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Dart Little "M" Cast Iron Small Block Engine BlocksUSA Made
Dart Little 'M' Cast Iron Small Block Engine Blocks SB Chevy Little 'M' Sportsman - Ductile Caps Part Numbers: Bore Size: Mains: Deck Height: 31151111 4.000' 350 Standard 31151211 4.125' 350 Standard 31152211 4.125' 400 Standard   Little 'M' Sportsman The Sportsman block ...
DartLittle "M" SBC Engine Block

Dart

Dart Little "M" Cast Iron Small Block Engine Blocks

USA Made

From: $2,207.99
Choose a Little "M" Block
Please Select
31131111
Competition Bore: 4" Main: 350
$2,630.04
31131211
Competition Bore: 4.125" Main: 350
$2,630.04
31132211
Competition Bore: 4.125" Main: 400
$2,630.04
31151111
Sportsman Bore: 4" Main: 350
$2,207.99
31151211
Sportsman Bore: 4.125" Main: 350
$2,217.18
31152211
Sportsman Bore: 4.125" Main: 400
$2,217.18

Applies To Continental U.S. orders only

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Description

Dart Little "M" Cast Iron Small Block Engine Blocks


SB Chevy Little "M" Sportsman - Ductile Caps
Part Numbers: Bore Size: Mains: Deck Height:
31151111 4.000" 350 Standard
31151211 4.125" 350 Standard
31152211 4.125" 400 Standard

 Little "M" Sportsman

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.

SB Chevy Little "M" Competition - Billet Steel Caps
Part Numbers: Bore Size: Mains: Deck Height:
31151111 4.000" 350 Standard
31151211 4.125" 350 Standard
31152211 4.125" 400 Standard

Little "M" Competition
The Little M is cast from premium high strength iron and beefed up in all the critical areas. A competition oiling system ensures adequate lubrication to the main bearings at high rpm. You can select 4.000" or 4.125" cylinder bores, and 350 or 400 main bearings with steel 4 bolt main caps. Front and rear external oil feed, crossover and restrictor provision simplify plumbing with external pumps.

With a standard deck height, extra thick siamese cylinder walls and a competition oiling system, the Little M is the perfect starting point for a powerful and reliable engine for the street or the race track.

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.
  • 4 bolt billet steel main caps have splayed outer bolts for extra strength.
  • Front and rear external oil inlets, crossovers and restrictor provisions to simplify plumbing with external pump.
  • Block includes special coated cam bearings, freeze plugs and dowels.
  • Cast from premium high strength iron & beefed up in all critical
  • Small block feature standard deck height, extra thick cylinder walls
  • Competion oiling system
  • Are designed to be used with standard off the shelf components
  • Sportsman block have nodular iron main caps, center 3 are 4 bolt & ends are 2 bolt
  • Sportsman blocks do not come with cam bearings, freeze plugs & dowels
  • Competition block have all billet steel 4 bolt main caps
  • Competition blocks come with coated cam bearings, freeze plugs & dowels
Application List
ImageSKU / Part NoApplicationStockPriceAdd to Cart
DAT31131111 DAT31131111Choose a Little "M" Block: Competition Bore: 4" Main: 3500$2,630.04BUY
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DAT31131211 DAT31131211Choose a Little "M" Block: Competition Bore: 4.125" Main: 3500$2,630.04BUY
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DAT31132211 DAT31132211Choose a Little "M" Block: Competition Bore: 4.125" Main: 4000$2,630.04BUY
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DAT31151111 DAT31151111Choose a Little "M" Block: Sportsman Bore: 4" Main: 3500$2,207.99BUY
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DAT31151211 DAT31151211Choose a Little "M" Block: Sportsman Bore: 4.125" Main: 3500$2,217.18BUY
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DAT31152211 DAT31152211Choose a Little "M" Block: Sportsman Bore: 4.125" Main: 4000$2,217.18BUY
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