3-3875-4040 Boss 302 Small Block Ford 289 - 302 3-FX Series +7.5cc Dome Top Cleveland Open & Closed Chamber Forged Piston Set. 4.040 bore
3-3875-4040 Boss 302 Small Block Ford 289 - 302 3-FX Series +7.5cc Dome Top Cleveland Open & Closed Chamber Forged Piston Set. 4.040 bore
3-3875-4040 Boss 302 Small Block Ford 289 - 302 3-FX Series +7.5cc Dome Top Cleveland Open & Closed Chamber Forged Piston Set. 4.040 bore
Load image into Gallery viewer, 3-3875-4040 Boss 302 Small Block Ford 289 - 302 3-FX Series +7.5cc Dome Top Cleveland Open & Closed Chamber Forged Piston Set. 4.040 bore
Load image into Gallery viewer, 3-3875-4040 Boss 302 Small Block Ford 289 - 302 3-FX Series +7.5cc Dome Top Cleveland Open & Closed Chamber Forged Piston Set. 4.040 bore
Load image into Gallery viewer, 3-3875-4040 Boss 302 Small Block Ford 289 - 302 3-FX Series +7.5cc Dome Top Cleveland Open & Closed Chamber Forged Piston Set. 4.040 bore

SKU: 3-3875-4040

3-3875-4040 Boss 302 Small Block Ford 289 - 302 3-FX Series +7.5cc Dome Top Cleveland Open & Closed Chamber Forged Piston Set. 4.040 bore

$939.95
$939.95
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Made in the USA

Made in the USA

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Boss 302 Small Block Ford 289 - 302 3-FX Series 2618 Alloy Comp Hgt: 1.535" +7.5cc Dome Top Cleveland Open & Closed Chamber 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-11.71, 61cc-11.19, 64cc-10.72

Engine Brand: Ford

Engine Family: Small Block Ford 289 - 302

Engine Size: Boss 302

With/Without Rings: Without Rings

Cylinder Bore Size: 4.040 in - 102.54 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:

+7.5cc Dome Top Cleveland Open & Closed Chamber
ChamberComp. Ratio
58cc11.71 to 1
61cc11.19 to 1
64cc10.72 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: 4.040 in - 102.54 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:

+7.5cc Dome Top Cleveland Open & Closed Chamber
ChamberComp. Ratio
58cc11.71 to 1
61cc11.19 to 1
64cc10.72 to 1

Download Piston Instructions

Engine Power TV

The DSS FX, X-Groove Feature