AFR Standard Rocker Arm Stud Girdle - Gold Anodized - AFR Eliminator Heads - Small Block Chevy - Pair RS00400111 42 x 24 in

42 x 24 in

1957-1959 Ford Ranchero

155 in Bearing Bore

No Alterations

2011-2011 Infiniti M37

AFR Standard Rocker Arm Stud Girdle - Gold Anodized - AFR Eliminator Heads - Small Block Chevy - Pair RS00400111 42 x 24 inAFR Stud Girdles are designed to eliminate rocker stud flexing and the associated horsepower loss of today's high lift cams and high pressure valve springs. Available for small block Chevy and Ford and big block Chevy applications, Airflow Research Stud Girdles will maintain valvetrain longevity throughout an engine's entire RPM range. For over thirty years Airflow Research has been defining technological leadership in cylinder head manufacturing and