HP Gains from a ported LS2 intake ?
Thread Starter
Race Director
Joined: Apr 2007
Posts: 14,062
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From: Henderson Nv-Rohnert Park/Sonoma C o. ca/born in NY Rockaway Beach.
HP Gains from a ported LS2 intake ?
Like the title says.. What kind of gains do you think I would see on a ported LS2 intake... Only mods are Halltech CAI, Vmax ported TB, and a tune..
Thanks all...
Thanks all...
Tech Contributor
Joined: Jul 2002
Posts: 14,950
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From: St. Louis, MO
St. Jude Donor '08
Likely zero. Your intake is not a restriction on your set up.
Your manifolds are your restriction now, you need headers as a next mod.
You might find some info of interest in my bang for the buck thread with all my mods overlaid on one dyno sheet so you can see what matters most.
http://forums.corvetteforum.com/c6-t...ast-heads.html
Your manifolds are your restriction now, you need headers as a next mod.
You might find some info of interest in my bang for the buck thread with all my mods overlaid on one dyno sheet so you can see what matters most.
http://forums.corvetteforum.com/c6-t...ast-heads.html
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 265
From: St. Louis, MO
St. Jude Donor '08
Wouldn't bother with a ported intake then.
Z06 manifolds are a good mod for you. You will get good gains from them. Check Hoxxoh posts or pm him as he had them when he set the ls2 bolt on record a while back.
Z06 manifolds are a good mod for you. You will get good gains from them. Check Hoxxoh posts or pm him as he had them when he set the ls2 bolt on record a while back.
Thread Starter
Race Director
Joined: Apr 2007
Posts: 14,062
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From: Henderson Nv-Rohnert Park/Sonoma C o. ca/born in NY Rockaway Beach.
Thread Starter
Race Director
Joined: Apr 2007
Posts: 14,062
Likes: 602
From: Henderson Nv-Rohnert Park/Sonoma C o. ca/born in NY Rockaway Beach.
Drifting
Joined: Jul 2005
Posts: 1,635
Likes: 190
From: Austin TX
So keep the stock headers for smog inspection and aftermarket in the time between.
I lived in SoCal when I bought mine and hated not being able to mod as much as I wanted. I say just do it during the times when you wont need the inspection and enjoy the ride
I lived in SoCal when I bought mine and hated not being able to mod as much as I wanted. I say just do it during the times when you wont need the inspection and enjoy the ride
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Thread Starter
Race Director
Joined: Apr 2007
Posts: 14,062
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From: Henderson Nv-Rohnert Park/Sonoma C o. ca/born in NY Rockaway Beach.
Im sure I can get a smog, but really dont want to deal with it..
rather do it once and be done with it.. thats why im looking for z06 parts.....
Tech Contributor
Joined: Jul 2002
Posts: 14,950
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From: St. Louis, MO
St. Jude Donor '08
Personally, IMHO the headers are such a good gain (Hoxxoh went to them) that if you are really into performance it's worth swapping. It's easy on our cars.
Former Vendor
Joined: Nov 2010
Posts: 2,210
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From: Denver CO
Peak Speed Shop porting
On a stock LS2, customers generally see about a 20 rwhp gain from our Radical porting and 14 rwhp gain from basic porting of their LS2 intake manifold. Here is a link to a thread that will give you more information: http://forums.corvetteforum.com/c6-p...-in-stock.html
You can also go to our website to see the difference between Basic porting and Radical porting. http://www.peakspeedshop.com/
You can also go to our website to see the difference between Basic porting and Radical porting. http://www.peakspeedshop.com/
Burning Brakes
Joined: Nov 2005
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St. Jude Donor '07
I had installed a ported intake manifold on my 2005 LS2 with only a tune and Vararam CAI. Nice improvement in throttle response and the butt dyno said more torque. Never had it on the real dyno, but it definitely made a difference that you could feel in throttle response which is what i was going for. I would do it.
Burning Brakes
Joined: Nov 2012
Posts: 1,049
Likes: 1
From: Wisconsin
Question I have, is whether that hp increase from the ported intake is additive to what you get from Halltech's (or anyone else's) CAI? I'm guessing it isn't. Air is air whether your getting it from CAI or intake ports. I'd get the answer to that before you spend your money on the intake and probably what could be a new tune.
Burning Brakes
Joined: Feb 2008
Posts: 769
Likes: 2
From: Zahnd Indiana
I myself will never own a sports car without a full exhaust and intake. It really wakes up the car. Hp numbers are good, but it's the all around experience. The car responds better, sounds better, and driving it becomes much more of a joy.
And after having a c5 for 5 years with a full exhaust and buying a stock c6...I can tell you first hand that the c5 was much more fun to drive till I threw on the exhaust on the c6
Instructor
Joined: Jan 2012
Posts: 216
Likes: 1
From: Honolulu Hawaii
Just for something to think about. all sorts of data on the ls2 intake on ls1tech.com.
Junk. I have modded c5s for a long time. Heads, cams, intakes headers etc. Of all the ls1 intake upgrades, the ls2 intake is at the bottom of the list. Matter of fact, a c5 zo6 intake makes more power than an ls2 intake.
I have longtube headers, xpipe, vara ram 2. Can't wait to get rid of this ls2 intake. Ported fast or a custom Wilson is on my list.
Junk. I have modded c5s for a long time. Heads, cams, intakes headers etc. Of all the ls1 intake upgrades, the ls2 intake is at the bottom of the list. Matter of fact, a c5 zo6 intake makes more power than an ls2 intake.
I have longtube headers, xpipe, vara ram 2. Can't wait to get rid of this ls2 intake. Ported fast or a custom Wilson is on my list.
Former Vendor
Joined: Nov 2010
Posts: 2,210
Likes: 6
From: Denver CO
Just for something to think about. all sorts of data on the ls2 intake on ls1tech.com.
Junk. I have modded c5s for a long time. Heads, cams, intakes headers etc. Of all the ls1 intake upgrades, the ls2 intake is at the bottom of the list. Matter of fact, a c5 zo6 intake makes more power than an ls2 intake.
I have longtube headers, xpipe, vara ram 2. Can't wait to get rid of this ls2 intake. Ported fast or a custom Wilson is on my list.
Junk. I have modded c5s for a long time. Heads, cams, intakes headers etc. Of all the ls1 intake upgrades, the ls2 intake is at the bottom of the list. Matter of fact, a c5 zo6 intake makes more power than an ls2 intake.
I have longtube headers, xpipe, vara ram 2. Can't wait to get rid of this ls2 intake. Ported fast or a custom Wilson is on my list.
Instructor
Joined: Jan 2012
Posts: 216
Likes: 1
From: Honolulu Hawaii
You are right in that the unported LS2 manifold is terrible. However, it responds very very well to porting and a ported LS2 manifold performs better than the LS1 or LS6 manifold. The primary reason is that the LS2 manifold is constructed of 3 pieces that are sonic welded together. Where the pieces match inside the runners is very rough. Porting smooths out those transitions for much better airflow.
After I do my wide body rear this month, I'm going to supercharge. Do you think a ported ls2 Mani is going to be safe for the boost?
Former Vendor
Joined: Nov 2010
Posts: 2,210
Likes: 6
From: Denver CO
Good info. I think ill do a couple dyno pulls. See where I'm at. Then do a home port jobaddressing the areas you mentioned. Re dyno and see how it goes.
After I do my wide body rear this month, I'm going to supercharge. Do you think a ported ls2 Mani is going to be safe for the boost?
After I do my wide body rear this month, I'm going to supercharge. Do you think a ported ls2 Mani is going to be safe for the boost?