Boss 351 Engine Buildup Stainless Steel Valves
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L&R Machine treated the 4V heads to a factory-style valve job and installed a set of Pro Comp stainless steel valves. The 2.19/1.71 valve combo supplied by Pro Comp featured single-groove retainers, while Comp Cams came through with a set of 977 valvesprings that allowed us to safely rev the Boss 351 to 7,000 rpm. View Related Article
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