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The Magnacharger OptionSince this is our supercharger issue, we took special note of the blown mill in Chris Downie's '02 Silverado. Starting with the stock 5.3L Gen III engine, Chris added a 10-psi intercooled Magnacharger blower kit, stuffed in a .580-lift COMP roller cam with 220 degrees duration (at .050), then plumbed it with a 100hp shot of nitrous from NOS. A Snow Performance Boost Cooler runs straight methanol into the air intake under boost, and, voila!-it runs 12.0 at 114 mph. Exhaust from the otherwise stock engine exits via a set of Arizona Speed & Marine headers and a custom 2.5-inch dual exhaust. On the drivetrain side, the Silverado leans hard on a Yank 3,000-stall converter. Chris operates Jim Taylor Automotive, an auto repair center in Sarasota, Florida, so if you live in the area and you share the same jones for high-tech boost, look him up. View Related Article
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