TTAC commentator edgett writes: Since the current pushrod LS-X engines reportedly offers a better power-to-weight ratio than an equivalent Porsche engine, and returns excellent fuel economy, why aren’t other manufacturers emulating the same kinds of evolutionary upgrades which GM applied to their small-block V8? Sajeev answers: Naturally aspirated Porsche boxers may be lighter than an LS-X, but don’t
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Piston Slap: Pushrod Prattle Edition
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