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Gas Mileage?
Hello all. I have a 99 Tahoe 4dr, 155k on it, newly built heads, new tune up, and valve cover, new temp sensors, oil pan and intake manifold gaskets. My brother had the exact same truck but with about 80,000 miles on it and he was getting 15+ MPG. I get 10-14, sometimes even on the highway...- babypumpkinhead
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- Replies: 10
- Forum: Performance
