Diamond 30439-R1 Ford 5.4L Competition Series Piston / Ring Kit -20.0cc Dish, 3.552" Bore
|Application||Ford Modular 5.4L|
|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 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.
- H-13 Tool Steel Pins
- Lateral Gas Ports
- Ceramic Dome Coating
Compression Ratios Calculated with a 3.620" x .036" Head Gasket and .010" Deck Clearance
|2V TFS 38cc||2V PI 42cc||2V TFS 44cc||3V 51cc||4V 52cc|
|5.4L -20.0cc Dish||11.3:1||10.7:1||10.4:1||9.6:1||9.5:1|
- Item Requires Shipping
- 16.0 lbs.
- W28.0000” x H6.0000” x L12.0000”
- Free Shipping!
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