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

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Old 03-28-2009, 12:04 AM   #1
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LS3 to 500 HP Suggestions pls Economically

So to add 100 ponies without head work: Shouldn't there be G8 LS3 mods available soon ??

1) Exhaust -
2) Headers -
3) Intake -
4) Mild Boost -
5) Free Air induction -
6) Program ECM (tuning)-
7) Maybes like changing pulley sizes -
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Old 03-28-2009, 12:15 AM   #2
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My LS1 easy hit 455rwhp (~500hp crank) with nothing but a p1sc procharger @ 5 psi, LT's and borla cat back, and a very good tune. Id say the quickest way to get to 500hp is via procharger, they already have g8 kits, engine bay is similar to camaros:


Id like to do something like this once i get my camaro, i got the kit from my ls1, will justneed some parts to adapt it. But i think its smart to wait it out the first production year to make sure any recalls/bugs are fixed by the warranty.

And of course theres always nitrous.

Edit: notice the weird placement of the air intake from the procharger, good SS have that cowl hood.
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Old 03-28-2009, 12:26 AM   #3
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You're not going to get 500fwhp without doing a cam, unless you go forced induction which is a great way to go, but not economical. Staying NA, you should get 500fwhp with:

Air intake
Long tube headers- I'm not sure if the LS3 likes 1 3/4 inch or 1 7/8 inch better for NA power.
Mid-pipes with high-flow cats
Cat-back exhaust
Moderately aggressive cam with appropriate valve springs
Dyno tune
Heads can stay stock

Your best bet is to go onto a Corvette forum and ask the LS3 vette guys what they're doing.
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Old 03-28-2009, 03:43 AM   #4
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The GMPP "Hot cam" makes 50hp with no other mods.
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Old 03-28-2009, 04:43 AM   #5
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The GMPP "Hot cam" makes 50hp with no other mods.
Yes but won't it void the warranty? I would love to do this but I'm not sure.
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Old 03-28-2009, 07:32 AM   #6
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Vettes are making 500 RWHP with bolt-ons and cam, they are making ALMOST 400 rwhp stock. I think if you are willing to do the bolt-ons: headers, exhaust, CAI, Pulley, custom cam, Tune...you will exceed where you want to be, if you don't mind a few extra $$ you can throw on the new FAST 102 intake and add an additional 12-20 rwhp.

If you are worried about warranty, then leave it stock. You have to pay to play in this game, its all a gamble. My TBSS just spun a rod bearing, so now I'm having to use alot of my camaro "mod money" to fix it. I'm not gonna "put it back to stock" then take it to the dealer like nothing happened, that's just dishonest. Understand that ANYTIME you start making significiantly more power than stock, things are gonna tear up, and you must be prepared $$ to fix it (especially if you will be depending on the camaro as transportation).
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Old 03-28-2009, 12:06 PM   #7
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Im going to be supercharging .. after having an 04 cobra at 509rwhp / 520rwtq .. nothing else will cut the mustard .. I'll do magnacharger or something like that for the best low end response (nothing like it) .. I'll be shooting for at least 600 crank HP ..

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Old 03-28-2009, 12:28 PM   #8
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500hp or 500rwhp?? magnusson is releasing a tvs 2300 application within the next month or so and that with supporting mods. or you could always go cam or heads and cam. i wouldnt waste money on a hot cam theres alota better out their for same or even less cash.

honestly id go (when there availible)
ar or kooks headers
corsa cb
cai
pulley
cam
tune

these will get you 500+rwhp and with addition of some tea ls3 heads and lsxr intake you be at the 550+rwhp range
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Old 03-28-2009, 12:40 PM   #9
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Originally Posted by blackedout010 View Post
500hp or 500rwhp?? magnusson is releasing a tvs 2300 application within the next month or so and that with supporting mods. or you could always go cam or heads and cam. i wouldnt waste money on a hot cam theres alota better out their for same or even less cash.

honestly id go (when there availible)
ar or kooks headers
corsa cb
cai
pulley
cam
tune

these will get you 500+rwhp and with addition of some tea ls3 heads and lsxr intake you be at the 550+rwhp range
I don't think you will find it that easy for what you are saying will give you 500 rwhp .. no way you are getting 140hp out of headers, cb, cai, pulley, cam, and tune (at least and not still be a daily driver) ... maybe 500 rwhp w/ heads and cam etc ..

just my 2 cents .. 500 crank you could do I think though ..

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Old 03-28-2009, 12:49 PM   #10
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Originally Posted by Crowley View Post
I don't think you will find it that easy for what you are saying will give you 500 rwhp .. no way you are getting 140hp out of headers, cb, cai, pulley, cam, and tune (at least and not still be a daily driver) ... maybe 500 rwhp w/ heads and cam etc ..

just my 2 cents .. 500 crank you could do I think though ..

Crowley
correct typo their you will be in 450-460 range with a cam. i was unclear wether he was asking 500hp or 500rwhp. however if u add heads and an lsxr intake you can hit 500rwhp mark.
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Old 03-28-2009, 12:52 PM   #11
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Originally Posted by pharmd View Post
Vettes are making 500 RWHP with bolt-ons and cam, they are making ALMOST 400 rwhp stock. I think if you are willing to do the bolt-ons: headers, exhaust, CAI, Pulley, custom cam, Tune...you will exceed where you want to be, if you don't mind a few extra $$ you can throw on the new FAST 102 intake and add an additional 12-20 rwhp.
That's a bit optimistic for the LSXr intake. It gained 14hp at the CRANK on a stock LS3. I saw a post on ls1tech.com where someone with a built LS7 gained 21 rwhp. So for a typical bolton/cam LS3 you might see 10 rwhp (guessing).

If you're planning on 100hp over stock (Im assuming you're wanting 500hp at the crank), you're GOING to void your warranty. To do what would be required to make that much horsepower, you'll have to use something that will void it, be it a new cam, supercharger, intake manifold, etc.

Anyway, if you're shooting for 500 crank hp, mild cam, long tubes, CAI and tune should get you there.

If you're shooting for 500 rwhp, you'll need a supercharger (easiest, but mos expensive), or a slightly hotter cam, long tubes, CAI, and tune.

GMPP makes what they call the ASA HOT cam. It's the one used in the ASA racing series. Same lift as the standard HOT cam, but quite a bit more duration. And the GMPP cams are as cheap as any cam out there. Especially considering you don't have to change valve springs!
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Old 03-28-2009, 01:00 PM   #12
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That's a bit optimistic for the LSXr intake. It gained 14hp at the CRANK on a stock LS3. I saw a post on ls1tech.com where someone with a built LS7 gained 21 rwhp. So for a typical bolton/cam LS3 you might see 10 rwhp (guessing).

If you're planning on 100hp over stock (Im assuming you're wanting 500hp at the crank), you're GOING to void your warranty. To do what would be required to make that much horsepower, you'll have to use something that will void it, be it a new cam, supercharger, intake manifold, etc.


If you're shooting for 500 rwhp, you'll need a supercharger (easiest, but mos expensive), or a slightly hotter cam, long tubes, CAI, and tune.
how do you figure supercharger is easiest??? not to be rude or come off bad have you ever owned a car with an sc?? ive had 2 and tons of headaches. from pulley combos to belt slippage both were constant headaches. with all the knowledge people have on ls based motors nowadays a good old heads and cam package is the way to go with least amount of hassle.
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Old 03-28-2009, 01:03 PM   #13
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Yes but won't it void the warranty? I would love to do this but I'm not sure.
It's a GM part and if installed by GM service people should be covered under warranty also as far as I know.
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Old 03-28-2009, 01:10 PM   #14
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how do you figure supercharger is easiest??? not to be rude or come off bad have you ever owned a car with an sc?? ive had 2 and tons of headaches. from pulley combos to belt slippage both were constant headaches. with all the knowledge people have on ls based motors nowadays a good old heads and cam package is the way to go with least amount of hassle.
I have not. I helped a buddy with a '97 Firebird Formula install his procharger a few years back, but no personal experience. But I did personally find it easier to install that supercharger than to install a new camshaft in that same car. He got rid of the S/C about a year after we put it in and went with a nitrous grind cam and a 175 shot of the giggly juice and a 3xxx stall converter. I know he had occasional issues with the S/C, but it wasn't his main decision to change over. And I don't know how much room is under the hood of the new Camaros, but changing cams in the old f-bodies were a bit of a pain.

I didn't mean to imply superchargers were the magic horsepower pill for everyone. That was the only one I've installed, and like I said I never had any personal experience of owning one. Didn't mean to come across as a know it all. I should have stated that between changing cams and installing a supercharger, the one that I've put in was much easier than the camshaft swap.
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Old 03-28-2009, 01:13 PM   #15
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It's a GM part and if installed by GM service people should be covered under warranty also as far as I know.
This has been discussed in several other forums. Just because it's made by GM does not mean they will cover it. The warranty for your car covers what came on it and nothing else. The camshaft itself comes with a warranty, but installing it will void the warranty on your car.
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Old 03-28-2009, 03:56 PM   #16
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This has been discussed in several other forums. Just because it's made by GM does not mean they will cover it. The warranty for your car covers what came on it and nothing else. The camshaft itself comes with a warranty, but installing it will void the warranty on your car.
correct if you have to have those numbers your warranty is pretty much out the door.
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Old 03-28-2009, 03:58 PM   #17
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That's why you install the cam yourself and don't tell them.

LOL I can see them starting it in shop.. "lop lop lop lop lop"... uh.. ..lol.



The engine already comes with a nice cam. Changing it gonna hurt your MPG big time but I assume modders realize that of course.
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Old 03-28-2009, 05:47 PM   #18
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so none of these mods need supporting mods like injectors, maf or fuel pump?
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Old 03-28-2009, 05:51 PM   #19
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so none of these mods need supporting mods like injectors, maf or fuel pump?
to get your 500+rwhp mark yea you will need injectors pump etc
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Old 03-28-2009, 05:59 PM   #20
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how do you figure supercharger is easiest??? not to be rude or come off bad have you ever owned a car with an sc?? ive had 2 and tons of headaches. from pulley combos to belt slippage both were constant headaches. with all the knowledge people have on ls based motors nowadays a good old heads and cam package is the way to go with least amount of hassle.
Yea its extra maintenance you have to do. On the procharger, u have to change the oil on the unit it self every 5k miles or so, since its a self contained unit. I had to swap pulleys every few months until ATI made their pulleys better. It wasnt that bad imo.

Also installing or removing, for the procharger, is not hard since its bolt on, and you can still retain warranty if you uninstall and put back all the stock parts. Also its decent on fuel economy, doesnt impact it as hard as a cam or a roots blower would. I got 20mpg consistently running 5psi and putting out 455rwhp on my ls1.
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Old 03-28-2009, 06:00 PM   #21
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to get your 500+rwhp mark yea you will need injectors pump etc
Oh i left this out, for my procharged ls1, i upgraded injectors, intank fuel pump, and also added an a1000 fuel pump booster which turned on at 2k rpms, but that was overkill imo (was planning on running dry nitrous at the same time).
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Old 03-28-2009, 06:05 PM   #22
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Im going to be supercharging .. after having an 04 cobra at 509rwhp / 520rwtq .. nothing else will cut the mustard .. I'll do magnacharger or something like that for the best low end response (nothing like it) .. I'll be shooting for at least 600 crank HP ..

Crowley
+1 My cousin 03 Cobra with 15psi of boost was freaking awesome. I am going to bolt on a supercharger. Personaly I think TVS 1900 supercharger and no more than 6psi Should be ok without upgrading internals. 600hp is my goal aswell.
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Old 03-28-2009, 06:09 PM   #23
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Oh i left this out, for my procharged ls1, i upgraded injectors, intank fuel pump, and also added an a1000 fuel pump booster which turned on at 2k rpms, but that was overkill imo (was planning on running dry nitrous at the same time).
correct! im not against superchargers in anyway. i just meant that heads and cam are a good way to go as well. its pretty much a personal preference just like catback systems lol. but 500 hp mark can be ubtained with either. but lets face it if you want big hp odds are your gonna void your warranty anyways.
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Old 03-28-2009, 06:13 PM   #24
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+1 My cousin 03 Cobra with 15psi of boost was freaking awesome. I am going to bolt on a supercharger. Personaly I think TVS 1900 supercharger and no more than 6psi Should be ok without upgrading internals. 600hp is my goal aswell.
iv had a cobra with a kb 2.6 and yes they are fun. keep in mind modular motors absolutely love forced induction!!
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Old 03-28-2009, 07:37 PM   #25
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how do you figure supercharger is easiest??? not to be rude or come off bad have you ever owned a car with an sc?? ive had 2 and tons of headaches. from pulley combos to belt slippage both were constant headaches. with all the knowledge people have on ls based motors nowadays a good old heads and cam package is the way to go with least amount of hassle.
I correct setup will not yield belt slippage or issues ... and I'll stand by anyone's comment on here that it will be the easiest to 500rwhp

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