Vehicle Fitment
This part is universal
- Fits Following Engines: 400 CID Chevrolet Small Block Generation I.
Product Details
Billet Main Severe Duty Block by Speedmaster®. The next level of performance is these cast iron Chevy small blocks. Designed to look standard under your bonnet, and work with stock components.Block is ready for the street racer or all out racer with added strength and cubic inches.All the factory flaws redesigned to eliminate all problems, still using water jacket design.Blocks are cast from highest quality high-density iron with extra-thick cylinder walls and decks.The blocks webs are stronger and fitted with billet steel 4-bolt main caps.Ideal for for supercharged, turbocharged and nitrous applications!. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to provide a perfect fit for a hassle free installation, this reliable product can help you get you vehicle back on the road faster and easier.
Specifications
| Cylinder Bore Diameter: 4.125" |
| Bore & Stroke: 4.185" x 4.000" Max Recommended |
| Cam Journal OD: Standard SBC - 1.869 |
| Cam Plug: 2.375" Dia. Cup Plug |
| Cylinder Wall Thickness: 0.275" min @ 4.185" Bore |
| Deck Height: 9.025" |
| Deck Thickness: 0.675" Min |
| Fuel Pump : Standard Mechanical Provision |
| Fuel Pump Pushrod: Standard Length |
| Freeze Plugs: 10 x 1-5/8" Press In Cup Plugs |
| Lifter Bores: SBC 0.8427-0.8437" |
| Main Bearing Size: 2.650" (SBC 400) |
| Main Bearing Bore: 2.849" (SBC 400) |
| Main Cap Bolts: #1 7/16" (2) 3/8" (2) #2, 3, 4 7/16 (2) Splayed (2) #5 7/16" (2) 3/8" (2) |
| Main Cap Press: 0.005" |
| Main Caps: All 5 Billet Steel. 3 Center Caps Splayed |
| Main Cap Register: Deep Stepped Register (No Need for Dowels) |
| Oil System: Wet Sump - Main Priority Oiling (Can Use Dry Sump) |
| Oil Pump Shaft: 350 0.481" OD - Standard |
| Oil Filter: SBC, Uses 2 Bolt Adapter |
| Oil Pan: Standard SBC |
| Rear Main Seal: 400 Main FelPro# 2909 |
| Serial No. Location: Laft Front & Main Caps |
| Starter: Standard SBC |
| Stud Holes, Head: Blind Holes |
| Timing Chain/Gears: Standard SBC Components |
| Timing Cover: Standard Cam Location SBC |
| Torque Specs: 1 - 5 7/16" Bolts 65 ft. lbs. 1 & 5 3/8" Bolts - 35 ft. lbs. |
| Weight: 205 Lbs @ 4.0" Bore |
Features
- Extra thick cylinder walls & decks
- 4 bolt splayed mains
- Enlarged bosses for offset or oversize lifters
- Scalloped water jacket holes for improved cooling
Founded in 1979, Speedmaster® has become a leader in its field, built on a long term consistency of being a specialist in aftermarket automotive components. It began as a small speed workshop building engines for customers as a hobby, and now the company has grown from a one-man bricks-and-mortar business into a worldwide high-performance powerhouse known for assembling, manufacturing and racing high-performance engine parts. Speedmaster’s mission is to push innovation boundaries to create visually distinctive DNA, by blending old and new technology into functionality and aesthetics. Its empowered work forced drives innovation not only in the products it makes but with the way it goes about doing it. The ultimate token of precision, Speedmaster is the world’s only major parts manufacturer to equip cars from Standard replacement to Top Fuel Dragsters. Surviving the longevity of road, race and recreation is mandatory for all Speedmaster “Track Proven” products, bringing you closer to product perfection.
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