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Ultra ARC Rocker w/ 1.65 Ratio for Pontiac 265-455 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 19061 rocker features a 1.65 ratio for use with 7/16" stud Pontiac 265-455.

Ultra Pro Magnum 1.5 Ratio Shaft Mount Rocker Arm for Chrysler 273-360; This 1.5 ratio Ultra Pro Magnum rocker arm replaces the rocker arms that come with our 1622-16 Ultra Pro Magnum Shaft-Mount Rocker system for Chrysler 273-360.

Ultra ARC Rocker Set w/ 1.65 Ratio for Pontiac 265-455 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 19061 rockers feature a 1.65 ratio for use with 7/16" stud Pontiac 265-455.

Ultra Pro Magnum 1.5 Ratio Shaft Mount Rocker Arm Kit for Chrysler 273-360; Complete with bolts, shafts and spacers, this 1.5 Ultra Pro Magnum shaft-mount rocker system for Chrysler 273-360 is made from 8620 chromemoly, handles higher spring rates, a unique oil system and an adjuster that allows ball pushrods.

Replacement Spacer for 1621/1622 Chrysler 273-360, 383-440 Shaft Mount Rocker; This spacer replaces the rocker spacers that come with both our 1622 and 1621 Chrysler Ultra Pro Magnum Shaft Mount Rocker System.

Ultra Pro Magnum Rocker Arm w/ 1.7 Ratio for Chevrolet 396-454 w/ 1/2" 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 1/2" diameter stud.

Ultra Pro Magnum Rocker Arm Set w/ 1.7 Ratio for Chevrolet 396-454 w/ 1/2" 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 Chevrolet 396-454 with a 1/2" diameter stud.

Ultra Pro Magnum Rocker Arm w/ 1.7 Ratio for Chevrolet 348-409 w/ 3/8" 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 348-409 with a 3/8" diameter stud.

Adjusting Nut for GM LS1/LS6/LS3 Ultra Pro Magnum Adjustable Rocker; This adjusting nut replaces the adjusting nut that comes with our adjustable Ultra Pro Magnum rocker arms for GM LS1/LS2/LS6 and LS3.

Ultra Pro Magnum Rocker Arm Set of 12 w/ 1.7 Ratio Chevrolet 348-409 3/8" Stud

Adjusting Nut Set for GM LS1/LS6/LS3 Ultra Pro Magnum Adjustable Rocker; These adjusting nuts replace the adjusting nuts that come with our adjustable Ultra Pro Magnum rocker arms for GM LS1/LS2/LS6 and LS3.

Ultra Pro Magnum Rocker Arm Set w/ 1.7 Ratio for Chevrolet 348-409 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 Chevrolet 348-409 with a 3/8" diameter stud.