What Dude said. I think you're strangling this thing on both end. You need a bit more than a 600cfm carb and the exhaust needs to be opened up. The gears are killing your performance. What about a set of 3.08s? A bit more gear and still highway friendly? It might work.
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12.84 @ 106.89 with street radials.
12.63 @ 108.39 on drag radials.
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