Blocks

Please choose from one of the following sections:

Dart Little "M" Blocks

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!

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.

Little "M" Blocks

Max Bore 4.185". Max Stroke 3.750"

Please inquire for all other Dart Blocks! 425-941-2267!