1-6020-4040C-400-Small Block Oldsmobile FX1 Series -12cc Flat Top Oldsmobile-Forged-Piston-Set- 4.04 inch bore
1-6020-4040C-400-Small Block Oldsmobile FX1 Series -12cc Flat Top Oldsmobile-Forged-Piston-Set- 4.04 inch bore
1-6020-4040C-400-Small Block Oldsmobile FX1 Series -12cc Flat Top Oldsmobile-Forged-Piston-Set- 4.04 inch bore
1-6020-4040C-400-Small Block Oldsmobile FX1 Series -12cc Flat Top Oldsmobile-Forged-Piston-Set- 4.04 inch bore
Load image into Gallery viewer, 1-6020-4040C-400-Small Block Oldsmobile FX1 Series -12cc Flat Top Oldsmobile-Forged-Piston-Set- 4.04 inch bore
Load image into Gallery viewer, 1-6020-4040C-400-Small Block Oldsmobile FX1 Series -12cc Flat Top Oldsmobile-Forged-Piston-Set- 4.04 inch bore
Load image into Gallery viewer, 1-6020-4040C-400-Small Block Oldsmobile FX1 Series -12cc Flat Top Oldsmobile-Forged-Piston-Set- 4.04 inch bore
Load image into Gallery viewer, 1-6020-4040C-400-Small Block Oldsmobile FX1 Series -12cc Flat Top Oldsmobile-Forged-Piston-Set- 4.04 inch bore

SKU: 1-6020-4040C

1-6020-4040C-400-Small Block Oldsmobile FX1 Series -12cc Flat Top Oldsmobile-Forged-Piston-Set- 4.04 inch bore

$669.95
$669.95
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Ships in 1 - 8 days

Ships in 1 - 8 days

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.

400 Small Block Oldsmobile FX Comp Height: 1.625 -12cc Flat Top PIN: .980 Ring Groove: 1/16-1/16-3/16" Stroke: 3.975 ROD: 7 Forged and Machined in Saint Charles Illinois USA! Boost and NOS Ready! (Moderate to High Levels) Comp Ratio: 64cc-10.90, 68cc-10.45, 70cc-10.25


Engine Brand: Oldsmobile

Engine Family: Small Block Oldsmobile

Engine Size: 400

With/Without Rings: Without Rings

Cylinder Bore Size: 4.040 in - 102.54 mm

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

Compression Height: 1.625

Pin Diameter: .980

Connecting Rod Length: 7.000 in

Crankshaft Stroke: 3.975 in

Piston Series: 1 - FX Series

Alloy: Forged 4032

Cylinder Head: Oldsmobile

TDC Assembly Height: 10.6125

Piston Top Aprox. Comp. Ratio:

-12cc Flat Top Oldsmobile
ChamberComp Ratio
64cc10.9 to 1
68cc10.45 to 1
70cc10.25 to 1

Download Piston Instructions

Piston Specs

Engine Brand: Oldsmobile

Engine Family: Small Block Oldsmobile

Engine Size: 400

With/Without Rings: Without Rings

Cylinder Bore Size: 4.040 in - 102.54 mm

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

Compression Height: 1.625

Pin Diameter: .980

Connecting Rod Length: 7.000 in

Crankshaft Stroke: 3.975 in

Piston Series: 1 - FX Series

Alloy: Forged 4032

Cylinder Head: Oldsmobile

TDC Assembly Height: 10.6125

Piston Top Aprox. Comp. Ratio:

-12cc Flat Top Oldsmobile
ChamberComp Ratio
64cc10.9 to 1
68cc10.45 to 1
70cc10.25 to 1

Download Piston Instructions

Engine Power TV

The DSS FX, X-Groove Feature