1821-4075 6.0 - LS2 -6.2 - LS3 - L98 - LQ9 - LS7 - LSA - LSX Chevy LS SX Series -10cc Dish Top LS1,LS2,LS3 and LS7 Forged Piston Set 4.075 inch bore COMP HEIGHT: 1.305"

Load image into Gallery viewer, 1821-4075 6.0 - LS2 -6.2 - LS3 - L98 - LQ9 - LS7 - LSA - LSX Chevy LS SX Series -10cc Dish Top LS1,LS2,LS3 and LS7 Forged Piston Set 4.075 inch bore COMP HEIGHT: 1.305"

PART #: 1821-4075

1821-4075 6.0 - LS2 -6.2 - LS3 - L98 - LQ9 - LS7 - LSA - LSX Chevy LS SX Series -10cc Dish Top LS1,LS2,LS3 and LS7 Forged Piston Set 4.075 inch bore Pin Dia.: 0.927" Comp Height: 1.305"

Name: 1821-4075 6.0 - LS2 -6.2 - LS3 - L98 - LQ9 - LS7 - LSA - LSX Chevy LS SX Series -10cc Dish Top LS1,LS2,LS3 and LS7 Forged Piston Set 4.075 inch bore Pin Dia.: 0.927" Comp Height: 1.305"
Brand: DSS RACING
SKU: 1821-4075
Price: 559.95 USD
Availability: InStock

$559.95

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Forged Pistons Made in the USA!

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378 Chevy LS, SX, Comp Height: 1.305, -10cc Dish Top, PIN: .927", Full Floating or Press Fit, Ring Groove: 1.5/1.5/3MM, Stroke: 3.622", ROD: 6.125, Approx Comp Ratio: 64cc-10.380, 66cc-10.16, 72cc-9.54

Piston Specs
Piston Comparison Chart

Engine Brand: Chevy

Engine Family: Chevy LS

Engine Size: 6.0 - LS2 -6.2 - LS3 - L98 - LQ9 - LS7 - LSA - LSX

With/Without Rings: Without Rings

Cylinder Bore Size: 4.075 in , 103.424 mm

Ring Width: 1.5/1.5/3MM

Compression Height: 1.305"

Pin Diameter: 0.927"

Connecting Rod Length: 6.125"

Crankshaft Stroke: 3.622"

Piston Series: SX 4032 Alloy

Alloy: 4032 Alloy

Cylinder Head: LS1,LS2,LS3 and LS7

TDC Assembly Height: 9.241"

Piston Top Aprox. Comp. Ratio:

-10cc Dish Top LS1,LS2,LS3 and LS7
Chamber	Comp Ratio
64	10.38 to 1
66	10.16 to 1
72	9.54 to 1

Download Piston Instructions

Features:	Piston Series
Features:	Piston Series
	E series	SX series	1-FX series	2-FX series	3-FX series
Broached pin oiling slots	x	x
Drilled, forced wrist pin oiling		x	x	x	x
Forged drain-back windows	x
Drilled bottom ring land intersecting oil groove drain-backs		x	x	x	x
Slightly larger, deeper valve reliefs than OEM	x
CNC machined valve reliefs for moderate performance heads and cam combinations		x
Larger, deeper CNC valve reliefs for more aggressive cylinder head and cam combinations			x	x	x
Premium Aircraft spec. 4032 low expansion alloy	x	x	x
Premium Aircraft spec. 2618 alloy				x	x
Blower, Turbo, NOS ready		x	x	x	x
Brushed piston crown			x	x	x
Turned dishs	x	x
Max Quench milled dishs			x	x	x
Additional CNC milling for weight reduction in non-critical areas			x	x	x
Patented “X Groove” skirt for superior cylinder and ring life			x	x	x
Thinner/shallower Ring grooves for maximum ring seal and land strength			x	x	x
Low volume contact reduction grooves			x	x	x
2nd ring land accumulator groove prevents ring flutter			x	x	x
3rd ring land scraper relief			x	x	x
Oil ring groove relief reservoir			x	x	x
Inner and outer pin boss weight reduction radiusing			x	x	x
Tighter control of crown thickness yields consistently lighter parts			x	x	x
Dynamic skirt milling controls skirt thickness for consistently lighter parts			x	x	x
Diamond-turned high strength skirts	x	x	x	x	x
High-strength piston pins	x	x	x	x	x
Extreme Duty XR wrist pins					x
Horizontal Gas Ports enhance ring seal					x
Forged and machined in the USA	x	x	x	x	x

Piston Specs