Valve train noise

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Jun 17, 2018 | 07:13 PM

Hammer head

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From: Langley

Valve train noise

Just installed new comp cam, matching push rods, matching beehive valve springs new comp cams trunnions in LS 6 heads.
I now have valve train nose. Is this normal or should I look for a problem component. The Ls 1 has good power and Dynoed at 404 hp to the wheels. Any one have similar problems?

Jun 17, 2018 | 07:35 PM

Che70velle

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From: Dawsonville Ga.

Describe this noise. Is it mechanical sounding? Or maybe a fast paced ticking sound?

Jun 17, 2018 | 08:18 PM

Hammer head

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From: Langley

It sounds mechanical in the rockers as the RPM increases so does the noise. However the motor pulls strong

Jun 17, 2018 | 08:33 PM

Hammer head

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From: Langley

The motor was professionally build so I don’t think there was any mistakes on the builders side.

Jun 18, 2018 | 01:35 AM

kossuth

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Sound like a sewing machine?

Jun 18, 2018 | 08:52 AM

thompson

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Did you check pushrod length when you installed the parts?

Jun 18, 2018 | 10:07 AM

Hammer head

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From: Langley

Yup, The Cam and all the Valve train hard ware was matched including the Push Rods. If there was an issue the Builder would have addressed it with me at the time of assembly. The only other thing that was not replaced was the Roller Lifters.

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Jun 18, 2018 | 07:07 PM

cookseyb

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From: Central Texas

Comp trunnions upgrade bearings probably need to be replaced with the bushing style from CHE or Smith Brothers FWIW...

Jun 18, 2018 | 09:57 PM

qweedqwag

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Push rod length is wrong possibly.

Jun 19, 2018 | 08:01 AM

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codyvette

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From: Brazoria TX

Welcome to world of modified LS engines. You are gonna have valvetrain noise. It can be decreased with different pushrod lengths, better rocker trunions, and perfect valvetrain geometry but it will always sound like a sewing machine. The best way is to crank the stereo.

Jun 19, 2018 | 08:30 AM

#11

qweedqwag

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Quiet

Both of my LS engines are quiet, both have aftermarket cams, one is larger than the other but both valvetrains are quiet, TSP says this is partly due to the new profile of the newer 228r which I a great cam, I guess I'm lucky or did something right. Have fun.

Jun 19, 2018 | 11:50 AM

#12

Phil coppney

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On my third ls build, they all make the same sound to some extent.

verify it is not an issue with your builder and rl into it.

Jun 20, 2018 | 08:07 AM

#13

Hammer head

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From: Langley

Quote:

Originally Posted by Phil coppney

On my third ls build, they all make the same sound to some extent.

verify it is not an issue with your builder and rl into it.

I have used this builder on two other motor builds and he has always let me know when there has been issues. I'm going to change out the lite oil I"m using now and go with a heaver grade. What do you guys think?

Jun 20, 2018 | 08:49 AM

#14

qweedqwag

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Heavy oil wont do much, run 10-30 and drive the **** outta it, it may quiet down with miles put on it.

Jun 20, 2018 | 07:26 PM

#15

Hammer head

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From: Langley

Quote:

Originally Posted by qweedqwag

Heavy oil wont do much, run 10-30 and drive the **** outta it, it may quiet down with miles put on it.

I have already changed the oil out with Lucus oil treatment and Lucus 20-50 Hot Rod oil. Took the car out for a burn around the block and it seemed to be running better but stilI rattling. I have a long distance trip planed for the week end about a 3 hour drive each way, I think that should work in the new parts.

Jun 20, 2018 | 10:42 PM

#16

youguessit

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I would not recommend going over 40wt and use oil with high zinc content.

Jun 21, 2018 | 07:46 AM

#17

Hammer head

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From: Langley

Quote:

Originally Posted by youguessit

I would not recommend going over 40wt and use oil with high zinc content.

Thanks for the heads up.

Jun 21, 2018 | 09:27 AM

#18

thompson

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Quote:

Originally Posted by youguessit

I would not recommend going over 40wt and use oil with high zinc content.

I am intrigued, Why would you not recommend a heavier oil?

Jun 21, 2018 | 09:31 AM

#19

cookseyb

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From: Central Texas

I use Mobil1 10-50 because of the Texas heat, no issues and helps with piston slap in earlier 5.3 etc..

Jun 21, 2018 | 06:55 PM

#20

Hammer head

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From: Langley

Quote:

Originally Posted by thompson

I am intrigued, Why would you not recommend a heavier oil?

I have to agree I am using Lucas 20-50 anyway with the Lucas oil additive. The other stuff is to light for the kind of abuse I will put this LS1 throught. Hopefully all the new parts will be well broken in after the trip and the valve train will be a little quitter.

Last edited by Hammer head; Jun 21, 2018 at 07:00 PM.

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