UPDATE: Ticking noice from supercharged / cammed LS3.

[PQ]

Originally Posted by JANNETTYRACING

These Heavy duty valvetrains are noisy, we are working with High lift cams and heavy valve springs.

The side to side clearence is normal (engine Off) but does not move when the engine is running.

Most valvetrain noise can be attributed to too much oil in the crankcase, there have been many discussions about it.

Everyone is so anal about filling the oil to the tippy top line on the stick.

Personally I like them on or just above the lower line on the stick.

7 Quarts with Filter on an oil change.

Ted.

What makes the higher oil level cause the noise?

[SSDan]

Let me throw a log on this fire. Listen to mine running. You can hear the valve train over the top of the exhaust from the rear of the car and the oil level is at the bottom dot like Ted suggests.

I think mine is too loud but others say its normal. I dunno

[PQ]

Originally Posted by SSDan

Let me throw a log on this fire. Listen to mine running. You can hear the valve train over the top of the exhaust from the rear of the car and the oil level is at the bottom dot like Ted suggests.

I think mine is too loud but others say its normal. I dunno

Ya that would drive me nuts.

Lets get it clear though, Ted isn't saying that the noise is no big deal in all cases. Just with this particular set-up. Lifter tick can be a prelude to serious damage.

I'd go ask Ron if it's normal for YOUR build.

[94guy]

Originally Posted by SSDan

Let me throw a log on this fire. Listen to mine running. You can hear the valve train over the top of the exhaust from the rear of the car and the oil level is at the bottom dot like Ted suggests.

I think mine is too loud but others say its normal. I dunno

what valve springs are you running. i do know a very good spring will make less noise.

[SSDan]

Originally Posted by 94guy

what valve springs are you running. i do know a very good spring will make less noise.

Comp - .675 lift

[Oxtar41]

Originally Posted by PQ

What makes the higher oil level cause the noise?

It has to do with the crank spinning through the oil when its up to the full mark. And that causes the airation of the oil. I'm not exactly sure WHY it causes it to make noise as this is the first time I have heard a higher level can cause engine noise.

I would assume that of the oil has bubbles formed in it due to the crank spinning through the oil and they go through parts of the engine that means less oil due to air pockets and can cause excess noise? I'm taking a guess here this is all new to me.

When I used to road race motorcycles I always ran them about 1 quart low, but that was for the increased hp gain due to the crank not having to spin through oil at 15,000 rpm. You can actually pick up a few hp (very minimal) by doing that.

[94guy]

Originally Posted by SSDan

Comp - .675 lift

Yea that's a good spring

[JANNETTYRACING]

Camshaft lobe profile has a lot to do with noise as well, the more aggressive the lobe profile the more likley they will be noisy.

Air in the oil causes noisy lifters.

[A_VAS]

I just setup one with a LPE gt9 cam, and PAC duals. It has a slight amount of noise, nothing worrying me. But rather it be dead quiet like stock. I'll try the oil level change and see.

thanks