Load image into Gallery viewer, 8155-4165  420 Small Block Chevy SX Series -21cc Dish Top  Forged Piston Set. 4.165 bore
Load image into Gallery viewer, 8155-4165  420 Small Block Chevy SX Series -21cc Dish Top  Forged Piston Set. 4.165 bore
Load image into Gallery viewer, 8155-4165  420 Small Block Chevy SX Series -21cc Dish Top  Forged Piston Set. 4.165 bore

SKU: 8155-4165

8155-4165 420 Small Block Chevy SX Series -21cc Dish Top Forged Piston Set. 4.165 bore

Regular price $539.95
Sale price $539.95 Regular price
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Made in the USA

Made in the USA

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This is a pre order item. We will ship it when it comes in stock.

420 Small Block Chevy SX Series Pistons 4032 Alloy Comp Hgt: 1.062" -21cc Dish Top Pin: .927 Ring Grooves: 1/16-1/16-3/16" Stroke: 3.875" Rod: 6.000" Aprox Comp Ratio: 58cc-10.83, 64cc-10.20, 70cc-9.65

Engine Brand: Chevy

Engine Family: Small Block Chevy

Engine Size: 420

With/Without Rings: Without Rings

Cylinder Bore Size: 4.165 in - 105.71 mm

Ring Width: 1/16-1/16-3/16"

Compression Height: 1.062"

Pin Diameter: .927

Connecting Rod Length: 6.000"

Crankshaft Stroke: 3.875"

Piston Series: SX Series

Alloy: Forged 4032

Cylinder Head: SBC 23 Degree

TDC Assembly Height: 9.000

Piston Top Aprox. Comp. Ratio:

-21cc Dish Top
ChamberComp. Ratio
58cc10.83 to 1
64cc10.20 to 1
70cc9.65 to 1

Download Piston Instructions

Piston Specs

Engine Brand: Chevy

Engine Family: Small Block Chevy

Engine Size: 420

With/Without Rings: Without Rings

Cylinder Bore Size: 4.165 in - 105.71 mm

Ring Width: 1/16-1/16-3/16"

Compression Height: 1.062"

Pin Diameter: .927

Connecting Rod Length: 6.000"

Crankshaft Stroke: 3.875"

Piston Series: SX Series

Alloy: Forged 4032

Cylinder Head: SBC 23 Degree

TDC Assembly Height: 9.000

Piston Top Aprox. Comp. Ratio:

-21cc Dish Top
ChamberComp. Ratio
58cc10.83 to 1
64cc10.20 to 1
70cc9.65 to 1

Download Piston Instructions