Quote:
Originally Posted by Chuck33079
How much are you going to push the SC? If they give you 600s, upgrade them to 750s or so. Don't go too big if you aren't going to need it. If you're going to swap out all the pullies and impeller on the blower and really push it, then you may need to go to 850s or 1000s. If you're getting a Walbro 255 with the kit, see if they have the option to upgrade to the Aeromotive for a little additional headroom.
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I believe they come with 750s and with the 8 lb pulley you will only run them about 80 percent. I asked Mark at Stillen about the 600s because I've seen that several times here and he told me they all come with 750s.