3-3870-4000 Boss 302 Small Block Ford 289 - 302 3-FX Series -3cc Flat Top Boss/Canted Forged Piston Set. 4.000 bore
3-3870-4000 Boss 302 Small Block Ford 289 - 302 3-FX Series -3cc Flat Top Boss/Canted Forged Piston Set. 4.000 bore
3-3870-4000 Boss 302 Small Block Ford 289 - 302 3-FX Series -3cc Flat Top Boss/Canted Forged Piston Set. 4.000 bore
3-3870-4000 Boss 302 Small Block Ford 289 - 302 3-FX Series -3cc Flat Top Boss/Canted Forged Piston Set. 4.000 bore
Load image into Gallery viewer, 3-3870-4000 Boss 302 Small Block Ford 289 - 302 3-FX Series -3cc Flat Top Boss/Canted Forged Piston Set. 4.000 bore
Load image into Gallery viewer, 3-3870-4000 Boss 302 Small Block Ford 289 - 302 3-FX Series -3cc Flat Top Boss/Canted Forged Piston Set. 4.000 bore
Load image into Gallery viewer, 3-3870-4000 Boss 302 Small Block Ford 289 - 302 3-FX Series -3cc Flat Top Boss/Canted Forged Piston Set. 4.000 bore
Load image into Gallery viewer, 3-3870-4000 Boss 302 Small Block Ford 289 - 302 3-FX Series -3cc Flat Top Boss/Canted Forged Piston Set. 4.000 bore

SKU: 3-3870-4000

3-3870-4000 Boss 302 Small Block Ford 289 - 302 3-FX Series -3cc Flat Top Boss/Canted Forged Piston Set. 4.000 bore

$939.95
$939.95
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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.

Boss 302 Small Block Ford 289 - 302 3-FX Series 2618 Alloy Comp Hgt: 1.535" -3cc Flat Top Boss/Canted Pin: .912 Ring Grooves: 1.2/1.2/3MM Stroke: 3.000" Rod: 5.155" Forged and Machined in Saint Charles Illinois USA! Boost and NOS Ready! (Moderate to Extreme Levels) Aprox Comp Ratio: 58cc-9.94, 61cc-9.56, 64cc-9.22

Engine Brand: Ford

Engine Family: Small Block Ford 289 - 302

Engine Size: Boss 302

With/Without Rings: Without Rings

Cylinder Bore Size: 4.000 in - 101.52 mm

Ring Width: 1.2/1.2/3MM

Compression Height: 1.535"

Pin Diameter: .912

Connecting Rod Length: 5.155"

Crankshaft Stroke: 3.000"

Piston Series: 3-FX Series

Alloy: Forged 2618

Cylinder Head: 351 Cleveland \ Boss Open & Closed Chamber

TDC Assembly Height: 8.190

Piston Top Aprox. Comp. Ratio:

-3cc Flat Top Boss/Canted
ChamberComp. Ratio
58cc9.94 to 1
61cc9.56 to 1
64cc9.22 to 1

Download Piston Instructions

Piston Specs

Engine Brand: Ford

Engine Family: Small Block Ford 289 - 302

Engine Size: Boss 302

With/Without Rings: Without Rings

Cylinder Bore Size: 4.000 in - 101.52 mm

Ring Width: 1.2/1.2/3MM

Compression Height: 1.535"

Pin Diameter: .912

Connecting Rod Length: 5.155"

Crankshaft Stroke: 3.000"

Piston Series: 3-FX Series

Alloy: Forged 2618

Cylinder Head: 351 Cleveland \ Boss Open & Closed Chamber

TDC Assembly Height: 8.190

Piston Top Aprox. Comp. Ratio:

-3cc Flat Top Boss/Canted
ChamberComp. Ratio
58cc9.94 to 1
61cc9.56 to 1
64cc9.22 to 1

Download Piston Instructions

Engine Power TV

The DSS FX, X-Groove Feature