1-6718-3947-5.7-Small Block Mopar Hemi Gen III FX1 Series +9cc Dome Top Gen III Hemi-Forged-Piston-Set- 3.947 inch bore
1-6718-3947-5.7-Small Block Mopar Hemi Gen III FX1 Series +9cc Dome Top Gen III Hemi-Forged-Piston-Set- 3.947 inch bore
1-6718-3947-5.7-Small Block Mopar Hemi Gen III FX1 Series +9cc Dome Top Gen III Hemi-Forged-Piston-Set- 3.947 inch bore
1-6718-3947-5.7-Small Block Mopar Hemi Gen III FX1 Series +9cc Dome Top Gen III Hemi-Forged-Piston-Set- 3.947 inch bore
Load image into Gallery viewer, 1-6718-3947-5.7-Small Block Mopar Hemi Gen III FX1 Series +9cc Dome Top Gen III Hemi-Forged-Piston-Set- 3.947 inch bore
Load image into Gallery viewer, 1-6718-3947-5.7-Small Block Mopar Hemi Gen III FX1 Series +9cc Dome Top Gen III Hemi-Forged-Piston-Set- 3.947 inch bore
Load image into Gallery viewer, 1-6718-3947-5.7-Small Block Mopar Hemi Gen III FX1 Series +9cc Dome Top Gen III Hemi-Forged-Piston-Set- 3.947 inch bore
Load image into Gallery viewer, 1-6718-3947-5.7-Small Block Mopar Hemi Gen III FX1 Series +9cc Dome Top Gen III Hemi-Forged-Piston-Set- 3.947 inch bore

SKU: 1-6718-3947

1-6718-3947-5.7-Small Block Mopar Hemi Gen III FX1 Series +9cc Dome Top Gen III Hemi-Forged-Piston-Set- 3.947 inch bore

$719.95
$719.95
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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.

5.7 Small Block Mopar Hemi Gen III FX Comp Height: 1.21 +9cc Dome Top PIN: .927 Ring Groove: 1.2/1.2/3MM Stroke: 3.578 ROD: 6.243 Forged and Machined in Saint Charles Illinois USA! Boost and NOS Ready! (Moderate to High Levels) Comp Ratio: 65cc-12.20, 74cc-10.82, 85cc-9.53


Engine Brand: Mopar

Engine Family: Small Block Mopar Hemi Gen III

Engine Size: 5.7

With/Without Rings: Without Rings

Cylinder Bore Size: 3.947 in - 100.17 mm

Ring Width: 1.2/1.2/3MM

Compression Height: 1.210

Pin Diameter: .927

Connecting Rod Length: 6.243 in

Crankshaft Stroke: 3.578 in

Piston Series: 1 - FX Series

Alloy: Forged 4032

Cylinder Head: Gen III Hemi

TDC Assembly Height: 9.242

Piston Top Aprox. Comp. Ratio:

+9cc Dome Top Gen III Hemi
ChamberComp Ratio
65cc12.2 to 1
74cc10.82 to 1
85cc9.53 to 1

Download Piston Instructions

Piston Specs

Engine Brand: Mopar

Engine Family: Small Block Mopar Hemi Gen III

Engine Size: 5.7

With/Without Rings: Without Rings

Cylinder Bore Size: 3.947 in - 100.17 mm

Ring Width: 1.2/1.2/3MM

Compression Height: 1.210

Pin Diameter: .927

Connecting Rod Length: 6.243 in

Crankshaft Stroke: 3.578 in

Piston Series: 1 - FX Series

Alloy: Forged 4032

Cylinder Head: Gen III Hemi

TDC Assembly Height: 9.242

Piston Top Aprox. Comp. Ratio:

+9cc Dome Top Gen III Hemi
ChamberComp Ratio
65cc12.2 to 1
74cc10.82 to 1
85cc9.53 to 1

Download Piston Instructions

Engine Power TV

The DSS FX, X-Groove Feature