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Old 08-21-2009, 07:14 PM
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I agree, the program is pretty wildly optimistic. You might get 500 hp with all your ducks in a row tuning-wise. I feel Holley is out to lunch telling you you need a smaller carb, they just want to sell you one. 50 cfm will be unnoticable, the 750 is a good choice and I personally wouldn't go smaller, especially on a dual plane intake. IMO the gear drive is a bad choice, use a good timing chain set, my opinion is the only place for a dual idler gear drive is on someone else's motor, they are too sloppy and transfer harmonics from the crank up to the valvetrain.
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