I am running a SN 93 on my Dakota w/406ci stroker. I am watching my SN 93 starting to loose boost around 4500 rpm I am running a 7" bottom pulley and a 3.5 top. I am wondering if I am making it boost too early with this pulley combination. Should I try a 3.75 top pulley and let it boost a little latter in the rpm range. I was told that if I am turning the SN too fast that I will be putting too much hot air into my motor and hurting my performance, is this true?
It now boost 6psi, I would love to raise the boost a little, but was told that the best thing would be to upgrade to a larger S/C. Give me some insite to what yall think I can do to better my motor.
Thanks Michael
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