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Product Description

Rocker Stud and Guide Plate Kit

3/8" Rocker Studs / Guide Plate Kit

 Small Block Chevy with 5/16" Pushrod's


Our screw in stud and guide plate kit offers discriminating buyers added value.

Builders can save a few bucks by purchasing these two parts in kit form.

This package includes sixteen 3/8" Rocker Studs & eight flat style guide plates to suit SBC running common 5/16” diameter pushrods.



  • SB Chevrolet heads machined to accept screw in studs and guide plates
  • * Heads w/ pressed in studs require machine work before installation


     Stud Specs:

  • 2.480" Overall Length
  • .950" Upper Thread Length
  • 1.750" Effective Length
  • .685" Base Thread Length
  • Hex Size- 5/8"
  • 7/16" NC bottom threads
  • 3/8" NF top threads

     Guide Plates:

  • Flat Style
  • Hardened Steel
  • Use w/ 5/16" Pushrods
  • For std valve spacing applications
  • Fits most GM/Chevy V8 Castings & many aftermarket heads

Not for aftermarket heads with unique valve spacing.

Example- will not fit some AFR heads due to altered valve centerline locations.

*NOTE: Many OE SBC heads use pressed in studs. Heads with pressed in studs require machine work.

Factory heads w/ screw in studs which normally used self aligning rockers (LT1, etc) should know adding guide plates will raise the stud height by the thickness of the guide plate.  Possible fitment issues are: The need for taller valve covers, pushrods and the possibility of a fitment issue with the poly lock. (rocker adjuster nut)

Do not install crimp style adjuster nuts without appropriate lubrication.

Need help? Use our message link.

Alex's Parts, the smart choice in valve train parts!


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