Harland Sharp Oldsmobile V8 260-455 7/16" Heavy Duty Stud Mount Roller Rocker Arms, 1.6 Ratio, Aluminum

Harland Sharp Oldsmobile V8 260-455 7/16" Heavy Duty Stud Mount Roller Rocker Arms, 1.6 Ratio, Aluminum Notes: Rockers require you to machine cylinder head for guide plates and Drill and tap for 7/16 rocker studs. The pushrod holes will also need to be drilled out to 5/16.
Specs:
Rocker Arm Mounting Style: Stud
Self-Aligning: No
Rocker Arm Ratio: 1.6
Stud Size: 7/16 in.
Maximum Spring Diameter (in.): 1.600 in.
Rocker Arm Style: Full roller
Shims Included: No
Rocker Arm Material: Aluminum
Rocker Arm Body Style: Standard
Rocker Arm Fasteners Included: Yes
Rocker Arm Nut Style: Polylock
Slot Width (in.): 0.625 in.
Rocker Arm Finish: Orange anodized
Quantity: Set of 16.
Notes: Rockers require you to machine cylinder head for guideplates and drill and tap for 7/16 in. rocker studs. The pushrod holes will also need to be drilled out to 9/16 in.. Fits:
1964 to 1990 260-455 Oldsmobile V8