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Blumax S/B Chevy Self-Aligning Roller Rocker Arms, 1.5:1, 3/8 Stud
Blumax S/B Chevy Self-Aligning Roller Rocker Arms, 1.5:1, 3/8 Stud

Blumax S/B Chevy Self-Aligning Roller Rocker Arms, 1.5:1, 3/8 Stud

Chevy Small Block V8

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Blumax S/B Chevy Self-Aligning Roller Rocker Arms, 1.5:1, 3/8 Stud
Blumax S/B Chevy Self-Aligning Roller Rocker Arms, 1.5:1, 3/8 Stud
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Part # 57533519
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MFG. Part #:


BluMax Aluminum Rockers are designed with strength and durability in mind. The rocker bodies feature a deeper relief to accommodate larger valve springs, and are designed with longer slots and specially designed pushrod cups, to take advantage of high lift camshafts and roller lifters without extensive modification.

The BluMax self-aligning, narrow-body aluminum rollers are for use with center bolt valve cover heads. The narrower profile accommodates the later style Chevrolet engines with center bolt valve covers.

  • Self-aligning, no need for push rod plates
  • Designed to give better clearance with center bolt valve covers
  • Ideal for Vortec and other center-bolt heads

Cannot be used on heads that have not had the stock "slotted" pushrod hole drilled out to a round hole.  Cannot be used with guide plates.

Item Details

S/B Chevy - 1.5 Ratio - 3/8" Stud
Self Aligning, Narrow Body


  • CHEVROLET Small Block Gen I 305 (1987-99), 350 (1987-2000)
  • CHEVROLET Small Block Gen II (LT-based engines) 350 (1992-97)



  • Designed to meet the demands of most high-lift roller camshaft profiles
  • Specially machined to accommodate larger valve springs and retainers
  • SAE-52100 Full complement precision needle and cage roller bearings
  • Anodized for a superior finish and to reduce operating temperatures
  • CNC machined pushrod cups and heat-treated Cr40 roller tips
  • Internal oiling system for long lasting performance
  • H.D. Polylocks included


Some parts are not legal for use in California or other states with similar laws/regulations

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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!
  • To get the longest life and most performance out of your engine, it's important to have the valve lash set correctly. Here we show you how to set valve lash on a small block Chevy using a hydraulic lift camshaft.
  • Once you're ready to start selecting valve train components, we have some useful tips and tools that should boost your performance. We discuss proper valve-springs, pushrod length, and rocker arm ratios.

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