Pros of the Procharger would be that you already have it. The systems do work very well, especially since it's intercooled unlike the Vortech systems which are not. You sounds like you have the proper supporting mods. The belt can sometimes come back to bite you at higher boost pressures, but I don't think 6.5 psi is going to cause you any grief. Keep in mind that there are ways to make the system more efficient such as lowering the compression ratio (317 heads are great for that), changing the cam, etc.Quote:
Originally Posted by ColdWS6
How many miles on the engine? Do a compression check on all eight cylinders with the engine warm. If you find that there is a big variance or it's low across the board a rebuild might be a good precursor to going with boost.
What fuel system components did you get?
What transmission are you running? A 4L60E you might want a bit of a stall and a nice sized transcooler. In an M6 you're going to want to upgrade your clutch and possibly the slave cylinder depending on the year (01 and up have a better master and slave).
In regards to turbos, the setups are somewhat more complicated. My honest opinion is you NEED an intercooler with a turbo. Bad enough that you get heat from compressing air, but you are doing it with 1300+ degree air. to boot You don't need headers with a good turbo kit, the plumbing will be of a good quality, ideally the kit would be complete. Out of all the aftermarket turbo companies out there, there is one that I recommend to anyone (PM me; I don't believe they are a sponsor) especially because they have been around forever and their systems make great power. I have seen easily a half dozen turbo companies come and go. They all seem to make power, but something happens along the way and they fold up.
Also keep in mind that centrifugal superchargers DO NOT get power instantly. It takes engine RPM to make boost; the curves are proportionally linked unlike turbocharging. The only superchargers that have instant boost are root styles, like Magnason, Kenne Bell, Whipple, but none of those are directly made for F-bodies due to the cowl. There is one company that does make them to fit F-bodies, but the kits are $6500.
Does a turbo have to be properly sized? Yes, but that is dependant on many factors including where you want your powerband to be. Smaller turbos will generally mean the boost comes up sooner but peaks far earlier than something larger (say a 60-1 vs. a T-76). You need to be realistic in how you plan on driving the car. If you think you are going to bring it to the track once a year, build it to be a great street car (read: smaller turbo). It's not about peak power, it's going to be about your torque curve. Bigger torque curves are going to make the car more fun from light to light.
Just some random thoughts...
