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You are here: Home > Engine Kits > Ford - 460 Big Block > 521/533 Cubic Inches - 4.300 Stroke

521/533 cubic inch 385 Series engine kits are based on the 4.360 bore 385 Series engine block and a 4.300 stroke crankshaft. Aftermarket cylinder heads and larger camshafts are a good addition to complement the increased capability. Custom combinations are also available for specialized applications.
Flat Top
Flat top pistons in a 521/533 Ford engine will generally provide compression ratios in the 10.2:1 range with a 100cc head, which makes them a good option for engines with aluminum heads and larger than stock camshafts. Valve reliefs are configured to work with most types of standard and aluminum cylinder heads with OEM valve placement and will normally fit camshafts to slightly over .730 valve lift.

Villain - Cast Crank, through-bolt rods, forged pistons, designed for stock replacement and mild performance applications.

Vigilante - 4340 Forged Crank, I-Beam rods, forged pistons, designed for Street or Street and Strip performance applications.

Vindicator - 4340 Forged Crank, H-Beam rods (ARP-2000), custom forged pistons designed for serious Street or all out Strip applications.

Vanquisher - 4340 Forged Crank, H-Beam rods (ARP-2000), custom forged pistons designed for serious Street or all out Strip applications. All components are Made in the USA.
Dish Top
Dish top pistons in a 521/533 Ford engine will generally provide compression ratios of 10.5:1 with a 72cc head, or 10.5:1 with an 86cc head, which makes them a good option for engines with aluminum heads and larger than stock camshafts. Available pistons are configured to work with most types of standard aluminum cylinder heads with OEM valve placement, or Kaase/SCJ, and will normally fit camshafts to slightly over .730 valve lift.

Villain - Cast Crank, through-bolt rods, forged pistons, designed for stock replacement and mild performance applications.

Vigilante - 4340 Forged Crank, I-Beam rods, forged pistons, designed for Street or Street and Strip performance applications.

Vindicator - 4340 Forged Crank, H-Beam rods (ARP-2000), custom forged pistons designed for serious Street or all out Strip applications.

Vanquisher - 4340 Forged Crank, H-Beam rods (ARP-2000), custom forged pistons designed for serious Street or all out Strip applications. All components are Made in the USA.
Dome Top