Dart Race Series Small Block Ford Aluminum Bare Blocks 31345135 Engine Block, Aluminum, 4-Bolt Mains, 4.000 in. Diameter Bore, 1-Piece Rear Main Seal, Ford, Block, Each
Dart Race Series Small Block Ford Aluminum Bare Blocks 31345135 Engine Block, Aluminum, 4-Bolt Mains, 4.000 in. Diameter Bore, 1-Piece Rear Main Seal, Ford, Block, Each
A$14,631.75
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Description
IMPORTANT NOTICE: 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.Reference Information Reference Data (Provide these details to our support team) Brand Name/s Dart StreetFX SKU drt31345135 SFX Item ID 5089550 Accounting SKU drt-31345135 Manufacturer SKU 31345135 Manufacturer UPC 807051018189 Alternative References 31345135, DRT-31345135
Data: v2 - Desc: v4.2 - Upd: 2026-10-14 03:26:16
Part Type
Engines, Bare Blocks
Specifications
Engine Block, Aluminum, 4-Bolt Mains, 4.000 in. Diameter Bore, 1-Piece Rear Main Seal, Ford, Small Block, Each
Dart puts Ford racers in front with their Race Series small block Ford aluminum bare blocks designed just for Fords!
The highlights and features of Race Series blocks include:
• Cast 355-T6 aerospace alloy blocks for superior strength and integrity
• Siamesed cylinders with standard 4.00 in. or 4.125 in. cylinder bores, which can be safely bored to 4.165 in. diameters
• Ductile iron sleeves and extra-thick walls prevent cracking and produce excellent ring seal
• Scalloped water jackets increase coolant flow around cylinder barrels to prevent detonations, extend engine life, and produce consistent cylinder temperatures
• Four deck heights are available
• Steel 4-bolt main bearing caps are standard. Three center caps have splayed outer bolts for maximum strength; rear cap uses standard one-piece seal
• Two main bearing diameters of 2.249 in. or 2.749 in. allow choice of small or large journal crankshaft
• Stock components make Dart blocks a direct replacement for most production small blocks.
• Provisions for stock motor mounts, accessory drives, smog pumps, starter brackets, oil pans, and pumps
• Upgraded oiling system has a complete stock-type system, plus a low-restriction priority main oiling with front and rear external oil pump feeds
• Dual crossovers allow oil flow to be metered with restrictors for roller lifter cams and/or roller rocker arms to reduce oil flow and windage
• Reinforced head bolt bosses are blind-tapped to prevent leaks and produce accurate torque readings
• Extra-thick decks prevent head gaskets leaks
• Standard camshafts and camshaft drives can be used
• Precision CNC machining ensures consistently high quality and eliminates expensive "blueprinting"
| Product Attributes | |
|---|---|
| Brand | Dart |
| Manufacturer's Part Number | 31345135 |
| Part Type | Engines, Bare Blocks |
| Product Line | Dart Race Series Small Block Ford Aluminum Bare Blocks |
| UPC | 807051018189 |
| Main Journal Type | Ford 351 Cleveland |
| Engine Block Material | Aluminum |
| Engine Block Style | Aftermarket |
| Engine Block Deck Height | Standard deck |
| Deck Height (in.) | 9.500 in. |
| Cylinder Bore as Shipped | 3.990 in. |
| Cylinder Bore Diameter | 4.000 in. |
| Maximum Bore Diameter (in.) | 4.165 |
| Camshaft Location | Standard |
| Engine Block Weight (lbs.) | 93 lbs. |
| Main Bolt Style | 4-bolt |
| Main Caps Included | Yes |
| Main Cap Material | Steel |
| Main Cap Fasteners Included | Yes |
| Main Bearings Included | No |
| Rear Main Seal Style | 1-piece |
| Finished Cylinder Bores | No |
| Raised Cam Location | No |
| Cam Bearings Included | No |
| Freeze Plugs Included | Yes |
| Remanufactured | No |
| Quantity | Sold individually. |
| Notes | Block bores are .10 undersized to allow for piston set up. |
Reference Information
| Brand Name/s | Dart |
|---|---|
| StreetFX SKU | drt31345135 |
| SFX Item ID | 5089550 |
| Supplier Item Code | 5089550 |
| Manufacturer SKU | 31345135 |
| Manufacturer UPC | 807051018189 |
| Alternative References | 4-Bolt, 1-Piece |
Compatibility
No specific fitment data available for this part. For clarification, please contact us.
Detailed Compatibility
| Application Data | |
|---|---|
| Make | FORD |
| Engine Type | V8 |
| Engine Family | Ford small block Windsor |
This may not be an exhaustive list of compatible vehicles. Please reach out to one of our representatives if you are unsure or do not see your vehicle here.
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