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Old Feb 17, 2014 | 10:48 PM
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Default 1987 chevy

What kind of mpg will a 87 chevy 305 get in town? 383 gears, stock manifold, and it is throttle body injection, headers, and manga flow dual exhaust, thanks
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Old Feb 17, 2014 | 11:58 PM
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I'd say about 11-12 mpg. Relieving the back pressure on the exhaust is great for top end, but, it takes it toll.
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