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| | GMInsideNews Forums - Northstar in a Caddy vs other brand |
 | | The Northstar SC is also the same engine, but displacement was decreased to 4.4L. |
 | | So generally, for a fixed geometry (bore, stroke, etc) engines are designed to operate in an envelope of performance and can be customized to a given application by playing with other components like valvetrain design and timing, ignition timing, intake/exhaust manifolds, etc. And some tweaking may improve emissions (combustion) but hurt performance (horsepower) and vice-versa. |
 | | When an engine runs at 1000-5000 rpm, you have only msec (Milli-seconds) to accomplish a lot of stuff--Deliver fresh air, Inject fuel, vaporize it, mix it with air, ignite the mixture, burn it, and evacuate the burned products. |
| www.gminsidenews.com /forums/printthread.php?t=11653 (1514 words) |
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