Dart 31192211 Little M Small Block Chevy Cast Iron Engine Block 4.125 Bore 9.025 Deck 400 Main

The Dart Little M small block Chevy cast iron bare block delivers performance beyond standard small block features, combining a standard deck height with extra thick Siamese cylinder walls and a competition oiling system for powerful and reliable street or race track engine builds.

Key Specifications:

• 4.125 inch bore capacity with 9.025 inch deck height
• 400 main journal size with 4-bolt main caps
• 2-piece rear main seal design
• Cast from premium high-strength Class 32B iron
• Weight: 197-205 lbs

Performance Features:

• Priority main oiling system directs oil to main bearings first
• Billet steel 4-bolt main caps with splayed bolts for extra strength
• Siamese cylinder bores with extra thick walls resist cracking and improve ring seal
• Blind tapped head bolt holes prevent water leaks
• Front and rear external oil feed, crossover and restrictor provision simplify plumbing

Uses standard small block parts including cam, timing chain, oil pump, oil pan, oil filter, motor mounts, mechanical fuel pump, and clutch linkage, making it an ideal choice for racers who want performance without custom components. Standard deck height allows use of off-the-shelf parts, reducing build costs while maintaining race-ready performance capabilities.