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Old Jun 2, 2011 | 05:34 PM
  #21  
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you can get a ported ls1 TB for $60.you can get a used BBK or weiand for $300,not much more power then a ls6 intake.
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Old Jun 2, 2011 | 08:16 PM
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If you want max power, the FAST intake is the best choice.
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Old Jun 2, 2011 | 10:02 PM
  #23  
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LS6 intake is a good start but if you plan on doing more modding in the future I would buy the FAST now
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Old Jun 2, 2011 | 10:20 PM
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So much uneducated posts and assumptions.

My opinion.. Go ls6 and spend the left over elsewhere.
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Old Jun 3, 2011 | 03:21 PM
  #25  
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Originally Posted by lemons12
So much uneducated posts and assumptions.

My opinion.. Go ls6 and spend the left over elsewhere.
Point them out and makes corrections
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Old Jun 3, 2011 | 03:35 PM
  #26  
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Originally Posted by Detoxx03
Point them out and makes corrections
I'm going to, just not while on my phone.

I remember what threads I need to go back in when I get to the comp.
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Old Jun 3, 2011 | 04:38 PM
  #27  
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Originally Posted by BrntWS6
no point in going with a FAST setup unless you have good premium heads.
I don't think you were point towards this... But just to clarify, the FAST will most definitely make power even with stock heads. If someone was wanting to stay S.I., it would be a very nice investment.
Originally Posted by ramairetransam
does porting the ls6 help at all>?
Little to none, no point in wasting the money.
Originally Posted by BrntWS6
At least 18hp is a decent number. I'd like to know if that was a back to back dyno though, or at least if it was done on the same one. I've read too many threads where people gain nothing or even lose hp after spending a grand on these things.
Same dyno.
Could you please point out where anyone didn't gain anything or lost Rwhp. I have seen ZERO people claim this.
This is granted they are on the same dyno/same tuner/no other modifications that would effect the results.
Originally Posted by Starz T/A 17
Maybe that was an 18 HP gain over a LS1, where a LS6 is like 12-15 with a tune. And I agree with you, there really is not a huge gain with FAST unless you have a high HP setup. There is only so much you can gain on a stock like car
No, it was over an ls6.
What do you consider high HP? there are people with SI ls1s that are seeing nice gains... People with small cam only setups and people with AFR/Ms3 setups that are seeing nice results.
There is but someone looking for everything will benefit from a FAST.
Originally Posted by JohnJanz@Texas-Speed
IMO the FAST intakes should be purchased at the same time or after you get a set of heads. Heads are better bang for your buck by a long shot. The FAST is good but 30-40rwhp>15rwhp.
This.

Unless you are trying to stay SI, follow this.
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Old Jun 3, 2011 | 04:52 PM
  #28  
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I say the ls6 is the way to go, the fast does look nice tho
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Old Jun 3, 2011 | 05:05 PM
  #29  
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I like the fast but its ugly. Everytime I see a new one that saying about a fool and his money comes to mind
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Old Jun 3, 2011 | 05:33 PM
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Originally Posted by lemons12
No, it was over an ls6.
What do you consider high HP? there are people with SI ls1s that are seeing nice gains... People with small cam only setups and people with AFR/Ms3 setups that are seeing nice results.
There is but someone looking for everything will benefit from a FAST.
I just don't see an 18 HP gain from a LS6 to a FAST with everything else being equal.
https://ls1tech.com/forums/14894923-post216.html
If thats the post your referring to "proving" the 18 HP gains, that post is very manipulative. To begin with its not JUST switching over intakes. There is a larger lid, larger TB & ported TB, and most importantly a tune.

I would expect if you took that exact same car, and added a P&P TB and a tune with the original setup you would probable pick up at the minimum 10-15 HP and I would expect if you baseline the FAST intake that it would not be 340 if you did it before the tune.
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Old Jun 3, 2011 | 07:30 PM
  #31  
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He had a tune before iirc. why would you go to a fast and keep stock lid and maf sizes?
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Old Jun 3, 2011 | 09:18 PM
  #32  
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Originally Posted by lemons12
He had a tune before iirc. why would you go to a fast and keep stock lid and maf sizes?
I don't think anybody is saying you shouldn't/wouldn't. It's just kind of a misleading statement for them to say +18 on the fast when in reality it was fast/tb/lid. It wasn't just the fast.
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Old Jun 3, 2011 | 09:32 PM
  #33  
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Touche... I guess it can be looked at both ways.

I would do JUST a fast.. Just like I would do JUST a cam.

Either way, there is a gain to be had over an ls6. Worth the money to someone or not is up to the individual. As well as making power on stock heads and cam setups, not losing.
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Old Jun 3, 2011 | 09:59 PM
  #34  
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So the bottom line is that they will both make more power but the FAST will really shine with a h/c upgrade. I would go ls6 and use the extra money towards something else, which is what I'm doing. Later when you do h/c you can sell the ls6 set up.
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Old Jun 3, 2011 | 10:19 PM
  #35  
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I would personally save up once and do it right and get a FAST, but i would also run 1 7/8s headers on a stock LS1
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Old Jun 3, 2011 | 10:35 PM
  #36  
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1 7/8 headers...............yes please
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Old Jun 3, 2011 | 10:44 PM
  #37  
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I don't see why everyone downs the LS6 intake. For what they can be had for, they are a nice piece that can make power to 6500rpm. If you plan on revving past that then that's where the FAST really shines. With boost I know intakes really aren't that big of a deal unless again you are revving past 6500-6700 rpm where the LS6 intake will fall off no matter how much porting it has. Still I like the LS6 intake as a effective mod if your car already didn't come with one factory. If it came with one factory then an upgrade could be justified IMO, but like other's in the thread 1400 bucks for the TB and intake isn't worth the 15hp I'd gain with the cam I have now.
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Old Jun 4, 2011 | 01:21 AM
  #38  
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Originally Posted by Fbodyjunkie06
I don't see why everyone downs the LS6 intake. For what they can be had for, they are a nice piece that can make power to 6500rpm. If you plan on revving past that then that's where the FAST really shines. With boost I know intakes really aren't that big of a deal unless again you are revving past 6500-6700 rpm where the LS6 intake will fall off no matter how much porting it has. Still I like the LS6 intake as a effective mod if your car already didn't come with one factory. If it came with one factory then an upgrade could be justified IMO, but like other's in the thread 1400 bucks for the TB and intake isn't worth the 15hp I'd gain with the cam I have now.
Its because its the internet, same reason why people say not to buy 98' F bodies and why SS and WS6 models are better then Z/28 and Trans Ams

But the truth is that the FAST intake is Superior design to the LS6 and the more and more you mod the car the bigger the gap in gains between the FAST and LS6 get, but on a basic stock car I don't see a couple HP being worth 3 times the cost, the money can be better spent elsewhere. Both intakes are good, and the Best one depends on your setup and overall goals with the car.
Its like the example showing 18 HP gains, 5-8 of that probable came from the TB and the rest probable had a lot to do with the tune. But people see the 18 HP gain and think they will instantly gain 18 HP over a LS6 which is not the case. Im sure if you took a completely stock LS1 (non LS6 intake model) and bolted a LS6 intake to it and then took it off and put a FAST intake they would be within 5 HP of each other.
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Old Jun 4, 2011 | 09:59 AM
  #39  
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Most of those gains are not from the tb. The tb is usually not a restriction in most setups.
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Old Jun 4, 2011 | 11:01 AM
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Originally Posted by lemons12
Most of those gains are not from the tb. The tb is usually not a restriction in most setups.
Only in a boosted set-up would the TB be a restriction, or on a 400+C.I. motor. What is the stock LS6 TB...78mm? 80? I was thinking about getting my TB ported. What is the biggest TB you fit on a LS6 intake without a lot of extensive mods? I think I've seen 85mm on them without mods correct?
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