16 Late Model Hemi Gen 3 Giveaway
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15 In the foreground is a factory 5.7 aluminum head casting. Compare its open-chamber contours (arrow) to our project's reworked head behind it, which has had material welded in and machined to increase quench, theoretically increasing chamber combustion efficiency and reducing chances of detonation, thereby permitting a higher compression ratio. This closed-chamber shape is very similar to what the factory is now using on the latest 6.4 Hemi. View Related Article
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