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Dart Iron Eagle Small Block Chevy Cast Bare Blocks 31121111 Engine Block, Iron, 4-Bolt Mains, 4.000 in. Diameter Bore, 2-Piece Rear Main Seal, Chevy, Block, Each

SKU: DRT31121111

Engines, Bare Blocks

Dart Iron Eagle Small Block Chevy Cast Bare Blocks 31121111 Engine Block, Iron, 4-Bolt Mains, 4.000 in. Diameter Bore, 2-Piece Rear Main Seal, Chevy, Block, Each

SKU: DRT31121111

Engines, Bare Blocks
A$13,108.93
Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.

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Description


Data: v2 - Desc: v4.2 - Upd: 2026-11-07 19:42:13

Data: v4.2 - Upd: 2026-11-07 20:31:45

Features

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Dart
StreetFX SKU drt31121111
SFX Item ID 5089309
Accounting SKU drt-31121111
Manufacturer SKU 31121111
Manufacturer UPC 807051015898
Alternative References 31121111, DRT-31121111

Engine Block, Cast Iron, 4-Bolt Mains, 4.000 in. Diameter Bore, 2-Piece Rear Main Seal, Chevy, Small Block, Each

Dart Iron Eagle small block Chevy cast iron bare blocks are designed to meet the needs of hot rodders, stock car racers, sprint car teams, drag racers, and road racers who want a real racing block--but at an affordable price. These versatile Dart blocks are a great starting point for big cubic inch small block projects--you can even build a 455 c.i.d. small block!

Iron Eagle Small Block Chevy cast iron bare blocks feature:
• Standard 9.025 in. and tall deck 9.325 in. versions allow for greater versatility
• Raised camshaft .391 in. (4.912 in. camshaft to crankshaft centerlines) provides more clearance for stroker cranks and eliminates need for fragile small base circle cams (option for .434 raised cam also available)
• Relocated oil pan rails are spread .400 in. per side (.800 in. wider than stock) to increase crank/rod clearance and reduce windage losses
• Oil pan bolt holes are relocated in line with main caps to eliminate interference with rotating assembly
• Dual starter mounts allow starter to be mounted on either side of block for chassis and oil pan clearance
• Front and rear external oil inlets, crossover and restrictor provisions provided to simplify plumbing with external pump

Product Attributes
BrandDart
Manufacturer's Part Number31121111
Part TypeEngines, Bare Blocks
Product LineDart Iron Eagle Small Block Chevy Cast Iron Bare Blocks
UPC807051015898
Main Journal TypeChevy 350
Engine Block MaterialCast iron
Engine Block StyleOEM
Engine Block Deck HeightStandard deck
Deck Height (in.)9.025 in.
Cylinder Bore as Shipped3.990 in.
Cylinder Bore Diameter4.000 in.
Maximum Bore Diameter (in.)4.185
Camshaft LocationStandard
Engine Block Weight (lbs.)205 lbs.
Main Bolt Style4-bolt
Main Caps IncludedYes
Main Cap MaterialSteel
Main Cap Fasteners IncludedYes
Main Bearings IncludedNo
Rear Main Seal Style2-piece
Finished Cylinder BoresNo
Raised Cam LocationYes
Cam Bearings IncludedNo
Freeze Plugs IncludedYes
RemanufacturedNo
QuantitySold individually.
NotesBlock has no provision for spin on oil filter. Block bores are .10 undersized to allow for piston set up.

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