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What is the best intake manifold for a high hp boosted aplication

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Old 12-31-2013, 01:04 PM
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IMO the power per dollar invested just isn't there with aftermarket intakes and low RPM turbo setups.


We had a local test 3 of the aftermarket LSX manifolds back to back at our track in one night. (NOS327) He did a write up on YellowBullet.

Ported FAST92, an out of the box ProFlo XT, and a lightly ported Victor Jr (EFI) both with and without cast 90deg elbow.

On his NA 6.0 there was less than 1mph difference in the three. I believe the Fast came out on top... barely. Wish he had some OEM intakes to try that night too...

http://www.yellowbullet.com/forum/sh...d.php?t=604281

Last edited by Forcefed86; 12-31-2013 at 02:55 PM.
Old 12-31-2013, 01:16 PM
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I'd kinda like to see if there is some power differences between a stock intake and aftermarket on boost applications. I'm thinking there's not 2 cents worth of difference. Id kinda like to go with the holley hi ram on my nova but after seeing the way stock48 nova runs i'm gonna stick with my free truck intake lol ! For now
Old 12-31-2013, 01:32 PM
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you ask two different questions.

answer to post title - cnc /sheet metal like this



then you ask for a drop in off the shelf intake of which many would fit the bill. For your application any changes would be negligible compared to the bang/buck of just turning up the boost.

Last edited by MIGHTYMOUSE; 01-02-2014 at 10:52 AM.
Old 12-31-2013, 01:32 PM
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I would like to seem some data on a boosted car with a hyd. cam. My money is on the LS6 or truck intake winning the hp per dollar battle.
Old 12-31-2013, 01:48 PM
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Originally Posted by Taubr Unit
However could he have made another 100hp with a better intake is my question.
^ This.
Old 12-31-2013, 02:00 PM
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Originally Posted by 93camaro_zzz
^ This.
or turn up the boost for free.
Old 12-31-2013, 04:03 PM
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we made 1000 with a stock early truck intake & T/B, new engine will have L92 heads and the newer truck intake w/102 T/B see how that works...on paper about 150-200 gain...
Old 12-31-2013, 10:05 PM
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Sheetmetal
Old 01-01-2014, 09:43 AM
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Originally Posted by Forcefed86
IMO the power per dollar invested just isn't there with aftermarket intakes and low RPM turbo setups.


We had a local test 3 of the aftermarket LSX manifolds back to back at our track in one night. (NOS327) He did a write up on YellowBullet.

Ported FAST92, an out of the box ProFlo XT, and a lightly ported Victor Jr (EFI) both with and without cast 90deg elbow.

On his NA 6.0 there was less than 1mph difference in the three. I believe the Fast came out on top... barely. Wish he had some OEM intakes to try that night too...

http://www.yellowbullet.com/forum/sh...d.php?t=604281

you just cant do a 1:1 comparison with intakes....all 3 of those require a different camshaft with different valve events...
so your FAST intake coming out on top, just shows you had the right cam for the FAST..that is all your comparison shows.
Old 01-01-2014, 12:29 PM
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Originally Posted by MIGHTYMOUSE
or turn up the boost for free.
.............or turn up the boost for free with a better intake and get even more gains. Vicious circle here. Its like when people tell me "dont cut more weight out of the car, just take a huge ****", .....or I do both and loose even more weight.
Old 01-01-2014, 12:29 PM
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Originally Posted by soundengineer
you just cant do a 1:1 comparison with intakes....all 3 of those require a different camshaft with different valve events...
so your FAST intake coming out on top, just shows you had the right cam for the FAST..that is all your comparison shows.
Couldnt agree more.
Old 01-02-2014, 11:03 AM
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Originally Posted by Taubr Unit
.............or turn up the boost for free with a better intake and get even more gains. Vicious circle here. Its like when people tell me "dont cut more weight out of the car, just take a huge ****", .....or I do both and loose even more weight.
then turn up the boost TWICE and spend that grand on something more important like octane, head bolts, or tires for real, tangible gains.

with those cubes, being able to turn up the boost may actually run the turbo up into the island and make it happier
Old 01-03-2014, 03:04 AM
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How about a ported L76 intake on ported L92 heads.......?

How would that do against a ported LS6 intake on ported comparable heads....?
.
Old 01-03-2014, 09:15 AM
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Due to potential size restraints I would port what you have invest the money elsewhere.
Old 01-03-2014, 02:31 PM
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Originally Posted by LS1NOVA
Sheetmetal
X2 best of everything for every driving condition.
Old 01-03-2014, 03:24 PM
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Originally Posted by soundengineer
you just cant do a 1:1 comparison with intakes....all 3 of those require a different camshaft with different valve events...
so your FAST intake coming out on top, just shows you had the right cam for the FAST..that is all your comparison shows.
We aren’t talking about all out race motors reving to the moon. IMO The comparison shows that on a moderate build, aftermarket intakes aren't going to make a huge difference in power. Not worth the 1000+ they cost. When you can pretzel the rods on an OEM intake.

Take a stock LQ4 with a 6500 rev limit. Then pick whatever cam you think is matched to a FAST intake. Then run the other two intakes. I don’t believe there is going to be a massive power difference between any of them
Old 01-03-2014, 04:48 PM
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Originally Posted by Forcefed86
We aren’t talking about all out race motors reving to the moon. IMO The comparison shows that on a moderate build, aftermarket intakes aren't going to make a huge difference in power. Not worth the 1000+ they cost. When you can pretzel the rods on an OEM intake.

Take a stock LQ4 with a 6500 rev limit. Then pick whatever cam you think is matched to a FAST intake. Then run the other two intakes. I don’t believe there is going to be a massive power difference between any of them
I agree. I've run carb style intakes with elbows and stock ls1 intakes and a lot of truck intakes to me doesn't make a bit of difference on jy motors maybe on high rpm race motors. Stock intakes for the win
Old 01-03-2014, 04:58 PM
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Maybe we should ask the OP for him to define high hp applications.

Cause from the evidence that has been presented unless you are north of 1000 a stock intake is just fine in a boosted application. Just because it costs big $$$ and it does not look stock does not mean you NEED it. I am happy to support vendors but if I can do it my self, learn while doing so, and save bux for needed parts that is my process.
Old 01-03-2014, 05:02 PM
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I quote sound engineer in post #4 with reference to a 98 computer being sufficient and I think that philosophy applies here too.

https://ls1tech.com/forums/pcm-diagn...-too-slow.html


Lots of times, stock parts are just fine in lots of applications.

Last edited by aknovaman; 01-03-2014 at 05:17 PM.
Old 01-04-2014, 11:16 AM
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interesting topic guys........keep the info and opinions coming..


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