Mopar Performance's 426 Hemi Block features a 10.275 in. deck height, 4.240 in. bore, and a standard 4.800 in. bore spacing. With a maximum stroke clearance of 4.500 in. out of the box and a maximum bore of 4.560 in., you can take the Mopar Performance 426 Hemi Block all the way up to 588 cubic inches.

Mopar Performance's 426 Hemi Block crankcase will accept an up to 0.250 in. more stroke with additional machining, allowing up to 620 cubic inches. That's over 10 liters of displacement! 

Features:

• 10.275 in. Deck Height
• 4.240 in. Bore (up to 4.560 in. with additional machining)
• 4.500 in. Maximum Stroke (up to 4.750 in. with additional machining)
• Up to 10.2L of Displacement