If you have ever installed a rocker stud into a cylinder head and watched it wobble as it screwed in, you knew from the beginning that the rocker geometry was going to be inconsistent all over the place. ARP rocker studs are concentric within .005 T.I.R. thread pitch to thread pitch. They run-in straight and true. Lengths are exact, designed to provide positive seating every time. An extralarge radius base offers greater resistance to flex. Available in both High Performance and Pro Series models.
NOTE: Not to be used with OEM-style, self-locking nuts. To be used with ARP's patented Perma-Loc adjusters
- Base Thread Size:
- 7/16-14 in.
- Rocker Arm Nut Thread Size:
- 7/16-20 in.
- Rocker Arm Stud Material:
- 8740 Chromoly
- Guideplate Locator Shank:
- Yes
- Rocker Arm Nut Thread Length (in.):
- 0.700 in.
- Effective Stud Length (in.):
- 2.000 in.
- Base Thread Length (in.):
- 1.300 Exh./0.820 Int.
- Quantity:
- Sold as a set of 16.
- Notes:
- Base thread length is 1.300 in. exhaust, 0.820 in. intake.
- Make:
- Chevrolet
- Engine Family:
- Chevy big block Mark IV
- Engine Sizes:
- 6.5L/396-7.4L/454
- Years:
- 1966-1990
- Engine Family:
- Chevy big block Gen V
- Years:
- 1991-1995
- Engine Family:
- Chevy big block Gen VI
- Years:
- 1996-2000
- Engine Sizes:
- 7.4L/454
- Cylinder Head Style (application):
- Dart 320/360
- Cylinder Head Style (application):
- Dart Iron Eagle
- Cylinder Head Style (application):
- Dart Pro 1
