Are all 5.3s the same?
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Are all 5.3s the same? So I'm looking for a 5.3 for my 1958 gmc fleetside. I've been looking at 2001-2006 5.3l motors and tranny I found a 2002 with 79k miles and a 2004 with 85k miles $200 difference. Is a 2004 any better (performance) better then a 2002? Have in mind motor will go in mostly stock in truck. Nothing crazy. Any help is appreciated 
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This doesn't sound like a big deal but, let's just say they both were taken care of, would the 2002 be a better fit for my application since it's pretty much staying stuck with dbw?
Long block is Basically the same. If you want the DBC stuff and it's all intact then get the 02 the only difference is going to be throttle body and fuel rails are a return style on the 02 Vs. the 04 being returnless. If your getting the wire harness and computer then get the 02. It will already be set up for it.
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Long block is Basically the same. If you want the DBC stuff and it's all intact then get the 02 the only difference is going to be throttle body and fuel rails are a return style on the 02 Vs. the 04 being returnless. If your getting the wire harness and computer then get the 02. It will already be set up for it.
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There are a few different 5.3s. Gen 3 and then Gen 4. Aluminum or Iron blocks in either generation. Some have better heads than others, some have more compression. There is as much of a variety between the 5.3s as any of the other displacement LS engines.
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