Little M Chevy Small Block Iron Block – 4.000-4.125 In. Bore, 9.025 In. Deck
The Dart Little M is designed from the ground up as a true racing engine block which can be used with standard o the shelf small block components.
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. Front and rear external oil feed, crossover and restrictor provision simplify plumbing with external
pumps.
Features
• Uses standard small block parts, including cam, timing chain, oil pump, oil pan, oil filter, motor mounts, mechanical fuel pump, and clutch linkage.
• Priority main oiling system feeds main bearings first.
• Siamese cylinder bores with extra thick walls resist cracking and improve ring seal for more power (minimum .275” thick with 4.185” bore).
• Open lifter valley improves oil return to pan.
• Enlarged lifter bosses accommodate o set and oversize lifters.
• Blind head bolt holes don’t go through to water jacket.
• Billet steel 4-bolt main bearing caps on all 5 mains.
• Front & rear external oil feed, crossover and restrictor provision to simplify use of external oil pumps.
• Parts kit included (PN 32000028).
Parts kits do not include cam bearings.
LITTLE M - IRON
LITTLE M SPECS
- Material: 220 BHN Cast Iron
- Deck Height: 9.025” (stock)
- Cylinder Bores: 4.000” or 4.125” (4.185”max)
- Main Bearings: 350 or 400
- Main Caps: Steel 4-bolt
- Cam Location: Stock
- Lifter Bores: Stock .842”
- Freeze Plugs: Press fit
- Rear Seal: 2-Piece
- Weight: 197-205 lbs.
31181111 Little M 2-Piece Steel 350 9.025" 4.000"
31181211 Little M 2-Piece Steel 350 9.025" 4.125"
31182111 Little M 2-Piece Steel 400 9.025" 4.000"
31182211 Little M 2-Piece Steel 400 9.025" 4.125"