4.155" Ford 428 / 431 FE Stroker Pistons (428 crank) + 025" Flat Top, 4032 Forged Pistons, -11 cc CH 1.670" Big Block Ford

Forged Pistons Ford FE 428 Flat Top with 3.980 Standard 428 Crankshaft

Racetec / Autotec AT-1000779

4.155" +025" Flat Top - Forged Pistons Suits: 

• Ford FE 428 Cobra Jet Big Block 
• 3.980" 428 Crankshaft & Factory 6.490" Conrods 

Racetec / Autotec Forged Pistons

Manufactured on forged side relief, 4032 low expansion, high silicon material excellent for street or strip applications. Diamond turned skirts. CNC precision machined ring grooves. These forged pistons come with Top ring land gas distribution grooves to enhance performance & improved ring seal. These precision forged pistons also come with broached pin oiling & accumulator grooves. 

• Piston Material: Forged 4032 low expansion
• Engine: Ford FE Big Block - 428 Cobra Jet
• Engine Cubic Capacity: 431
• Bore Oversize: +025"
• Piston Bore Size: 4.155"
• Piston Compression Height: 1.670"
• Crankshaft Stroke: 3.980”  (428 Crankshaft)
• Rod Length: 6.490”  (Factory OEM conrods)
• Piston Top: Flat Top -11cc
• Wrist Pin Size: 0.975"  (Ford size)
• Piston Weight: 563 grams
• Rings Size: 1.5mm, 1.5mm, 3.0mm rings
• Gudgeon/Wrist Pin:  0.975" - Included. 
• Wire Locks:  Included 
• Piston Rings included: NO - Recommend AT-4155

Note: Photos are not of actual product, Image may differ from actual product.