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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="tRidiot" data-source="post: 3235534" data-attributes="member: 9374"><p>So I have a small leak in the heads, I lose coolant and it is making its way into my oil, slowly but surely, getting worse over time. It's not terrible, but I've known for a while.</p><p></p><p>I've got the Castech 706 heads on mine, lots of you probably know what this means... poor casting meant cracks that led to slow leak of coolant. I've replaced the water pump, replaced the radiator, it's not leaking externally.</p><p></p><p>So anyways... the question is - top-half rebuild, or full replacement? One friend of mine has told me in the strongest possible terms I should do the whole rebuild or replacement and NOT to do a top-half only, as it will surely have something major let go in the bottom half after 3-6 months.</p><p></p><p>The problem is, my mechanic tells me a top-half will run me about $2k with him - for a replacement, I am seeing online prices starting at $2k and going way up from there. For the motor alone.</p><p></p><p>So, car guys, what do you think?</p><p></p><p>Oh, and I will likely need the transmission sometime in the next year or two, too... <sigh>. I'm at 265k miles right now.</p></blockquote><p></p>
[QUOTE="tRidiot, post: 3235534, member: 9374"] So I have a small leak in the heads, I lose coolant and it is making its way into my oil, slowly but surely, getting worse over time. It's not terrible, but I've known for a while. I've got the Castech 706 heads on mine, lots of you probably know what this means... poor casting meant cracks that led to slow leak of coolant. I've replaced the water pump, replaced the radiator, it's not leaking externally. So anyways... the question is - top-half rebuild, or full replacement? One friend of mine has told me in the strongest possible terms I should do the whole rebuild or replacement and NOT to do a top-half only, as it will surely have something major let go in the bottom half after 3-6 months. The problem is, my mechanic tells me a top-half will run me about $2k with him - for a replacement, I am seeing online prices starting at $2k and going way up from there. For the motor alone. So, car guys, what do you think? Oh, and I will likely need the transmission sometime in the next year or two, too... <sigh>. I'm at 265k miles right now. [/QUOTE]
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Car guys - should I do a top-half rebuild on my GM 5.3L?
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