- Icon Forged Pistons are forged from high ductile 2618 alloy. They have dual forced pin oiling on most applications and offer lateral gas porting on high compression ratios. They are fully machined with deep valve pockets. They include top land mini groove technology, second land accumulator grooves, Diamond finished skirts, and triple wound spiral locks.
Compression Ratio with 58cc Heads 9.8:1
Compression Ratio with 64cc 9.1:1
Advertised piston weight 428 grams, 131 gram wrist pin.
SKU IC747-060 Manufacturer Icon Vehicle Make Ford SB Bore Size 4.060 Wrist Pin Size 0.927 Piston Material 2618 Forged Compression Height 1.298 Piston Ring Size 1/16 1/16 3/16 Piston Type Flat Top -4.8cc Rod Length 5.400 Crankshaft Stroke 3.000 List price No