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Old 04-22-2009, 03:00 PM   #51
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Great answer. Thanks! I'm a mechanical engineer and I spend a lot of time looking at energy consumption and air flow, so I love getting into the details of how things like this work.
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Old 04-24-2009, 02:47 AM   #52
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You guys are amazing, so helpful.

i have a couple questions for the guys that really know what they are talking about,

1. is it to early to ask how much psi is safe to push into the L99 (keeping stock internals)
2. what rwhp will put the automatic 2SS into around 11.7~
3. what other modifications will have to be done to the car, if any (brakes?suspension?etc?)

(Oh, and i want to keep it cheap and daily drivable) (Cheap being < 10k after install)

Edit: I am very sorry that i posted this in the V6 section, but this thread just seems to have a lot of legit guys replying to it, and there are no good threads like this in the V8 section.

Last edited by 69 Camaro 09; 04-24-2009 at 03:00 AM.
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Old 04-24-2009, 04:19 AM   #53
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Originally Posted by 69 Camaro 09 View Post
You guys are amazing, so helpful.

i have a couple questions for the guys that really know what they are talking about,

1. is it to early to ask how much psi is safe to push into the L99 (keeping stock internals)
2. what rwhp will put the automatic 2SS into around 11.7~
3. what other modifications will have to be done to the car, if any (brakes?suspension?etc?)

(Oh, and i want to keep it cheap and daily drivable) (Cheap being < 10k after install)

Edit: I am very sorry that i posted this in the V6 section, but this thread just seems to have a lot of legit guys replying to it, and there are no good threads like this in the V8 section.
2. This question is WAY too vague to answer. Theoretically, you can probably do it with the stock rwhp if you get the car light enough. Are you planning on running slicks? At the stock weight if your going to run street tires, you will probably need ~500-550 rwhp. With a good tire, you will need MUCH less than that. Probably ~450 rwhp.
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Old 04-24-2009, 01:24 PM   #54
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stock weight with drag radials. sorry for being vague, how can i narrow it down a little?
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Old 04-24-2009, 07:14 PM   #55
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stock weight with drag radials. sorry for being vague, how can i narrow it down a little?
with drag radials (~1.8-1.9 60') you will probably need roughly 420-440 rwhp.
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Old 04-24-2009, 07:40 PM   #56
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with drag radials (~1.8-1.9 60') you will probably need roughly 420-440 rwhp.
slap on a supercharger and go to town. in 11 sec. lol
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Old 04-24-2009, 08:53 PM   #57
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supercharger/turbo + drag radials = ~11.7? and i wont have to do anything suspension wise, or internal engine wise? !
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Old 04-24-2009, 08:55 PM   #58
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supercharger/turbo + drag radials = ~11.7? and i wont have to do anything suspension wise, or internal engine wise? !
keep the boost to a safe level and make sure the car is tuned and you should hopefully see 11's. but I dont know what kind of a driver mod you have.
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Old 04-25-2009, 02:34 AM   #59
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don't the autos have a open diff? I'd probably invest in a differential and maybe a valvekit for the auto, How much hp can the auto handle? he might need to upgrade that as well. Honestly it's too early to say with any certainty how much power the v6 can handle with stock internals, so you might want to get yourself a set of pistons/rods or budget them in if needed. I'm not familiar with the rear end on the new camaro, how much power can they reliably handle?
Thanks in advance
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Old 05-05-2009, 03:26 PM   #60
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Direct Injection

Hey guys, I have been creeping on the forums for a couple of weeks and I definitely love the new Camaro! I have been really interested in the V6 forum particularly because it's DI. I happen to have a Volkswagen that is DI (and turbo) and I have been modifying it and following the upgrades for over two years now. I may have some insight for you guys as far as what DI means and what it can do.

DI is simply amazing when paired with forced induction. My Volkswagen motor comes with a turbo from the factory with a 10.3:1 compression ratio. I am currently running 20psi of boost on a small turbo with that compression ratio with everything else remaining stock.

A big limitation for DI has been fueling, mainly getting the correct injectors for bigger turbos. The injectors have a very particular spray pattern that is designed specifically for only one engine model. If you deviate from this spray pattern at all you could be dealing with some annoying consequences (large amounts of sooting, rough and difficult cold-starts). These are some pit falls that my community has ran into during the tuning process.

11:1 is pretty high for boost in standard gas engine applications but, if what I have seen so far in the DI community is any indication of what this new GM motor can do; I foresee this motor making a lot of power with little boost without any major modification to the fueling or compression. There may be a lot of potential here depending on how hard the injectors are working already and what the fuel system can handle. The rods could be a problem but, we will just have to see.

Thanks!

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Old 05-05-2009, 07:43 PM   #61
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The rods are fine they're forged iron. It's the pistons that are cast and coated that would be the mechanical weakpoint. The other issue is needing a high pressure, high volume fuel pump. The injector as you pointed out would need to be upgraded depending on the boost pressures. Anyone got a dyno sheet of their V6 with a readout of the A:F ratio? That would be able to tell us a little more about what the stock V6 is capable of boosted.
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