K3-3975-4030 400M Small Block Ford 400M K3 FX Series +7.5cc Dome Top 351 Cleveland \ Boss Open & Closed Chamber Forged Piston Set 4.030 inch bore
K3-3975-4030 400M Small Block Ford 400M K3 FX Series +7.5cc Dome Top 351 Cleveland \ Boss Open & Closed Chamber Forged Piston Set 4.030 inch bore
K3-3975-4030 400M Small Block Ford 400M K3 FX Series +7.5cc Dome Top 351 Cleveland \ Boss Open & Closed Chamber Forged Piston Set 4.030 inch bore
K3-3975-4030 400M Small Block Ford 400M K3 FX Series +7.5cc Dome Top 351 Cleveland \ Boss Open & Closed Chamber Forged Piston Set 4.030 inch bore
Load image into Gallery viewer, K3-3975-4030 400M Small Block Ford 400M K3 FX Series +7.5cc Dome Top 351 Cleveland \ Boss Open & Closed Chamber Forged Piston Set 4.030 inch bore
Load image into Gallery viewer, K3-3975-4030 400M Small Block Ford 400M K3 FX Series +7.5cc Dome Top 351 Cleveland \ Boss Open & Closed Chamber Forged Piston Set 4.030 inch bore
Load image into Gallery viewer, K3-3975-4030 400M Small Block Ford 400M K3 FX Series +7.5cc Dome Top 351 Cleveland \ Boss Open & Closed Chamber Forged Piston Set 4.030 inch bore
Load image into Gallery viewer, K3-3975-4030 400M Small Block Ford 400M K3 FX Series +7.5cc Dome Top 351 Cleveland \ Boss Open & Closed Chamber Forged Piston Set 4.030 inch bore

SKU: K3-3975-4030

K3-3975-4030 400M Small Block Ford 400M K3 FX Series +7.5cc Dome Top 351 Cleveland \ Boss Open & Closed Chamber Forged Piston Set 4.030 inch bore

$1,114.95
$1,114.95
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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.

408 Small Block Ford 400M, FX 2618 Alloy, Comp Height: 1.71, +7.5cc Dome Top, PIN: .975, Full-Floating or Press Fit, Ring Groove: 1.2/1.2/3MM, Stroke: 4, ROD: 6.58, Includes matching DSS Racing ring set, Appox Comp Ratio: 58cc-15.33, 64cc-13.98, 70cc-12.89


Engine Brand: Ford

Engine Family: Small Block Ford 400M

Engine Size: 400M

With/Without Rings: Includes Rings

Cylinder Bore Size: 4.030 in , 102.281 mm

Ring Width: 1.2/1.2/3MM

Compression Height: 1.710"

Pin Diameter: 0.975"

Connecting Rod Length: 6.580"

Crankshaft Stroke: 4.000"

Piston Series: 3 - FX 2618 Alloy Gas Ports, XP Pin Upgrade, Spiral Locks

Alloy: 2618 Alloy

Cylinder Head: 351 Cleveland \ Boss Open & Closed Chamber

TDC Assembly Height: 10.290"

Piston Top Aprox. Comp. Ratio:

+7.5cc Dome Top 351 Cleveland \ Boss Open & Closed Chamber
ChamberComp Ratio
5815.33 to 1
6413.98 to 1
7012.89 to 1

Download Piston Instructions

Piston Specs

Engine Brand: Ford

Engine Family: Small Block Ford 400M

Engine Size: 400M

With/Without Rings: Includes Rings

Cylinder Bore Size: 4.030 in , 102.281 mm

Ring Width: 1.2/1.2/3MM

Compression Height: 1.710"

Pin Diameter: 0.975"

Connecting Rod Length: 6.580"

Crankshaft Stroke: 4.000"

Piston Series: 3 - FX 2618 Alloy Gas Ports, XP Pin Upgrade, Spiral Locks

Alloy: 2618 Alloy

Cylinder Head: 351 Cleveland \ Boss Open & Closed Chamber

TDC Assembly Height: 10.290"

Piston Top Aprox. Comp. Ratio:

+7.5cc Dome Top 351 Cleveland \ Boss Open & Closed Chamber
ChamberComp Ratio
5815.33 to 1
6413.98 to 1
7012.89 to 1

Download Piston Instructions

Engine Power TV

The DSS FX, X-Groove Feature