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Shall I try modified LS6 intake on the 422ci?

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Old Apr 8, 2002 | 07:24 PM
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Default Shall I try modified LS6 intake on the 422ci?

I was offered an opportunity to try a modified LS6 intake on my 422ci ARE motor.

Frankly, all I can say is that it's a good company and they think I will gain 15rwhp with it. The intake has been internally modified.

I am at 445rwhp / 502rwtq UNLOCKED.

Any thoughts? I would dyno on Speed Inc. dyno again.

This intake might be a cost effect solution that is only a few hundred bux more than a stock LS6 intake.
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Old Apr 8, 2002 | 07:27 PM
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Default Re: Shall I try modified LS6 intake on the 422ci?

Do it! <img border="0" alt="[judgement]" title="" src="graemlins/gr_judge.gif" /> Whats to lose? Do you have to pay for it or do they just want you to test it for them?
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Old Apr 8, 2002 | 07:43 PM
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Default Re: Shall I try modified LS6 intake on the 422ci?

yeah give it a bash,

Should ask Plan B to send over his manifold for a test as well <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" />
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Old Apr 8, 2002 | 08:30 PM
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Default Re: Shall I try modified LS6 intake on the 422ci?

I dunno John a 422ci motor is pretty small to see any intake gains, if you had a 427ci motor it might be worthwhile... .. Of course try it!
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Old Apr 8, 2002 | 08:41 PM
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Default Re: Shall I try modified LS6 intake on the 422ci?

Okay, will get them to send it, after I talk to Speed Inc. about dynoing there.
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Old Apr 10, 2002 | 10:48 AM
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Default Re: Shall I try modified LS6 intake on the 422ci?

What do they do to modify these intakes?

I have always wondered how they can modify cross section of entire runner...
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Old Apr 10, 2002 | 11:29 AM
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Default Re: Shall I try modified LS6 intake on the 422ci?

They are not going tell me what they did inside, just that the bottom was cut off and the internals were reworked. I think that's fair, it's an R&D thing. I'm sure the runners have been reworked.

I have fresh dyno #'s on my car so if we do this intake we'll have #'s to compare.
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Old Apr 10, 2002 | 11:30 AM
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Default Re: Shall I try modified LS6 intake on the 422ci?

Who are you getting the intake from?
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Old Apr 11, 2002 | 11:56 AM
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Default Re: Shall I try modified LS6 intake on the 422ci?

John,is this one of teh local shops???I was at one in the north/west suburbs yesterday and saw a new bad a$$ intake.I'll be back up there either tomorrow or Monday to pick up my new trans.The intake looks awesome,a little pricey but awesome!!!
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Old Apr 11, 2002 | 01:04 PM
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Default Re: Shall I try modified LS6 intake on the 422ci?

Not a shop local to me, and I am not to release their info until we dyno the car.

Hampton I know of the stuff you are talking about.

I am calling the place today to get it sent to me.

I'd like to do a pull as I sit, swap the intake, and then play with tuning to maximize the results.
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Old Apr 11, 2002 | 02:52 PM
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Default Re: Shall I try modified LS6 intake on the 422ci?

You're a strong candidate for a modified Holley intake also.....I'm bench racing, but I think those of you with the big motors can gain something there. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />
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Old Apr 11, 2002 | 03:03 PM
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Default Re: Shall I try modified LS6 intake on the 422ci?

Well, we might test out a few different intakes on my car now.

Once they are all ready, I we would dyno and then post the results...

#1 baseline
#2 new intake
#3 new intake + any needed programming

I think that would be worth a writeup.
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Old Apr 11, 2002 | 04:42 PM
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Default Re: Shall I try modified LS6 intake on the 422ci?

Sounds like a good idea. Why not try the Holley intake while you're at it and maybe the stock LS1? Would really show the differences between them. And do you have any flow information on the stock LS6 vs. modified?
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Old Apr 12, 2002 | 12:56 AM
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Default Re: Shall I try modified LS6 intake on the 422ci?

Someone should make an intake that would allow us to mount a carb on these cars... Something like an edelbrock vic jr or super vic.

THen you'd mod that intake for fuel injection in the case of the large strokers.

There would be no problem with good high rpm HP potential.
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Old Apr 12, 2002 | 11:04 AM
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Default Re: Shall I try modified LS6 intake on the 422ci?

Is the holley an exact recast of LS6 in alum? If so I don't see the great gains to be had, you still have 14" of runner length which is going to dictate the range at which resonance tuning is to occur.

For larger strokers, we probably need shorter runners 10-12" with more cross section and ability to flow over 300CFM. It doesn't even need
to be an array of snakes setup, it can be a "trumpet pipes in a plenum box setup"
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Old Apr 12, 2002 | 11:25 AM
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Default Re: Shall I try modified LS6 intake on the 422ci?

Do it, I have a feeling that your HP is so low because you have a LS1 intake. I have a ARE modified LS6 intake. My first run with my 422 set up for 93 octane netted 472rwhp and the car was freshly bolted together. Mind you, it's a manual but I do think you'll get something from the LS6 intake.

Besides, I doubt you'll have trouble getting rid of the manifold if you don't get anything out of it.

<small>[ April 12, 2002, 11:27 AM: Message edited by: Shaman ]</small>
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Old Apr 12, 2002 | 01:59 PM
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Default Re: Shall I try modified LS6 intake on the 422ci?

PSJ has a stock LS6 intake.

PSJ may also dyno a sheetmetal intake for testing. He is afraid he will want to buy one.

I did 450rwhp unlocked, so I am thinking about 470rwhp locked. I will try all combos.
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Old Apr 13, 2002 | 12:02 AM
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Default Re: Shall I try modified LS6 intake on the 422ci?

I thought PSJ had a LS6 intake and he is going to try a ported LS6 intake?
PSJ can you clarify on this?
Chris
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