155 Hemi 7 Z
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Hooker 2-1/8-inch primary headers were used for our baseline runs. Thissize proved to work well for the 426 displacement Hemi, even in a high-output configuration. After a half day of tuning and tweaking, wecranked a full 494 hp and 499 lb-ft of torque from this combination--notbad at all. View Related Article
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