4.080" Ford FE 390 / 416 FE Stroker Pistons (428 crank) + 030" Flat Top, 4032 Forged Pistons, -5 cc CH 1.670" Big Block Ford

Forged Pistons Ford FE 390 Flat Top with 428 Crankshaft

Racetec / Autotec AT-1000779

4.080" +030" Flat Top - Forged Pistons Suits: 

• Ford FE 390 Big Block 
• 428 Crankshaft Stroke with Standard 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 - 390
• Engine Cubic Capacity: 416
• Bore Oversize: +030"
• Piston Bore Size: 4.080"
• Piston Compression Height: 1.670"
• Crankshaft Stroke: 3.980”  (FE 428 Crankshaft)
• Rod Length: 6.490”  (Factory FE)
• Piston Top: Flat Top -5cc
• Wrist Pin Size: 0.975"  (Factory FE)
• Piston Weight: 561 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-4080

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