Seller notes

DNA Aluminum Roller Rocker Arm SetSmall Block Ford 289, 302, 351 Windsor3/8" StudRatio: 1.6Black Anodized Finish 16/pkg DNA Roller Rocker Arms are made from aircraft-quality, heat-treated aluminum and are the toughest and most innovative rockers that Speedmaster offers. DNA Stud-Mount Rockers are designed to withstand up to 360-lb valve spring loads, and the extruded body has over 60,000 PSI of tensile strength. Studs and Guide Plates are required (sold separately). Speedmaster 1-261-006 DNA Alu...

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