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Definitely possible. Did you confirm 3.73 gears? And what about timing? Any idea where it's sitting? There's just a lot of things that can affect performance. You should be able to manually shift it and find the power band. But you'll want to find out if it's an aod first. If so, you'll be doing the 1-2 shuffle.Thanks for the help, not sure what transmission is installed it’s not factory, everything on the engine is new along with fuel tank and 3:73 gears, can it be a torque converter?