Re: C10 Build - what's the latest/greatest swap for best mileage?
The 4.8 and 5.3 are actually the same bore size. 5.3 just has a different stroke. I had a 4.8 and a 5.3 milage wise 4.8 will be better. But stock power 5.3 had like 50 more hp. But if your looking for fun the 4.8 holds boost better. Supercharger, pro charger, turbos, they are cheap enough to put down a lost of fun.
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