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Would dual exhausts come with a 4 barrell than?
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Dual exhaust was standard on SS & Z28 (& COPO 9560/9561). Base V8 motors (327ci & 307ci both w/2bbl) and optional V8 motors LM1 (350ci/255hp w/4bbl) and L65 (350ci/250hp w/2bbl) came standard with single exhaust.
