Dart Little M Blocks

DART Little "M" Block Our new cast-iron Little M block is a small-block breakthrough! The Little M uses standard small-block components - and then adds features you can't get in any production casting. The Little M block is the affordable alternative for serious small-block racers. Our precision machining eliminates the time and expense of "blueprinting" a stock block. With extra-thick cylinder walls, four-bolt main bearing caps, 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 The Little M gives you the choices you want in a production-type block. You can select nodular iron or steel four-bolt main bearing caps, .400" or 4.125" cylinder bores, and 350 or 400 main bearings. Build it your way with Dart! Don't waste time on a questionable junkyard block or waste money on machining a "semi-finished" factory casting. The Little M is brand new, fully machined and virtually ready to assemble with off-the-shelf small-block components. You'll make more power and save money in the long run with a strong, reliable Dart Little M block!

Dart Little M Block Feartures:

Extra-thick cylinder walls resist cracking and improve ring seal for more power (minimum .275" thick with 4.125" bore).
Scalloped water jacket walls improve flow around cylinders for better cooling.
Priority main oiling system directs oil to main bearings first for more dependable lubrication.
Front oil inlet simplifies plumbing with external pump.
Blind-tapped head bolt holes prevent water leaks.
Extra-thick decks ensure reliable head gasket seal.
Standard small-block deck height allows use of the off-the-shelf parts
Four-bolt main bearing caps maintain proper bearing clearance under high loads.
Splayed outer bolts on middle main bearing caps prevent cracks.
Front four-bolt cap clears standard oil pan
Rear four-bolt cap uses standard oiil pump and two-piece seal - NO adapter required
Open lifter valley improves oil return to pan.
Enlarged lifter bosses accommodate offset and oversized lifters.