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I'm running the stock 4.0 pulley with the ADM duel pump set up and made 666 rwhp. My boost is 8.5-9 psi on an 11.0 afr. So you may be making more power than you think....
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MODS:
ADM built 417, 2.9L Whipple with 3.250 pulley, ADM ported and polished LSA heads,ADM stage3 cam,ADM LSA belt drive system,ADM CAI race scoop, ADM dual fuel pumps, ID 850's, BMR full suspension, Gforce 9 inch kit with 3.5 inch driveshaft, Street Slayer twin carbon clutch, Lingenfelter oil seperator. Tuned by built by ADM Performance, 763rwhp,705rwtq
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