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Diamond 30400-R1 Ford 4.6L 2V Competition Series Piston / Ring Kit -1.5cc Flat Top, 3.552" Bore

12.2:1 Compression Ratio
Pricing: $883.99

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Part Number  30400-R1
Application Ford Modular 4.6L 2V PI 
Bore  3.552" 
Stroke  3.543" 
Rod Length  5.933" 
Compression Height  1.220"
Piston Volume -1.5cc
Valve Reliefs  2V PI Valve Reliefs - Will fit Oversize Valves 
Valve Relief Depths  .151" Intake / .050" Exhaust 
Compression Ratio - 42cc  12.2:1 Compression using 3.620" x .036" Gasket 
Ring Land Spacing  .280" x .180" x .080" 
Included Wrist Pin Trend G8662500180C
Wrist Pin Material  8620 Alloy  
Wrist Pin Dimension  .866" x 2.500" x .180" Wall - 123g 
Optional Wrist Pin Upgrade Trend H8662500200C
Optional Wrist Pin Material  H-13 Tool Steel 
Optional Wrist Pin Dimesions .866" x 2.500" x .200" Wall - 132g
Ring Stack  1.2mm x 1.5mm x 3mm 
Included Piston Ring Set  09403552
Included Piston Ring Details  Gas Nitrided Steel Top, Napier 2nd, 3 Piece Oil  

The Diamond 4.6L Competition Series Pistons are designed for moderate to high horsepower forced induction applications and are a great choice for Street / Strip applications up to 1400 HP. These Pistons come with Trend .180" Wall 8620 Wrist Pins, Moly Skirt Coating and a Steel Top, Napier 2nd Ring set. We recommend upgrading to the H-13 Pins around the 900 HP mark. The 8260 Pins will not break, but they will begin to flex at some point and are not as rigid as the H-13 heavier wall pins. We recommend this for the simple fact that wrist pin flex will wear out both the Pin Bore and the Connecting Rod Bushing. 

Optional Upgrades:

  • H-13 Tool Steel Pins 
  • Ceramic Dome Coating 





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  • Item Requires Shipping
  • 16.0 lbs.
  • W28.0000” x H6.0000” x L12.0000”
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