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Re: 5.3L superchargers
If you keep the tune up safe, the 5.3 can handle plenty of boost and make really good power. There's a couple local guys around here that have junkyard 5.3's with cheap turbos making a ton of power for little cash. One is a 1st gen RX7 and the other a 3rd gen firebird, both are running 9 sec 1/4 mile times at 140+mph. The best part is if you hurt it, a replacement long block is ~$350 and you're back in business. 
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'85 Silverado swb: 383 stroker, 10.5:1, vortec heads, 232/238 roller cam, RPM air gap, performer 750 carb, stainless longtubes, 3" duals/super 44's, T56/4.11 383ci build / exterior refresh thread
'98 Camaro z28: 370ci twin turbo 370ci build
'01 Tahoe LT 4x4: 5.3, longtubes/ory, magnaflow duals, custom tune....wife's DD
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