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EC 1.5 Ratio Roller Rockers for Vanguard Briggs V-Twins
1500RR EC 1.5 Ratio Roller Rockers for Briggs V-Twins
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EC 1.5 Ratio Roller Rockers for Vanguard Briggs V-Twins

Part Number: 1500RR
Online Price: $399.99
Phone Order Price:$449.99
You Save:$50.00(11%)
Roller Rockers EC 1.5 Ratio for Vanguard Briggs V-Twins
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Description

EC 1.5:1 Roller Rockers for Vanguard Briggs V-Twin Engines


Upgrade your engine with the EC Rollers 1500RR 1.5:1 Ratio Roller Rockers, precision-engineered for Briggs & Stratton Vanguard V-Twin engines, including Models 30, 35, 38, 58, and 61. These are premium performance parts built to handle aggressive cam profiles, higher RPM, and greater valve spring pressures.


Key Features & Benefits ??

  • Increased Rocker Ratio: 1.5:1 (stock is 1.3:1) for faster valve response
  • Robust Roller Design: Needle-bearing roller tips (62?Rc hardness) for long-lasting, low-friction operation
  • High-Strength Construction: Billet aluminum bodies anodized in red for superior durability and corrosion resistance
  • Lightweight Adjusters: Titanium locknuts reduce valvetrain inertia
  • Precision Assembly: Use 0.005” lash setting and oil-soluble assembly lube for optimal lubrication


Recommended Installation Notes

  • Valve Cover Clearance: These rockers extend higher than stock—spacer fabrication for the valve cover may be necessary
  • Stud Fit: If not using a spacer, trim the provided studs for proper fitment
  • Pre-Lube Before Startup: Coat tip bearings in high-quality oil before initial startup—we recommend Maxima Racing Oil Assembly Lube


Installation Checklist:

  • Confirm Valve Spring Installed Height
  • Check for Coil Bind at Max Lift
  • Inspect Retainer-to-Guide and Piston-to-Valve Clearance
  • Degree your Camshaft
  • Set proper Rocker Arm Geometry
  • Measure pushrod length after geometry is locked

These roller rockers require professional installation and clearance verification. An incorrect setup can cause severe engine damage. Returns are not accepted after installation.


Compatibility

Engineered for Briggs Vanguard Models 30, 35, 38, 58, and 61. Ideal for racing or high-lift cam builds that need greater precision, stronger valve control, and more robust valvetrain components.

FAQ

Will these fit my Briggs Vanguard engine?

Yes. These 1.5:1 roller rockers are specifically designed to fit Briggs Vanguard V-Twin engines: Models 30, 35, 38, 58, and 61. Verify your engine model before ordering.


What is the benefit of 1.5 ratio vs. stock 1.3?

The increased rocker ratio opens the valves further and faster, improving airflow and increasing engine performance—especially useful with performance cams and ported heads.


Do I need a valve cover spacer?

In most builds, yes. These rockers are taller than stock and typically require a custom valve cover spacer to avoid interference with the cover.


Do I need to modify anything else?

You may need to:

  • Trim valve cover studs (if no spacer is used)
  • Verify valve spring clearance and coil bind
  • Check piston-to-valve clearance
  • Set up correct rocker arm geometry and pushrod length

These are not bolt-on parts. They are intended for experienced engine builders or shops with the tools to measure and verify critical clearances.


What pushrods should I use?

Pushrod length must be measured after setting rocker geometry. We recommend using adjustable pushrod tools to determine the correct length before cutting custom chromoly pushrods.


Can I run these with stock springs?

Not recommended. These rockers are made for engines running higher lift cams and increased spring pressure. Use valve springs compatible with your cam and rocker combo, and always verify coil bind and installed height.


Do these work on OHV or flathead engines?

No. These are made for OHV Briggs Vanguard V-Twin engines only. They are not compatible with flathead or single-cylinder models.

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