ls2 vs ls6 intake for boost

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Nov 6, 2013 | 10:13 AM

ls05mustang

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ls2 vs ls6 intake for boost

would a ls2 be better for boost since it has a 90mm t/b?

Nov 6, 2013 | 11:27 AM

stevieturbo

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From: Norn Iron

Heads will dictate whether LS2 or LS6

And a stock 75mm TB will easily handle 1000hp....so in most cases, no 90mm TB isnt any benefit.

Nov 6, 2013 | 11:48 AM

rotary1307cc

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Why would the heads dictate, they are both cathedral

Ls6 is a better intake

Nov 6, 2013 | 11:54 AM

stevieturbo

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From: Norn Iron

Ahh right, I thought some of the last LS2's had square/rectangular ports.

Nov 6, 2013 | 07:42 PM

DEFYANT

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From: Okmulgee, OK

Nope all LS2 Intakes are Cathedral Port. I would also go with the LS6.

Nov 6, 2013 | 08:26 PM

redtan

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From: Belmont, MA

Quote:

Ls6 is a better intake

The LS6 is a better intake compared to a stock LS2 in a naturally aspirated engine.

But in a turbo/procharger setup the downfalls of the LS2 are masked and will probably make more power due to the larger throttle body.

Nov 6, 2013 | 09:40 PM

gixxerbob

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the performance will be so close that price plays a bigger factor in many cases. a ls6 intake is 300-350$ with a real cheap throttle body, while a ls2 manifold can be found for real cheap but a drive by wire throttle body is real pricey. see what you get a better deal on or already have.

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Nov 7, 2013 | 06:52 AM

astross89

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ls1 and spend the money elsewhere.

Nov 7, 2013 | 07:08 AM

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stevieturbo

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From: Norn Iron

LS6 is intake is well proven to show gains over the LS1.

Nov 7, 2013 | 07:57 AM

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dans94z28

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From: crofton md

Well if intercooler piping is 3" pipe and stock 78mm is 3" how is the opening to a huge cavity (the intake) a benefit if majority of the whole system is only 78mm? Ls6 for its better design and flow

Nov 7, 2013 | 08:59 AM

#12

HRHohio

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Quote:

Originally Posted by stevieturbo

LS6 is intake is well proven to show gains over the LS1.

In a turbo setup?

Nov 7, 2013 | 09:04 AM

#13

stevieturbo

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From: Norn Iron

People did tests years ago.

LS6 outperforms LS1 under all circumstances. n/a, boosted, everything

The LS1 must be pretty bad internally.

Nov 7, 2013 | 09:10 AM

#14

HRHohio

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Ahhh, I was always told, "The difference between them comes out to about 1 psi of boost. Not enough to spend the extra money on, just turn it up 1-2 psi."

Interesting. Thanks!

Nov 7, 2013 | 09:14 AM

#15

stevieturbo

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From: Norn Iron

LS6 swap shouldnt really cost very much, so would be hard to say it isnt good value.

Swap to an aftermarket is a different story

Nov 7, 2013 | 09:14 AM

#16

stevieturbo

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From: Norn Iron

LS6 swap shouldnt really cost very much, so would be hard to say it isnt good value.

Swap to an aftermarket is a different story

Nov 7, 2013 | 09:22 AM

#17

LexusFTW

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Are there any guys pushing the LS2 or LS6 intakes to 30 psi of boost?

Nov 7, 2013 | 09:31 AM

#18

stevieturbo

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From: Norn Iron

Quote:

Originally Posted by LexusFTW

Are there any guys pushing the LS2 or LS6 intakes to 30 psi of boost?

I think people pushing LS motors to 30psi is fairly rare, regardless of intake.

Certainly 20-25psi doesnt seem to pose a problem to the LS6. Cant comment on the LS2.

Nov 7, 2013 | 10:27 AM

#19

dans94z28

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From: crofton md

I know of one tuner who is pushing 37 lbs through stock ls6 intake. The ls6 is a more efficen in the upper rpms so naturally it makes more power at less boost. Why would anyone want something less efficent, i dont know. As for the ls2 its a multi piece ibtake and has been known to cack/seperate under boost