Chevy SBC 400 B-4.125 M-400 DH-9.025 4-Bolt Billet Main Bare Iron Engine Block

  
If your standard Bowtie block could handle 1500+ HP it would be Speedmaster's H1 engine block. Design from the ground up based upon your favourite bowtie block with the ability to handle naturally aspirated, supercharged, turbocharged and nitrous applications. Standard SBC - 1.869. SBC 0.8427-0.8437 in. (2) #2, 3, 4 7/16 (2) Splayed (2) #5 7/16 in. Deep Stepped Register (No Need for Dowels). Wet Sump - Main Priority Oiling (Can Use Dry Sump).

SBC, Uses 2 Bolt Adapter. Laft Front & Main Caps. 1 - 5 7/16 in. 1 & 5 3/8 in.

Cam Bearings not Included, Replaces Dart 31182211. The Speedmaster H1 is the perfect starting point for a powerful and reliable engine build suited for the street or race track. Precision pre-machining is the perfect starting point for a powerful and reliable engine eliminating time and expense of blueprinting a stock block or''semi-finished'' factory casting. Best of all can be used with standard off the shelf small block components.

Speedmaster H1 Chevy SBC bare blocks feature. Cast from premium high-strength Class 32B iron.

Standard deck height allows the use of off the shelf parts. Uses standard small block Camshaft, Timing Chain, Oil pump, Oil filter, Motor Mounts. Priority main oiling system directs oil to main bearings. Blind tapped head bolt holes prevent water leaks. Extra thick decks ensure reliable head gasket seal. Billet steel 4-bolt main caps (splayed for extra strength). Front and rear external oil feed, crossover and restrictor provision. Simplified plumbing for external pumps. WARNING: This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. UNLOCK / SAVE / ENJOY. Earn points to climb tiers and enjoy benefits such as access to special offers and discounts, advance notice of events and promotions and more. Everyone starts with Red Status and can rise through Bronze, Silver, Gold, Platinum, Black and Vibranium.

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Please note: high performance parts are not direct replacement parts for OEM parts, and may not fit your application as original OEM parts, and may require slight modifications depending on the intended purpose of some applications.