Modeling Performance -- why another 50 hp can but may not help

[Bruce Nunnally]

Cadillac STS-V performance can be modeled, as with any other vehicle, using software similar to the CarTest 2000. Simulators don’t always give perfect exact real-world predictions of exact performance, but they offer a ready way to test our assumptions and to model and understand the results we do find.

The 2006-2009 Cadillac STS-V has a supercharged DOHC, VVT Northstar rated at 469 hp and 439 lb ft of torque. Originally GM estimated that the engine would produce 440 hp, but in the final SAE certification some assumptions changed — such as normal supercharger coolant temps instead of worst case — and the final rating was 469 hp.

Read More: http://caddyinfo.com/wordpress/cadillac-sts-v-performance-modeling/#