Are my expectations too high?

smithchargers said

Has anyone had a similar combo with the 380 crate engine and what did you run?

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I have a 73 Duster that used to have a 380hp crate motor in it. It had a 9 inch converter, 3.91 gears, Holley 750dp, and a race weight of 3310lbs. The best it ran was 12.30's.