01-13-2009, 12:21 PM | #1 |
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Horsepower gains.
Hi. What I would like to have is a breakdown, so I can have an idea of what to expect from this engine.
1st. Estimate on hp gain possibilities with out forced induction or internals 2cd. Estimate on hp gain possibilities with forced induction and no internals. 3rd. Estimate on hp gain possibilities with internals done and basic bolt-ons, no forced induction. 4th. Estimated on hp gain possibilities with internals and forced induction. I know this is alot, any help though would be much appreciated. I love the Camaro, but I am new to the whole 8 cylinder thing. I plan on modding and want to see how the different options might play out. Thanks! Dave Last edited by Silver Streak; 01-13-2009 at 05:18 PM. |
01-13-2009, 12:35 PM | #2 | |
I used to be Dragoneye...
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1st, I assume you mean bolt-on parts for this...probably 480-500. 2nd, Most stock engines can accept 7-8lbs of boost safely. At a stock 400hp, this translates into roughly 550hp-600hp. 3rd, 500-600, I'd imagine. But you're gonna shell out a lot of dough the higher your hp goal is going this route. 4th...virtually limitless. But the stock LS3 engine block is rated up to 1000hp, if my memory is correct. Any more than that and your engine is gonna explode. |
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01-13-2009, 12:50 PM | #3 | |
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01-13-2009, 12:58 PM | #4 |
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Check out what Lingenfelter folks are doing with the Corvette LS3, might give you some ideas.
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01-13-2009, 01:06 PM | #5 | |
Okie doke
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1st. Estimate on hp gain possibilities with out forced induction or internals I'd say just bolt ons will get you 460 - 470 (engine HP) range 2nd. Estimate on hp gain possibilities with forced induction and no internals. Roots style at about 8psi I would say will get you to the 550 engine HP range 3rd. Estimate on hp gain possibilities with internals done and basic bolt-ons, no forced induction. I'd say you may get to around 520 - 550 engine HP range .. 4th. Estimated on hp gain possibilities with internals and forced induction. Depends on how much you want to spend ... no limits for streetable HP here. Crowley
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01-13-2009, 02:46 PM | #6 | |
Petro-sexual
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JMVHO.
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01-13-2009, 05:20 PM | #7 | |
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01-13-2009, 07:25 PM | #8 | |
Master of Medicine
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I'm sure there are other threads out there showing FI capabilities, some have already given good estimations of power, I'd like to focus on one specific situation, that is cam only...So this would be CAI, headers/exhaust, tune, and cam...optionally, you could add an underdrive pulley (probably not worth more than 5hp, but does allow quicker reving)...with the LS3 a FAST intake will also be available, along with a FAST throttle body (102 mm, vs FAST 92mm for LS2), According to FAST, early testing on a STOCK LS3 engine with a Big Mouth 102mm Throttle Body produced gains of 14+ horsepower and 11 ft/lbs of torque at the flywheel over the stock intake. I can guess that when people learn how to port this, on a MODIFIED LS3, you'll start seeing 10-15 rwhp gains.
http://www.streetlegaltv.com/forum/f...-ls3-1908.html So for a cam only car, lets take the G8 for example, similar motor design, a little heavier, but just to show the potential, here is an Aussie vid of a cam only Holden G8 I'll include links to the mods, but other than a little lightening (which probably would only bring it even with the camaro weight), and running DR and skinnies. Check out the MPH...=power http://www.g8board.com/forums/showthread.php?t=974 Here is a chassis Dyno of a cam with mild heads, LT's and vararam C6...cam is an LG G6X3...This combination had not been tuned to optimize performance. http://i139.photobucket.com/albums/q...d/LouisLS3.jpg
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01-13-2009, 07:31 PM | #9 | |
Moderator
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• Cheap • Fast • Reliable • Pick 2 Obviously, the cheap and fast route is dangerous. The cheap and reliable route will be mostly cosmetic. The fast and reliable route will go as far as your desires and wallet take you. Spend a lot of time and money on every build component, and you will be educated and highly performance-oriented.
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01-14-2009, 08:55 AM | #10 |
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01-14-2009, 09:00 AM | #11 |
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Silly question from a newby! Please clarify "Bolt ons" is that like cold air intake etc?
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01-14-2009, 09:23 AM | #12 |
Petro-sexual
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Bolt-ons are typically most everything you can do to the exterior of the engine itself. Usually, CAI, full exhaust, pulley (ies), etc. It pretty much means everything that doesn't require removing a valve cover. I always thought to include intake manifolds too but I've never really noticed any consistancy either way.
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01-14-2009, 09:29 AM | #13 |
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Thanks!
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01-14-2009, 09:51 AM | #14 |
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Thanks for all the answers, this really helps with my planning! Anything that can be added for the performance of the car without getting into the engine would be considered a bolt-on excluding forced induction!
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