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Tag Archives: 3.900″ Bore

RHS Pro Elite™ 3.900″ Bore LS7 CNC-Ported Cylinder Heads

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Memphis, TN – Racing Head Service is now offering LS7-style heads for original LS cathedral port engines. RHS Pro Elite™ 3.900″ Bore LS7 CNC-Ported Cylinder Heads not only get the best LS rectangular port heads onto all GM LS 5.7L – 6.0L blocks, they also provide up to 100 bolt-on horsepower over stock and feature all the benefits of other RHS  LS7 ... Read More »