![]() Increases crankshaft power form 340 hp to 500 hp (5 psi) or 560 hp (7 psi**) Lapis Lazuli Gemstone 925 Sterling Silver Pendant 11.9 gm Silver Pendant Jewelry. The low compression of the 7.4 MPI makes it an excellent candidate for modern supercharging technology, producing large percentage power gains with relatively low boost levels. Many of them can achieve 80 000 miles of usage … flats for sale ramsey isle of man ProCharger Marine Intercooled Kit for 1998-2001 Mercruiser 7.4 MPI. It will work with normally aspirated applications (top left).The material iridium is considered the best material to manufacture spark plugs. The Pro Series features knife-edge counterweights making it a perfect crank for increased RPM and power.” Tom Lieb, of SCAT Crankshafts recommended its Excalibur 4340 lightweight 4-inch crankshaft. ![]() These engines are incredibly sturdy as long as they are taken care of.If power adders are used, a SCAT 4340 Pro Series crankshaft is recommended. ![]() ![]() There are countless examples that have reached well beyond 250,000 miles that are still humming today. The 7.4 Vortec is an incredibly reliable engine that is capable of lasting a very long time with proper maintenance and care. ![]()
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