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Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

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Old 09-30-2010, 09:05 PM   #1
GrinderSS
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Valve train noise

Does anyone else with upgraded cams notice that there's quite a bit of valve train noise in the LS3? I had dual valve springs, new push rods, and new roller trunions installed with my cam. Since then it seems the valve train noise is more noticeable.

Can the cam ramp rate and stronger valve springs cause this noise? If it's normal that's fine, I just want to make sure something isn't about to come apart.
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Old 09-30-2010, 09:40 PM   #2
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Mine does the samething....

Wanting to see what others say.....
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Old 09-30-2010, 10:01 PM   #3
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I do think the dual springs are more noisier. Someone else might know this for sure.
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Old 09-30-2010, 10:16 PM   #4
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the spring rates are much higher, to go with the higher lifts they have to be louder.. period.
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Old 10-01-2010, 07:45 AM   #5
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I think it is normal .. I think with longtubes you will hear a bit more valvetrain noise as well..

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Old 10-01-2010, 08:12 AM   #6
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Quote:
Originally Posted by GrinderSS View Post
Does anyone else with upgraded cams notice that there's quite a bit of valve train noise in the LS3? I had dual valve springs, new push rods, and new roller trunions installed with my cam. Since then it seems the valve train noise is more noticeable.

Can the cam ramp rate and stronger valve springs cause this noise? If it's normal that's fine, I just want to make sure something isn't about to come apart.
I recommend stepping up to 10/30 Mobil 1 instead of 5/30 also make sure you don't overfill this foams the oil increasing valve train noise.

Pretty much normal otherwise.

Ted.
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Old 10-02-2010, 12:17 AM   #7
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Thanks guys. Ted, how will 10w30 oil help? At operating temperature its supposed to be the same viscosity as 5w30.
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Old 10-02-2010, 01:17 AM   #8
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Thanks guys. Ted, how will 10w30 oil help? At operating temperature its supposed to be the same viscosity as 5w30.
Thicker viscosity at startup (lower temps) will help protect and reduce premature wear.

They'll always be a little noisier though.

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Old 10-02-2010, 07:23 AM   #9
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Full roller rockers like the Yella Terras or Comps 1521's can reduce valve train noise from aggressive cams and springs.

Grinder, nice cam I'm running a 224/236 0.610/0.608, but 114 LSA.
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Old 10-02-2010, 08:42 AM   #10
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Thanks guys. Ted, how will 10w30 oil help? At operating temperature its supposed to be the same viscosity as 5w30.
Oils have a Much wider temp range than is seen in most cases, Normal operating temp is in the middle of the temp extremes so 10/30 is heavier at Normal operating temps.

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