i have a 2001 suburban with a 5.7 L v-8 i want to STS Turbo it but then ive heard do a pro charger and i was thinking what does every one think plz reply thanks
OK, back on topic.... I would suggest the supercharger, as they tend to work better with big-displacement engines. If the engine was smaller, the turbo would work better.
Essentially, what you have to remember is that a Turbo is most effective when the RPM's are high, and the Supercharger is more effective in the lower RPM band. Because the turbo has to spool up, it doesn't give you off the line grunt, where as the SC will start from the line, and will loose effectiveness as the speed mounts.
The biggest downside to the SC is parasitic loss, which is essentially the HP required to turn the belt. With a turbo, the downside is the lag between asking for the increased power and getting it.
For a Suburban, you aren't going to be traveling at very high speeds or RPM's, so the Turbo would be wasted for the most part. I think the SC would be more effective for the power band on the 5.7L.