Cam duration is going to matter a lot with that. My guess with that lift is about a 235 to 245 at .05. If Im right thats not nearly enough stall. But you have some other issues. The MPH is low as well. Getting the timming and jetting right can make a big difference. More gear would help to. A 350 is just to small for something that heavy running on motor alone. You would be happier with something built more for torque. A 400 with vortec heads and a 220 cam. Now thats fun.
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