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    Exhaust crossover ports

    I'm doing my first port & polish job on a pair of aussie 302C heads for my 351C. I noticed that one cylinder on each head has a rectangular port connecting the exhaust valve bowl to the intake manifold. I can only guess that this is some kind of emissions reducing feature to reburn part of the...
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    Are new valves pre-ground at 3 angles?

    Probably a dumb question, but do new valves come pre-ground at 3 angles, or should they be touched up before installing them?
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    A request for owners of 69/70 A/C cars

    On 69/70 Mustangs with A/C there is a white plastic (actually nylon) lever on the defroster plenum that actuates the defroster vent door. These darn things are almost all broken, so the defroster doesn't work right, and nobody makes a reproduction. I'm thinking of having a few made up in a CNC...