02-27-2013, 05:20 PM | #71 | |
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02-27-2013, 05:42 PM | #72 | |
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But again the bottom line is GM Powertrain spent years and many millions of dollars developing the Gen V V8 with DI, AFM and DOD for performance cars like the C7.
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02-27-2013, 05:44 PM | #73 |
Drives: 2011 2SS/RS LS3 Join Date: Nov 2011
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...I must have missed it somewhere...(senior moment, perhaps)...what's DOD?...lol
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02-27-2013, 05:48 PM | #74 |
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Well don't forget the trucks...all that money they spent went into a ton of different setups, it only makes sense that they would have a lower displacement HP motor because that would be like putting an LS7 into caddys, trucks, and even the SS and Camaro..the LT1 was "specifically" designed for the corvette but the need for HP and MPG's is needed in many other applications.
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02-27-2013, 06:19 PM | #75 |
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Displacement on Demand. The precursor to AFM.
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02-27-2013, 06:29 PM | #76 | |
Drives: 2023 SGM Camaro 2SS 1LE 6M Join Date: Apr 2009
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The LS1, LS2, LS3 have been the base performance engines from GM since 1997. As you have seen the displacement has gone up from 5.7L to 6.0L to 6.2L during the Gen IV LS engine run. This has been done to meet higher and higher performance objectives. With no real penalty in external size and weight from an LS1 to LS3 the added HP and torque from larger displacement has allowed cars like Corvette to remain competitive in the marketplace. If they can maintain the performance increases from the larger displacement and still hit fuel economy targets for Gen V with the new technology there is no reason to go lower displacement. As for the LS4 powered FWD W cars they will probably not be duplicated again. A combination of CAFE and the advent of modern and more powerful direct injected 4cy and V6's with forced induction options will make the FWD V8 obsolete.
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02-27-2013, 07:00 PM | #77 | |
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I can say that the vast majority of consumers do not share our passion. And on GM's list of priorities for developing a new Camaro or V8 engine having an easily modifiable engine is far closer to the bottom of the list than the top. Fuel economy numbers and advertised HP and torque will take precedence because those things will help sell the cars that are powered by these engines. It’s hard to say GM doesn’t care about aftermarket performance because of the vast amount of products from crate engines to even cars like COPO Camaro but when it comes to modifying street cars they sell it’s just not a high priority.
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02-27-2013, 07:21 PM | #78 | |
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The only reason they are doing it is to appease the government. If we were all that concerned about mileage, we would be driving V6 Camaros. The gimmicks GM is using to increase mileage is to meet artificial marks set by the government, not by the people buying the car. |
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02-28-2013, 06:51 PM | #79 | |
Drives: 2007 Corvette, 2004 Grand Prix GTP Join Date: Jan 2012
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Not saying your wrong, there is like a million posts on the C7 forum so could have easily missed it. Could you send me the link to this? Thanks! |
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02-28-2013, 07:33 PM | #80 | |
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03-04-2013, 10:57 AM | #81 | |
Drives: 2011 2SS/RS LS3 Join Date: Nov 2011
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03-04-2013, 11:27 AM | #82 | |
I used to be Dragoneye...
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Certainly don't want AFM to activate that one freak moment when you're coasting to a turn around a track! I'll see if I can find it - but I haven't been saving C7 documentation like I do Camaro stuff... |
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03-04-2013, 11:37 AM | #83 | |
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03-04-2013, 11:43 AM | #84 | |
I used to be Dragoneye...
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It sounds as though this new AFM is something quite special in terms of effectiveness...I can only imagine that means, partially, it's working more often...so that could be bad in a spirited-driving situation. Wouldn't surprise me one bit that engineers made a point to offer a choice, so Corvette wouldn't get bad press from enthusiasts... Still looking for where I saw that... |
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