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

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Old 01-29-2011, 03:02 AM   #1
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Question 400 RWHP L99: Bolt-ons only?

Is this feasible? I don't need a 9 second car, and I definitely don't have the cash for forced induction but I would like to have some bite to back up the bark, especially when pulling up next to five-0s...

Anyone achieve this?
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Old 01-29-2011, 03:15 AM   #2
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Quote:
Originally Posted by Revo1 View Post
Is this feasible? I don't need a 9 second car, and I definitely don't have the cash for forced induction but I would like to have some bite to back up the bark, especially when pulling up next to five-0s...

Anyone achieve this?
By "bolt ons" are you against going into the engine at all...???

The reason I ask is this... I would think it would be easily attainable with a good exhaust, LT's, a cam, possibly doing away with AFM, (LS-3 conversion) and a good tune...
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Old 01-29-2011, 03:22 AM   #3
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By "bolt ons" are you against going into the engine at all...???

The reason I ask is this... I would think it would be easily attainable with a good exhaust, LT's, a cam, possibly doing away with AFM, (LS-3 conversion) and a good tune...
I would LOVE a nice lumpy cam, but it's not a a realistic goal right now, and probably won't be for awhile...

On the agenda right now are: CAI, tune, and headers (possibly shorties, stupid CA carb laws )
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Old 01-29-2011, 04:30 AM   #4
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Old 01-29-2011, 04:41 AM   #5
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I would LOVE a nice lumpy cam, but it's not a a realistic goal right now, and probably won't be for awhile...

On the agenda right now are: CAI, tune, and headers (possibly shorties, stupid CA carb laws )
you might be able to perform the LS-3 conversion anyway... if you find the right person that is building a motor for F/I.

How.... Well, in my case, I am having a fully forged rotating internals stroker LS-3 built for twins turbo's. I will have the lifters and cam shaft left over, but they are already spoken for. I'm giving them to a friend so he can do a conversion. I'm not sure what all it entails, but there it is...

Ask around, and maybe you'll get lucky and find someone willing to sell you those pieces needed for a reasonable price...

good Luck... are there not any LT headers available that are Carb legal, or is it the moving of the cats that messes things up... No offense, but damn I'm glad I don't live in California.
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Old 01-29-2011, 06:41 AM   #6
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Is this feasible? I don't need a 9 second car, and I definitely don't have the cash for forced induction but I would like to have some bite to back up the bark, especially when pulling up next to five-0s...

Anyone achieve this?


First of all.....We all need 9 second street cars!!!!!!!!!!!!!

You won't get to 400 rwhp without a cam. Lt's, CAI, and a tune will put you around 370. I'm not sure about the TB but figure 8 rwhp to be safe. You're still quite a bit short but 380 in an L99 is pretty gd and will do what you want. You could always add a converter, pretty easy bolt on, and feel like you have 450 rwhp. It will be your car launch really quick.
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Old 01-29-2011, 07:25 AM   #7
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nitrous.
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Old 01-29-2011, 08:59 AM   #8
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Where there is a will, there is a way.

I think it is borderline feasible. but one has to be fairly dedicated to do it

a victor jr or carry's intake, 2" headers, edelbrock hi flow elbow, moroso electric water pump on a l99 car sitting on some bogarts with 26" tall tires that are over inflated
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Old 01-29-2011, 09:14 AM   #9
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cam is about the only thing that's gonna get you there.... the other thing is the shorty headers. Even hooked to high flow cats aren't gonna give a whole lot.... at best I would think 15 to 20 whp with a tune.

I'm not familiar with California emissions but LTs with cats work? That would be your biggest gainer from all the bolt ons.

Just as some info.... I have a friend who has a LS3 with cold air, shorty headers, SOLO HF cats, and tune... and just made it 400whp. He was like 385 without headers and tune....

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Old 01-29-2011, 09:44 AM   #10
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cam is about the only thing that's gonna get you there.... the other thing is the shorty headers. Even hooked to high flow cats aren't gonna give a whole lot.... at best I would think 15 to 20 whp with a tune.

I'm not familiar with California emissions but LTs with cats work? That would be your biggest gainer from all the bolt ons.

Just as some info.... I have a friend who has a LS3 with cold air, shorty headers, SOLO HF cats, and tune... and just made it 400whp. He was like 385 without headers and tune....

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You might be able to get there with the following:
Long Tube Headers
Ported Throtte Body
CAI
Underdrive Pulley
Tune

Not sure about shorty and hight flow cats.
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Old 01-29-2011, 11:37 AM   #11
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CA carb laws won't allow me to touch the cats :(

I believe Edelbrock has some ported LT's that will pass the sniffer, (for gen 4 anyway) but the visual will flop like a dying fish :/

Granted I don't have to smog for almost 5 years, so what the hell

Even if I stick with bolt-ons tho, this won't be an overnight process... Money's still gonna be tight, so one step at a time. I read an article in Camaro Now called "Triple Play" in which they took a stock LS3, added LT's, CAI, and a tune and got 404RWHP out of the car.

I would love to go straight for an LS3 conversion, with a cam, but invasive procedures like that cost bucks. You guys have thrown out alot of great ideas, I have alot to look into!
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Old 01-29-2011, 11:39 AM   #12
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This can be done. Mine laid down 401rwhp with the mods below. Intake, ram air, long tubes, no cats, catback exhaust, and a tune.
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Old 01-29-2011, 11:42 AM   #13
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Quote:
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CA carb laws won't allow me to touch the cats :(

I believe Edelbrock has some ported LT's that will pass the sniffer, (for gen 4 anyway) but the visual will flop like a dying fish :/

Granted I don't have to smog for almost 5 years, so what the hell

Even if I stick with bolt-ons tho, this won't be an overnight process... Money's still gonna be tight, so one step at a time. I read an article in Camaro Now called "Triple Play" in which they took a stock LS3, added LT's, CAI, and a tune and got 404RWHP out of the car.

I would love to go straight for an LS3 conversion, with a cam, but invasive procedures like that cost bucks. You guys have thrown out alot of great ideas, I have alot to look into!

you can do the conversion yourself (physically speaking) to save a little money.


but for the power you want and to still pass CAFE/CARB/etc without having to buy the higher priced "CARB certified" stuff....

Nitrous. just hide the install very well.
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Old 01-29-2011, 12:10 PM   #14
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This can be done. Mine laid down 401rwhp with the mods below. Intake, ram air, long tubes, no cats, catback exhaust, and a tune.
Dude NICE! There is hope!

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you can do the conversion yourself (physically speaking) to save a little money.


but for the power you want and to still pass CAFE/CARB/etc without having to buy the higher priced "CARB certified" stuff....

Nitrous. just hide the install very well.
Unfortunately I'm not nearly qualified to do the LS3 conversion myself :/ Even with the know-how I'd have to find someone nice enough to let me take over their garage for a couple weeks as I live in a apartment. The apt is pretty cool about me working on the car in the lot (I do my own brakes, etc and they haven't said a word as of yet) but anything that can't be wrapped up in one day, and/or leaves stains on the blacktop wouldn't fly...

N20 would def get the job done, and is a fairly easy install right? (If done correctly) But it is highly illegal and kinda volatile, no?

I'd like to pass smog, but that isn't completely paramount. Like I said I have a few years left, so as long as I can return it to a passable state without too much trouble when that time comes, I'm a happy camper
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Old 01-29-2011, 12:18 PM   #15
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Old 01-29-2011, 12:32 PM   #16
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Simple bolt ons will NOT get your 400 rwhp in a l99, unless you cheat and use STD numbers. You will have to go all out and get the really expensive parts to nickel and dime yourself to that 400 rwhp mark, such as an electric water pump, lighter driveshaft, full roller rockers, single plane intake, etc.

If you want cheap and effective. Get some headers, cold air intake, and a tune, and get yourself a nitrous kit and hit it with a 100 shot. The motor will take a 100 shot all day long, it isn't illegal to have on your car, and is your cheapest (and imho the easiest) route.
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Old 01-29-2011, 01:14 PM   #17
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well i think you should get LTs, CAI, ported throttle body, and a nice tune. and when its time for smog test. take the headers off
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Old 01-29-2011, 01:49 PM   #18
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With the Fastlane Pipeline intake, ARH longtubes into stock mufflers, and a canned tune (before I put the headers on), I made 381hp / 387tq on 91 octane. With good bolt-ons and a good tune, 400 should be no problem.
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Old 01-29-2011, 03:40 PM   #19
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The dyno game can get expensive.

If you change your thought to making the car fast instead of dyno #'s - put in a good Stall converter.
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Old 01-29-2011, 03:43 PM   #20
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I live in Indiana so passing the sniffer doesn't matter to me, but I thought solo high flow cats would pass.
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Old 01-29-2011, 03:47 PM   #21
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I live in Indiana so passing the sniffer doesn't matter to me, but I thought solo high flow cats would pass.
Sniffer maybe, visual no
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Old 01-29-2011, 03:47 PM   #22
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No. He can't change or move the cats. They need to stay stock and in stock position.
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Old 01-29-2011, 03:50 PM   #23
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Full exhaust,
Cold air intake,
Ported TB and intake,
and shorties, should get you close.
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Old 01-29-2011, 03:56 PM   #24
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I'm planning on long tune headers x pipe custom tune and i already
have axle back Borla Type S & Airaid intake...Dealer tells me i WILL
get 415 - 425 RWHP...On a L99-SS...
Why is tthere people saying only 370 RWHP...
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Old 01-29-2011, 04:00 PM   #25
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You'll need all the usual bolt ons plus a pretty generous dyno to pull off 400rwhp. But I wouldn't be concerned with dyno numbers. Its about how your car runs.

With intake, full exhaust (with long tubes) and a tune you can see 50+ ft lbs of torque on an L99. That is what makes your car haul axx. An L99 with the above mods is a completely different car than stock. We have a bunch of L99s running low 12s with the above mods.

With shorties, its just not going to happen. But that doesn't mean you can't have a fast car with shorties. You just won't see 400 rwhp that's for sure. But that really shouldn't be a conern.

My car ran 12.1@ 114 mph and it dynoed 352 rwhp the last time it was on a dyno.
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