Dart Race Series Big Block Chevy Aluminum Bare Blocks 31264345 Engine Block, Cast Iron, 4-Bolt Mains, 4.250 in. Diameter Bore, 2-Piece Rear Main Seal, Chevy, Block, Each
Dart Race Series Big Block Chevy Aluminum Bare Blocks 31264345 Engine Block, Cast Iron, 4-Bolt Mains, 4.250 in. Diameter Bore, 2-Piece Rear Main Seal, Chevy, Block, Each
Description
What makes the Dart Race Series big block Chevy aluminum bare blocks the top choice for serious competition engines? They're based on the Chevrolet big block V8 design, but with added features and Dart's implemented advanced engineering!
Key features of these Dart Race Series blocks include:
* Cast from virgin 355-T61 aerospace alloy for strength
* Ductile iron sleeves with extra thick cylinder walls promote excellent ring seal
* Reinforcing ribs strengthen the lifter valley bellhousing flange
* Inboard valley head stud bosses improve gasket sealing
* Priority main oiling system delivers oil directly to the crankshaft bearings to enhance reliability at high engine speeds
* Standard BBC cam journals, up to 60mm with raised cam options available
* Standard .842 in. BBC lifter bores, other options available
* Available with or without distributor provision
* Steel 4-bolt main caps with splayed outer bolts for extra strength (light-weight aluminum caps also available)
* Mechanical fuel pump boss, clutch linkage mounts, and side and front motor mounts simplify installation in chassis
* Dual oil pan bolt patterns fit standard and notched oil pans
Part Type
Engines, Bare Blocks
Specifications
- Product Attributes - Brand
- Dart
- Product Attributes - Manufacturer's Part Number
- 31264345
- Product Attributes - Part Type
- Engines, Bare Blocks
- Product Attributes - Product Line
- Dart Race Series Big Block Chevy Aluminum Bare Blocks
- Product Attributes - UPC
- 807051017144
- Product Attributes - Main Journal Type
- Chevy 454
- Product Attributes - Engine Block Material
- Cast iron
- Product Attributes - Engine Block Style
- Aftermarket
- Product Attributes - Engine Block Deck Height
- Standard deck
- Product Attributes - Deck Height (in.)
- 9.800 in.
- Product Attributes - Cylinder Bore as Shipped
- 4.240 in.
- Product Attributes - Cylinder Bore Diameter
- 4.250 in.
- Product Attributes - Maximum Bore Diameter (in.)
- 4.600
- Product Attributes - Camshaft Location
- Standard
- Product Attributes - Engine Block Weight (lbs.)
- 285 lbs.
- Product Attributes - Main Bolt Style
- 4-bolt
- Product Attributes - Main Caps Included
- Yes
- Product Attributes - Main Cap Material
- Steel
- Product Attributes - Main Cap Fasteners Included
- Yes
- Product Attributes - Main Bearings Included
- No
- Product Attributes - Rear Main Seal Style
- 2-piece
- Product Attributes - Finished Cylinder Bores
- No
- Product Attributes - Raised Cam Location
- Yes
- Product Attributes - Cam Bearings Included
- No
- Product Attributes - Freeze Plugs Included
- Yes
- Product Attributes - Remanufactured
- No
- Product Attributes - Quantity
- Sold individually.
- Product Attributes - Notes
- Block bores are .10 undersized to allow for piston set up.
Reference Information
| Brand Name/s | Dart |
|---|---|
| StreetFX SKU | drt31264345 |
| SFX Item ID | 5089045 |
| Supplier Item Code | 5089045 |
| Manufacturer SKU | 31264345 |
| Manufacturer UPC | 807051017144 |
| Alternative References | 4-Bolt, 2-Piece |
Compatibility
| Application Data |
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