Ported rod mod ls3 intake noise
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Joined: Jan 2010
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From: Hurley, VA
Ported rod mod ls3 intake noise I’ve got a ported/rod modded LS3 intake on a 10 Camaro (did a cam/springs at the same time) and now the car has a hollowed out echo vibration type noise coming from the center of the intake). You can’t hear it with the hood down but with it up standing at the fender it is very noticeable. I pulled the intake back off and all seals are good, rods are tight no vacuum leaks. Even paranoid to the point I pulled the timing cover to make sure nothing was out of whack ( had a sticker on the back side of a cam gear hold it out slightly and rub the cam sensor once years ago. I’m about to pull the valve covers to look but I’m convinced it’s something with the intake since the noise is dead center of the manifold. I’ve even pulled vacuum lines off the front and back of the intake to try to make the sound change with no luck so my question is, is this normal?
I’ve got a ported/rod modded LS3 intake on a 10 Camaro (did a cam/springs at the same time) and now the car has a hollowed out echo vibration type noise coming from the center of the intake). You can’t hear it with the hood down but with it up standing at the fender it is very noticeable. I pulled the intake back off and all seals are good, rods are tight no vacuum leaks. Even paranoid to the point I pulled the timing cover to make sure nothing was out of whack ( had a sticker on the back side of a cam gear hold it out slightly and rub the cam sensor once years ago. I’m about to pull the valve covers to look but I’m convinced it’s something with the intake since the noise is dead center of the manifold. I’ve even pulled vacuum lines off the front and back of the intake to try to make the sound change with no luck so my question is, is this normal?
Thread Starter
10 Second Club
Joined: Jan 2010
Posts: 2,317
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From: Hurley, VA
GPI ported rod mod LS3 intake. I sprayed. Pulled the intake to check the seals even pulled the timing cover thinking the sensor could be rubbing the cam sprocket (broke the cam sensor). GPI said it was normal. I know it scared the crap out of me.
Thread Starter
10 Second Club
Joined: Jan 2010
Posts: 2,317
Likes: 20
From: Hurley, VA
That’s the best way to describe it. A resonance in the intake at idle. Almost sounds like an air pump pulsing back into it. With throttle you don’t hear it. I can’t vouch for driving it noises I bolted it on and started working on idle in the tune and never moved it.
