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Ultra Pro Magnum Rocker Arm Set w/ 1.7 Ratio for Ford 3.8L V6 w/ 3/8" Stud; These Ultra Pro Magnum rockers are made of black oxide coated 8650 chromemoly steel that can withstand up to 850 lbs of spring pressure. Featuring a 1.7 ratio, these rockers fit Ford 3.8L V6 with a 3/8" diameter stud.

Ultra ARC Rocker w/ 1.72 Ratio for Ford 289-351W w/ 7/16" Stud; Constructed in the USA after FEA analysis, the Ultra ARC rocker withstands up to 700 lbs pressure while improving power and stability. This 19049 rocker features a 1.72 ratio for use with 7/16" stud Ford 289, 302 and 351 Windsor.

Replacement Pedestal for 19028 and 19029 GM LS3/L92 Non-Adjustable Rocker; This pedestal replaces the pedestal that comes with our 19028/19029 Ultra-Aluminum ARC rockers for GM LS3/L92.

Ultra ARC Rocker Set w/ 1.72 Ratio for Ford 289-351W w/ 7/16" Stud; Constructed in the USA after FEA analysis, the Ultra ARC rocker withstands up to 700 lbs pressure while improving power and stability. These 19049 rockers feature a 1.72 ratio for use with 7/16" stud Ford 289, 302 and 351 Windsor.

Replacement Pedestal for 19024 and 19025 GM LS1/LS2/LS6 Non-Adjustable Rocker; This pedestal replaces the pedestal that comes with our 19024/19025 Ultra-Aluminum ARC rockers for GM LS1/2/6.

Performance Lash Adjuster for '92-'11 Ford 4.6/5.4 2/4 Valve; Designed to reduce excessive leak down at high RPM in Ford 2/4V Modular engines, these performance lash adjusters ensure valvetrain stability with greatly improved durability.

Ultra Pro Magnum Rocker Arm w/ 1.7 Ratio for Chevrolet 396-454 w/ 7/16" Stud; This Ultra Pro Magnum rocker is made of black oxide coated 8650 chromemoly steel that can withstand up to 850 lbs of spring pressure. Featuring a 1.7 ratio, this rocker fits Chevrolet 396-454 with a 7/16" diameter stud.

Ultra ARC Rocker w/ 1.6 Ratio for '77-'92 Ford 289-351W w/ 5/16" Stud; Constructed in the USA after FEA analysis, the Ultra ARC rocker withstands up to 700 lbs pressure while improving power and stability. This 19052 rocker features a 1.6 ratio for use with 5/16" '77-'92 Ford 289 and 351 Windsor.

Performance Lash Adjuster Set for '92-'11 Ford 4.6/5.4 2 Valve; Designed to reduce excessive leak down at high RPM in Ford 4.6/5.4L 2V Modular engines, these performance lash adjusters ensure valvetrain stability with greatly improved durability.

Ultra Pro Magnum Rocker Arm Set of 12 w/ 1.7 Ratio Chevrolet 396-454 7/16" Stud; 7/16" Stud, 1.7 Ratio

Ultra ARC Rocker Set w/ 1.6 Ratio for '77-'92 Ford 289-351W w/ 5/16" Stud; Constructed in the USA after FEA analysis, the Ultra ARC rocker withstands up to 700 lbs pressure while improving power and stability. These 19052 rockers feature a 1.6 ratio for use with 5/16" '77-'92 Ford 289 and 351 Windsor.

Performance Lash Adjuster Set for '92-'11 Ford 4.6 4 Valve; Designed to reduce excessive leak down at high RPM in Ford 4.6L 4V Modular engines, these performance lash adjusters ensure valvetrain stability with greatly improved durability.