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$10.49
Press-In Rocker Arm Stud Pinning Kit
Press-In Rocker Arm Stud Pinning Kit

Press-In Rocker Arm Stud Pinning Kit

Universal Fit

10 Reviews | 2 Answered Questions
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Lincoln, NE -
Phoenix, AZ -
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Press-In Rocker Arm Stud Pinning Kit
Press-In Rocker Arm Stud Pinning Kit
Press-In Rocker Arm Stud Pinning Kit
Press-In Rocker Arm Stud Pinning Kit
Press-In Rocker Arm Stud Pinning Kit
Press-In Rocker Arm Stud Pinning Kit
Press-In Rocker Arm Stud Pinning Kit
Press-In Rocker Arm Stud Pinning Kit
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Press-In Rocker Arm Stud Pinning Kit
Press-In Rocker Arm Stud Pinning Kit
Press-In Rocker Arm Stud Pinning Kit
Press-In Rocker Arm Stud Pinning Kit
Press-In Rocker Arm Stud Pinning Kit
Press-In Rocker Arm Stud Pinning Kit
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Part # 550806
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  • Prevents studs from loosening
  • For all engines using pressed-in rocker arm studs
  • Not for hollow studs
  • 16 roll pins, one special 5/32" drill bit

Details

MFG. Part #:
550806

Info

Add positive retention to your rocker arms with this complete stud pinning kit. Rocker stud pins are cheap insurance for race engines that require stock cylinder heads, or for mild street engines built on a budget.

Most factory cylinder heads utlilize press-fit rocker arm studs, which can pull out under certain conditions. Stiffer valve springs, high-lift camshafts, high engine RPM, and engine overheating all contribute to stud failure. These roll pins lock each stud in place, preventing them from rotating or loosening.

Works with all engines using pressed-in rocker arm studs. Note: Not for engines that use hollow studs, such as early Pontiac V8s, that have through-stud oiling for the rocker arms.

  • Keeps press-in rocker arm studs from pulling out
  • Easy upgrade for stock heads
  • Cheap insurance when using stiffer springs or high lift cams
  • Effective upgrade that's been used by racers for decades
  • Can be installed without removing heads from engine
  • Includes (16) roll pins and (1) 5/32" drill bit

Notes

How to pin rocker arm studs:

  1. Check that all rocker arm studs are equal in height. Any studs that have pulled out should be pressed back in to factory spec.
  2. Mark stud bosses 9/16" down from the top of the boss using a center punch. You'll want to drill right through the center of each boss.
  3. Mark your drill bit depth using the roll pin length as a guide.
  4. Using supplied 5/32" drill bit, carefully drill all the way through the center of each boss, perpendicular to the stud.
  5. Install roll pins by tapping with a hammer until pin is flush with the O.D. of the boss (valve side).

Important Messages

  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
Some parts are not legal for use in California or other states with similar laws/regulations

Reviews

Q & A

Videos & Articles
  • What happens when you advance or retard a camshaft? In this tech article, we explain the pros and cons of installing your cam straight up, advancing or retarding.
  • Learn the basics to engine performance like; how does a cam work? What is Valve lift, duration, lobe separation angle, and cam profiles? Afterwords selecting the right camshaft will be less of a guessing game!
  • Rebuilding an engine? Stay organized by using a valvetrain rocker arm organizer tray while disassembling the valvetrain components. Learn some tips on why you shouldn't mix up lifters if you intend on using them again.
  • Learn how to re-build a junkyard Small Block Chevy. A step-by-step guide on how to select a SBC, machine the valve guide bosses down, and what parts to use to upgrade to your personal liking.

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