Ford Gen 1&2 5.0L Coyote V8 Beehive Spring & Titanium Retainer Set. Made from ultra clean Silicon Chrome spring steel with a higher fatigue resistance compared to other spring steels. Heat treating and post processing is the highest quality available. High frequency spring design to reduce spring surge at high operating RPM. 90lb seat pressure at 37.8mm installed height / 254lb at 15mm valve lift / max lift 15.9mm Install seat on top of OEM stem seal.
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