Re: 5.3 vs LS1?
Also, nobody hit on the fact that you mentioned this is for a pickup and you want decent gas mileage. Redline horsepower wasn't in your intial description, which is why I say you should go with a hybrid LS1/5.3L. Get the LS1 from your friend on trade, and put a truck intake and accessories on it. The truck intake will get you gobs of torque, which seems to be something you want.
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