Looking to build the ultimate small block 427 Ford engine for your vintage Cobra, muscle car, street rod, or Mustang' How about starting with a lightweight aluminum 427 short block from Ford Racing. Ford Racing Engineers have taken care of the toughest part of building a new engine by designing a strong a durable short block that offers a wide range of power possibilities. We use only the best parts for our short blocks, like a forged steel crankshaft, forged H-beam connecting rods with floating piston pins, forged Mahle pistons, and the Ford Racing aluminum block. And every Ford Racing short block is hand assembled in the U.S. with performance clearances - these are truly custom built assemblies.