On that big 7.5 liter engine, .042-.046 stock; if hotter cam go .046-.050 and make sure ignition is in good shape. preferrably aftermarket coil at least or ign box set up.
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On that big 7.5 liter engine, .042-.046 stock; if hotter cam go .046-.050 and make sure ignition is in good shape. preferrably aftermarket coil at least or ign box set up.