The long-awaited Mopar HEMI and WEDGE blocks from World Products are here and now you can buy a complete short block assembly in any of three displacements to go fast-faster! These premium new blocks are made of 357-T6 aluminum, weigh only 142 lbs., and are filled with the same kinds of heavy-duty, high performance parts that the whole line is famous for. Names like Eagle, Arias, Total Seal and Clevite assure quality and value. Each assembly is precision internally balanced at World and carefully assembled to race-quality specs.

Want to take on the "Elephant" on your own? Choose a short block kit. You'll get all the same components that we use in our assemblies and the satisfaction in knowing that you built the beast yourself!

Engine Block: World Products Hemi or Wedge aluminum
Deck Height: 10.725"
Bore/Stroke: 4.500" x 4.150" (528), 4.500" x 4.250" (540), 4.500" x 4.500" (572)
Main Caps: 4-bolt nodular, cross-bolted
Valves: Manley stainless steel
Crankshaft: 4340 Eagle/Scat internally balanced
Connecting Rods: 4340 Eagle/Scat
Pistons: Arias
Gaskets: Felpro
Internal Hardware: ARP

HEMI Compression Ratios (calculated with 170cc combustion chamber head, Fel-Pro 1104 gasket, and piston dome as indicated)
528 Street: 10.4:1, 70cc dome
528 Power Adder: 8.5:1, 40cc dome
540 Street: 10.3:1, 70cc dome
540 Power Adder: 8.4:1, 40cc dome
572 Street: 10.5:1, 65cc dome

WEDGE Compression Ratios (calculated with 75cc combustion chamber head, .051" gasket, and piston dome as indicated)
528 Street: 10.5:1, -24cc dome
540 Street: 10.2:1, -27cc dome
572 Street: 10.2:1, -34cc dome