Saturday, April 16, 2016
What do you think about 2016 Strut Shock Absorber Report
Even the 5.3L--just 0.5 liters larger--gets all the press, to say nothing of the 6.0L and 6.2L variants. True enough, there is much to be said for displacement, both for its natural torque production and the bigger bore's ability to improve cylinder head flow. By contrast, the diminutive 4.8L suffers from both the smallest bore and the shortest stroke of the LS family. The minimal displacement might be beneficial for fuel mileage, but power production definitely suffers compared to its larger siblings. Even with the usual bolt-on modifications like cylinder heads, cams, and intakes, the 4.8L will always take a backseat to the larger LS engines unless you apply the great equalizer known as boost. Add boost to a 4.8L, particularly to a modified one, and just watch that power needle swing. This is especially true of a centrifugal supercharger (like our Vortech), where the extra rpm offered by a modified 4.8L means plenty of extra boost. Before adding the positive pressure, we augmented the combination both to help it increase and withstand the extra cylinder pressure. Boost works like a multiplier since a naturally aspirated engine operates under pressure already-- atmospheric pressure, that is (of 14.7 psi at sea level). If we double that pressure by supplying the engine 14.7 psi of boost from a supercharger we can theoretically double the power output.