Trimming sound deadner under LT1 intake for LT2

The Blackheart · 12-26-2021, 10:29 AM

Merry Christmas All! Or at least Happy Holidays!

I was pretty sure that someone posted photos of the section of the sound deader that you needed to trip in order to install the LT2 intake.

Does anyone have those? Link or maybe Youtube?

Thanks!

Trochoidal · 12-26-2021, 10:44 AM

This might be what you saw. 18:50 he talks about the foam.

https://m.youtube.com/watch?v=_DQdZ9rfQ68

6spdhyperblue · 12-26-2021, 06:57 PM

Trim the areas of foam above the hpfp but leave enough that it still swings around d back on the firewall side

BruceWayne1LE · 12-26-2021, 10:05 PM

Throw that foam crap in the trash can. Problem solved.

Spaceme1117 · 12-27-2021, 05:38 AM

Quote:

Originally Posted by BruceWayne1LE

Throw that foam crap in the trash can. Problem solved.

Nah. It is a good idea to try to re-use the foam. It will quiet down the fuel pump and injector noise and help with keeping heat from the engine out of the intake manifold.

BlackbeastSS2 · 12-27-2021, 06:47 AM

Quote:

Originally Posted by Spaceme1117

Nah. It is a good idea to try to re-use the foam. It will quiet down the fuel pump and injector noise and help with keeping heat from the engine out of the intake manifold.

On the other side of the coin, without the foam it will allow a certain amount of air flow to flow under your manifold intake and perhaps help lower temperatures?

The foam helps make it quieter that’s for sure. I did the LT2 intake swap and just decided not to put it back even with it trimmed out to fit. Either or works in IMO.

Nitefall17 · 12-27-2021, 08:24 AM

Leave the foam out, but get new intake bolts.
They have a new version with 8mm heads and blue loctite.

6spdhyperblue · 01-02-2022, 07:25 AM

I’m in the camp of hearing the fuel pump and injectors without the foam. I didn’t hear it when I had a loud exhaust but did once I quieted it down. I put the foam in and I don’t hear it again.

OB0001 · 01-02-2022, 09:51 AM

Quote:

Originally Posted by Nitefall17

Leave the foam out, but get new intake bolts.
They have a new version with 8mm heads and blue loctite.

link to new bolts?

Spaceme1117 · 01-02-2022, 10:17 AM

Quote:

Originally Posted by 6spdhyperblue

I’m in the camp of hearing the fuel pump and injectors without the foam. I didn’t hear it when I had a loud exhaust but did once I quieted it down. I put the foam in and I don’t hear it again.

It’s funny that some people want to hear the fuel pump and injector noise.

When the Saturn Sky Redline and Pontiac Solstise GXP came out, people complained about lifter tick. It was the HPFP. GM put out a TSB to fit a high density foam insulator to quiet down the ticking.

6spdhyperblue · 01-02-2022, 11:39 AM

Yeah I don’t like the ticking sound

Nitefall17 · 01-03-2022, 08:59 AM

Quote:

Originally Posted by OB0001

link to new bolts?

I cant remember the number, I ordered them from my local dealership.
He order the current part number in there system.

BruceWayne1LE · 01-04-2022, 12:49 AM

Yea I threw mine in the storage unit. Heat shielded the bottom of my manifold and called it a day. I have headers to MBRP so I can’t hear crap. I can’t even hear this post…

12-26-2021, 10:29 AM	#1
The Blackheart Drives: 2019 SS/1LE Riverside Blue, Z/28s Join Date: Aug 2019 Location: Denver Posts: 97	Trimming sound deadner under LT1 intake for LT2 Merry Christmas All! Or at least Happy Holidays! I was pretty sure that someone posted photos of the section of the sound deader that you needed to trip in order to install the LT2 intake. Does anyone have those? Link or maybe Youtube? Thanks!

12-26-2021, 10:44 AM	#2
Trochoidal Drives: 2017 Camaro 2SS A8 Join Date: May 2019 Location: USA Posts: 1,656	This might be what you saw. 18:50 he talks about the foam. https://m.youtube.com/watch?v=_DQdZ9rfQ68 __________________ Roto-Fab w/sound tube delete, Katech ported TB, Pray IM, Velossa, DD side markers, DSX FF, UPR Catch can, Halo brace, My custom vent gauge pod Originally Posted by arpad_m - “Aww, yet another oil thread with almost the same question in the OP“

12-26-2021, 06:57 PM	#3
6spdhyperblue Drives: 6th gen Join Date: Aug 2013 Location: US Posts: 3,677	Trim the areas of foam above the hpfp but leave enough that it still swings around d back on the firewall side Last edited by 6spdhyperblue; 01-02-2022 at 07:26 AM.

12-26-2021, 10:05 PM	#4
BruceWayne1LE Drives: 2018 Camaro SS 1LE M6 Join Date: Oct 2018 Location: Northern California Posts: 345	Throw that foam crap in the trash can. Problem solved. __________________ Camaro 2SS 1LE, MBRP Catback, Mishimoto Catch Can, Rotofab dry, TSP1 7/8” headers,DSX FF, Pray ported MSD, 95mm TB 492WHP 473WTQ

01-04-2022, 12:49 AM	#13
BruceWayne1LE Drives: 2018 Camaro SS 1LE M6 Join Date: Oct 2018 Location: Northern California Posts: 345	Yea I threw mine in the storage unit. Heat shielded the bottom of my manifold and called it a day. I have headers to MBRP so I can’t hear crap. I can’t even hear this post… __________________ Camaro 2SS 1LE, MBRP Catback, Mishimoto Catch Can, Rotofab dry, TSP1 7/8” headers,DSX FF, Pray ported MSD, 95mm TB 492WHP 473WTQ

12-27-2021, 08:24 AM	#7
Nitefall17 Drives: Camaro 1SS A8 Vert Join Date: Sep 2018 Location: Tx Posts: 303	Leave the foam out, but get new intake bolts. They have a new version with 8mm heads and blue loctite.

01-02-2022, 07:25 AM	#8
6spdhyperblue Drives: 6th gen Join Date: Aug 2013 Location: US Posts: 3,677	I’m in the camp of hearing the fuel pump and injectors without the foam. I didn’t hear it when I had a loud exhaust but did once I quieted it down. I put the foam in and I don’t hear it again.

01-02-2022, 11:39 AM	#11
6spdhyperblue Drives: 6th gen Join Date: Aug 2013 Location: US Posts: 3,677	Yeah I don’t like the ticking sound

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