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American Supercars Everything about American supercars.   Price-Check

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Old 08-06-04, 04:37 AM   #21
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positive displacement superchargers, which tend to heat the air up more than their centrifugal cousins due to the more violent nature of their mechanism do really benefit from charge cooling. When done elegently, like in the supercharged AMG cars, it can help keep the power curve running longer and keep the motor consistent, aside from making the most of the charge. Also, in the AMG cars, the S/C sits between the cylender heads, which is probably about the hottest place on the engine, so it is needed more. It really depends on the setup and the car. Some examples of production supercharged cars without intercooling are not very stellar though. Like GM's supercharged 3800 V6, that should gain more power than it does over the N/A 3800, i suspect an intercooler might fix it.
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Old 08-10-04, 12:50 AM   #22
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Then again, I doubt GM is looking for maximum power with their supercharged 3800, but rather a nice safe power boost that can be cheaply recreated with a mass production engine without dipping into the mileage too much, it runs only about 8 psi. I believe. Boost past a certain point would be detrimental without charge cooling, and that would increase expense. GM also wants the pinache of being able to say a car is Supercharged!

The conservative setup that GM uses on the 3800 makes for an inexpensive and attractive option, and it really does spice up the performance. There are also aftermarket pulleys available for this application to crank it up a bit more.
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Old 08-10-04, 03:39 AM   #23
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8lbs of pressure is a fair ammount. It should give more than 40hp. A new change has gotten power up to 265hp. Just the same, the 3.8 should be making 265hp naturally aspirated. The new GM 3.6 makes a naturally aspirated 255, but who knows. The supercharged 3.8 is unique if nothing else and makes an interesting driving experience. It is just my belief that they could have 320hp and power past 4500rpms if they intercooled and optimized. You just can't argue with more power, as long as they are spending for the S/C, why not spend a little more to really make it worthwhile.
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Old 03-02-05, 10:41 PM   #24
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the thing with the new gt engine is i believe it is an upgraded version of the superchared 5.4 litre engined used in the lightning pick up truck. the truck itself is very quick and they took a very tourqy engine and got more power from it, no wonder the new gt is so fast
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Old 04-12-05, 08:43 PM   #25
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There is a big difference from the Lightening, well two actually. The first is that the GT has 4V/cylender SVT heads, the lightening had 2V heads. The lightening had a Roots type blower, whereas the GT has a lyscholm type, which is a lot of why it is more powerful and had tenacious top end.
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