Diamond 30440-R1 Ford 5.4L Competition Series Piston / Ring Kit -20.0cc Dish, 3.562" Bore

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SKU: DIA-30440-R1

Pricing: $917.97

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Description

Part Number	30440-R1
Application	Ford Modular 5.4L
Bore	3.562"
Stroke	4.165"
Rod Length	6.657"
Compression Height	1.330"
Piston Volume	-20.0cc
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	09403562
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