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EC Pinnacle 4.470 Connecting Rod for Wildcat 460
EC Pinnacle 4.470 Connecting Rod for Wildcat 460
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EC Pinnacle 4.470 Connecting Rod for Wildcat 460

Part Number: 8272
Online Price: $149.99
EC 4.470" Billet Connecting Rod – Wildcat 460 & Big Block
Availability: Out of Stock.

Description

EC Pinnacle 4.470" Billet Connecting Rod for Wildcat 460cc & Big Block Engines


The EC Pinnacle 4.470” Billet Connecting Rod is specifically engineered for performance in the Wildcat 460cc engine and other big block applications, including the Honda GX390 and Predator 420.


This premium connecting rod is designed to bring the Wildcat 460 flat-top piston to zero-deck height, optimizing compression and combustion efficiency for race or high-performance builds. Compared to a stock big block rod, the 4.470" length is approximately .060" longer, making it essential to verify deck height, crankshaft stroke, and journal sizing before installation.


Key Features:

  • Specifically built for the Wildcat 460 engine
  • Ideal upgrade for Predator 420, Honda GX390, and other big blocks
  • Increases compression by achieving zero deck with flat top pistons
  • Precision-machined from high-strength billet aluminum
  • Lightweight design for improved engine response and reduced rotating mass


Technical Specifications:

  • Rod Length (Center to Center): 4.470"
  • Big End Journal Diameter: 1.421"
  • Small End Journal Diameter (Wrist Pin): 0.789"
  • Rod Weight: 273g
  • Bearing Number: 6391


Compatibility:

  • Wildcat 460cc
  • Predator 420 (verify clearance and deck height)
  • Honda GX390
  • Other 420cc–460cc clone engines using flat top pistons and longer rod combinations

Note: Always measure crankshaft journal diameter and piston deck height for proper fitment. Improper sizing may result in premature wear or mechanical failure.

FAQ

What engines is this 4.470" connecting rod compatible with?

This rod is designed specifically for the Wildcat 460, but it also fits:

  • Predator 420
  • Honda GX390
  • Other big block clones using similar crankshaft and piston setups
    Always measure journal and deck height before installation.


Why use a 4.470" rod instead of the stock rod?

The 4.470" rod is about .060" longer than stock big block rods, which allows flat top pistons to reach zero deck height. This increases compression and improves combustion efficiency, resulting in better throttle response and performance.


What is zero deck height and why does it matter?

Zero deck means the piston sits flush with the top of the cylinder at TDC (Top Dead Center). This optimizes combustion by minimizing quench area, improving fuel burn, and helping prevent detonation.


What bearings does this rod use?

It uses bearing number 6391, a common bearing in high-performance small engine builds. Always verify compatibility with your crank journal diameter before installation.


Can I use this rod with stock pistons and crank?

Not directly. This rod is designed for flat top pistons like those found in the Wildcat 460 and may not match stock piston heights. It’s ideal for performance combinations where the piston, crank, and rod are selected to work together.

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