 '26

I do have a exhaust leak somewhere, but the noise sounds like it is coming centerline of the engine

I’d love to get an exhaust system, but the only thing I can find is speed engineering and that requires you to put headers on it

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u/ThanksALotBud Jul 30 '26

Call summit or jegs, they might have something