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Diamond 30438-R1 Ford 5.4L Competition Series Piston / Ring Kit -15.0cc Dish, 3.572" Bore

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Pricing: $917.97

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DIA-30438-R1
  • DIA-30438-R1
  • Description

     

    Part Number  30438-R1
    Application Ford Modular 5.4L 
    Bore  3.572" 
    Stroke  4.165" 
    Rod Length  6.657" 
    Compression Height  1.330"
    Piston Volume -15.0cc
    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  09403572
    Included Piston Ring Details  Gas Nitrided Steel Top, Napier 2nd, 3 Piece Oil  

    The Diamond 5.4L Competition Series Pistons have a 1.330" Compression Height, which brings the Piston Crown right up to the top of the deck, just like the 4.6L. This is the correct way to enhance combustion efficiency as the OEM 5.4L pistons sit .120" down in the cylinder. These Pistons are supplied with Diamond's Moly Skirt Coating, 8620 .180" Wall Wrist Pins and a Steel Top, Napier 2nd Ring Set. We suggest upgrading to the H-13 Tool Steel Wrist Pins around the 900 HP mark. 

    These Pistons do not include valve reliefs but we can have them added for a small fee. Please note Pistons with the valve relief option are made to order, so please allow 2.5-3 weeks before shipping. 

    Optional Upgrades:

    • H-13 Tool Steel Pins 
    • Ceramic Dome Coating