3-6020-4185C-400-Small Block Oldsmobile FX3 Series -12cc Flat Top Oldsmobile-Forged-Piston-Set- 4.185 inch bore
3-6020-4185C-400-Small Block Oldsmobile FX3 Series -12cc Flat Top Oldsmobile-Forged-Piston-Set- 4.185 inch bore
3-6020-4185C-400-Small Block Oldsmobile FX3 Series -12cc Flat Top Oldsmobile-Forged-Piston-Set- 4.185 inch bore
3-6020-4185C-400-Small Block Oldsmobile FX3 Series -12cc Flat Top Oldsmobile-Forged-Piston-Set- 4.185 inch bore
Load image into Gallery viewer, 3-6020-4185C-400-Small Block Oldsmobile FX3 Series -12cc Flat Top Oldsmobile-Forged-Piston-Set- 4.185 inch bore
Load image into Gallery viewer, 3-6020-4185C-400-Small Block Oldsmobile FX3 Series -12cc Flat Top Oldsmobile-Forged-Piston-Set- 4.185 inch bore
Load image into Gallery viewer, 3-6020-4185C-400-Small Block Oldsmobile FX3 Series -12cc Flat Top Oldsmobile-Forged-Piston-Set- 4.185 inch bore
Load image into Gallery viewer, 3-6020-4185C-400-Small Block Oldsmobile FX3 Series -12cc Flat Top Oldsmobile-Forged-Piston-Set- 4.185 inch bore

SKU: 3-6020-4185C

3-6020-4185C-400-Small Block Oldsmobile FX3 Series -12cc Flat Top Oldsmobile-Forged-Piston-Set- 4.185 inch bore

$879.95
$879.95
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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 Extreme Levels) Comp Ratio: 64cc-11.53, 68cc-11.06, 70cc-10.84


Engine Brand: Oldsmobile

Engine Family: Small Block Oldsmobile

Engine Size: 400

With/Without Rings: Without Rings

Cylinder Bore Size: 4.185 in - 106.22 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: 3 - FX Series

Alloy: Forged 2619

Cylinder Head: Oldsmobile

TDC Assembly Height: 10.6125

Piston Top Aprox. Comp. Ratio:

-12cc Flat Top Oldsmobile
ChamberComp Ratio
64cc11.53 to 1
68cc11.06 to 1
70cc10.84 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: 4.185 in - 106.22 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: 3 - FX Series

Alloy: Forged 2619

Cylinder Head: Oldsmobile

TDC Assembly Height: 10.6125

Piston Top Aprox. Comp. Ratio:

-12cc Flat Top Oldsmobile
ChamberComp Ratio
64cc11.53 to 1
68cc11.06 to 1
70cc10.84 to 1

Download Piston Instructions

Engine Power TV

The DSS FX, X-Groove Feature