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  1. GN7 On the Dyno
    Need some input on what Size carb would work well with a 489c.i.d.BBC. The engine is a 454 ,0.30 over bore,with a 4.25 stroke steel crank,small dome pistons,990 rectangle port heads and full mechanical roller set up, and single plane intake. Jet boat with a "B" impellor. I am looking for...
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