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The Water Cooler
General Discussion
Car guys - should I do a top-half rebuild on my GM 5.3L?
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<blockquote data-quote="Glock 40" data-source="post: 3235816" data-attributes="member: 32"><p>Man I fully understand budgets, we are a single income home. I also recall what my shop teacher in H.S. said. You can pay to do it right the first time or pay to do it right the second time its your choice. I just can't see putting money into an engine with bad heads and 265k on it. I am really surprised its lasted that long. If its had even trace amounts of coolant in the oil for a while it has taken a toll on already old rod and crank bearings. </p><p></p><p>If a gm crate motor isn't in your budget then, I would agree see if you can find a salvage motor and go that route. You should still be able to locate one and have it installed for less than your guy is talking about doing the top end. Just make sure it doesn't have the castech heads on it and you should be good. Those motors are pretty solid and other than the head issue a noisy lifter or two on startup are about the only things you see internal wise. </p><p></p><p>As for mileage all my 00-06 Tahoes did 14.5mpg it didn't matter if it was around town or pulling a boat. The only time they ever went above that was on highway trips and I would have to keep it under 70mph to really see a big jump ie 16-17mpg. Those are great trucks. I really enjoyed them.</p></blockquote><p></p>
[QUOTE="Glock 40, post: 3235816, member: 32"] Man I fully understand budgets, we are a single income home. I also recall what my shop teacher in H.S. said. You can pay to do it right the first time or pay to do it right the second time its your choice. I just can't see putting money into an engine with bad heads and 265k on it. I am really surprised its lasted that long. If its had even trace amounts of coolant in the oil for a while it has taken a toll on already old rod and crank bearings. If a gm crate motor isn't in your budget then, I would agree see if you can find a salvage motor and go that route. You should still be able to locate one and have it installed for less than your guy is talking about doing the top end. Just make sure it doesn't have the castech heads on it and you should be good. Those motors are pretty solid and other than the head issue a noisy lifter or two on startup are about the only things you see internal wise. As for mileage all my 00-06 Tahoes did 14.5mpg it didn't matter if it was around town or pulling a boat. The only time they ever went above that was on highway trips and I would have to keep it under 70mph to really see a big jump ie 16-17mpg. Those are great trucks. I really enjoyed them. [/QUOTE]
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The Water Cooler
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Car guys - should I do a top-half rebuild on my GM 5.3L?
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