The Sportsman block shares most of the Little M's best features, but saves you money by using ductile iron main bearing caps (4 bolt on the center three and 2 bolt on the ends), and employing a rear external oil feed, crossover and restrictor provision.

Features:

• Extra thick cylinder walls resist cracking and improve ring seal for more power.
  
• Scalloped outer water jacket walls improve coolant flow around the cylinder barrels to equalize temperatures.
  
• Priority main oiling system directs oil to the main bearings first for more dependable lubrication.
  
• Blind tapped head bolt holes prevent water leaks.
  
• Extra thick decks ensure reliable head gasket seal.
  
• Standard small block deck height allows use of off the shelf parts.
  
• Splayed outer bolts on middle main bearing caps prevent cracks.
  
• Open lifter valley improves return to oil pan.
  
• Enlarged lifter bosses accommodate offset and oversize lifters.
  
• Nodular iron main bearing caps. Utilizes standard pan, oil pump and two piece seal.
  
• Rear external oil feed, crossover and restrictor provision.
  
• Cam bearings, freeze plugs and dowels are not included.
• 400 Mains
• 4.00 Bore