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Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

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Old 02-13-2013, 08:15 AM   #1
mopar75110
 
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FAST Intake Manifold Input Please

Anyone using one on a mildly modified engine. I have an LS3 with OBX headers, no cats, axle back exhaust, and Airaid intake. Would one of these manifolds have any noticeable improvement without internal mods?? Thanks for any advice.
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Old 02-13-2013, 08:31 AM   #2
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Neither really without a cam save ur cash and port the ls3 if u put a big cam in it ull see a gain

Ok so I have it on all is well what goes here some kind of square piece and does anyone know what the part number is pic will be attached

I hate posting from a phone it always makes it upside down
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Old 02-13-2013, 10:48 AM   #3
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These have been discussed quite a bit. These are just a few of the hits.

http://www.camaro5.com/forums/showth...ntake+manifold
http://www.camaro5.com/forums/showth...ntake+manifold
http://www.camaro5.com/forums/showth...ntake+manifold
http://www.camaro5.com/forums/showth...ntake+manifold
http://www.camaro5.com/forums/showth...ntake+manifold
http://www.camaro5.com/forums/showth...ntake+manifold
http://www.camaro5.com/forums/showth...ntake+manifold
http://www.camaro5.com/forums/showth...ntake+manifold
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Old 02-13-2013, 11:21 AM   #4
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I feel they are useless on a basically stock car when you consider how much they cost. I do have one on my LS1 vette but that's because the factory manifold is garbage, but your oem ls3 is a very good unit and we have seen great gains with our port job.
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Old 02-13-2013, 01:12 PM   #5
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Agree with all above.

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Old 02-13-2013, 01:41 PM   #6
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axis...you found some I had never read and I searched this a lot. LOL
If I can find one nicely used, I will try it for grins on mine once its pullied down. I think on a centri car the stock TB with a velocity ring into the FAST 102 is the ticket. velocity stays as is and has more intake displacement.
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Old 02-13-2013, 02:11 PM   #7
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axis...you found some I had never read and I searched this a lot. LOL
I'm the official "search the f'n forum" mod.

That means I better know how to use it properly. haha
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Halltech CF 102 fed
GPI modded intake manifold
Bo (knows) White ported TB
Kooks LT's/ Dynomax VT
Pfadted (springs/sways)
Dyno tuned by Rhino and GPI

I once parallel parked a train.
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Old 02-13-2013, 03:34 PM   #8
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axis...you found some I had never read and I searched this a lot. LOL
If I can find one nicely used, I will try it for grins on mine once its pullied down. I think on a centri car the stock TB with a velocity ring into the FAST 102 is the ticket. velocity stays as is and has more intake displacement.
Yes the velocity ring with the VMax ported TB is a great combo.....and we have the velocity rings in stock if needed.

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Old 02-13-2013, 04:02 PM   #9
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I've never really seen a definitive LS3 vs FAST dyno comparo, I'd be curious.

As for the LS1 and LS2 stuff, the FAST manifolds are a clear improvement. Not so sure with LS3 stuff.
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Old 02-13-2013, 04:48 PM   #10
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Quote:
Originally Posted by Pro Stock John View Post
I've never really seen a definitive LS3 vs FAST dyno comparo, I'd be curious.

As for the LS1 and LS2 stuff, the FAST manifolds are a clear improvement. Not so sure with LS3 stuff.
^^ This.....

We've lost some low end tq on some applications using this but if you're FI and hitting 600 and up, might make more sense to invest in one.

Just don't put much more than 15psi to it......

Look at the Holley or custom sheetmetal unit if you go that far. GL!
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Old 02-13-2013, 05:54 PM   #11
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Quote:
Originally Posted by Pro Stock John View Post
I've never really seen a definitive LS3 vs FAST dyno comparo, I'd be curious.

As for the LS1 and LS2 stuff, the FAST manifolds are a clear improvement. Not so sure with LS3 stuff.
Ill take mine off if you wanna test it with speed before the season starts.
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Old 02-13-2013, 05:55 PM   #12
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Quote:
Originally Posted by mopar75110 View Post
Anyone using one on a mildly modified engine. I have an LS3 with OBX headers, no cats, axle back exhaust, and Airaid intake. Would one of these manifolds have any noticeable improvement without internal mods?? Thanks for any advice.
I'd ditch the airaid for a rotofab though.
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