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engine torque,cam profile,gear ratio, compression etc... all play a factor in choosing the right stall speed, in a 9:7 compression 305 street engine with 4:10 gears a 2500 was not enough i needed a 3500 to reach the engines peak performance. that was with a much different cam than stock. you really dont need to upgade your converter to feel a difference with the gears, but if you plan on doing any head or cam work 3000 is not going to be enough.
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