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Old 01-25-2013, 03:15 AM   #4
softballnrd27
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Join Date: Jun 2007
Location: Harker Heights, TX
Posts: 1,599
Re: 04 5.3L What is it worth

What is the big price difference? I would keep the 5.3 and swap it in. Mounts are cheap, modding your own harness is cheap and easy to do just time consuming. You can use your current trans and you can buy the flat flexplate and spacer for cheap. If you want to make it even easier to swap you can replace the DBW with a DBC throttle body and go that route. The most expensive, but can be done for fairly cheap, is the fuel system. That is just my take on it. Even the stock 5.3 will have way more power than a freshened up stock 350 and get close to 20mpg.
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2010 Silverado Crew Cab
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