Dart SHP Special High Performance Small Block Ford Cast Iron Bare Blocks 31375135 Engine Block, , 4-Bolt Mains, 4.000 in. Bore, 1-Piece Rear Main Seal, 351, Block, Each
Dart SHP Special High Performance Small Block Ford Cast Iron Bare Blocks 31375135 Engine Block, , 4-Bolt Mains, 4.000 in. Bore, 1-Piece Rear Main Seal, 351, Block, Each
Description
Engine - SHP - Bare Block - 4 in Bore - 9.500 Deck - 4-Bolt - 1-Piece Seal - Iron - Small Block Ford - Each
Data: v2 - Desc: v4.2 - Upd: 2026-11-09 02:53:55
Features
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Specifications
Reference Information
| Reference Data (Provide these details to our support team) | |
|---|---|
| Brand Name/s | Dart |
| StreetFX SKU | drt31375135 |
| SFX Item ID | 5090041 |
| Accounting SKU | drt-31375135 |
| Manufacturer SKU | 31375135 |
| Manufacturer UPC | 807501054484 |
| Alternative References | 31375135, DRT-31375135 |
Engine Block, Cast Iron , 4-Bolt Mains, 4.000 in. Bore, 1-Piece Rear Main Seal, Ford 351, Small Block, Each
Dart SHP blocks are tailored to the most popular performance and racing applications. So, when you want more than stock blocks can provide, the strong reliable design and plentiful features of Dart SHP special high performance Ford engine blocks offer the perfect base foundation to start your build.
Key features of SHP small block Ford bare blocks are:
• Brand new precision machined cast iron block
• Scalloped outer water jacket walls improve coolant flow around the cylinder barrels to equalize temperatures
• Priority main oiling system directs oil to the main bearings first for more dependable lubrication
• Available with 302 (8.200 in.) deck height or 351 (9.500 in.)
• Provisions for OE roller lifters, dog bones and spider
• Siamese bores 4.000 in. or 4.125 in. (unfinished) with extra thick cylinder walls
• Extra thick decks ensure reliable head gasket seal
• Blind tapped head bolt holes to prevent water leaks
• Steel 4-bolt main caps on #2, 3 and 4 with splayed outer bolts. (2-bolt main caps on #1 and 5)
• Can use most stock components and accessories
| Product Attributes | |
|---|---|
| Brand | Dart |
| Manufacturer's Part Number | 31375135 |
| Part Type | Engines, Bare Blocks |
| Product Line | Dart SHP Special High Performance Small Block Ford Cast Iron Bare Blocks |
| UPC | 807501054484 |
| Main Journal Type | Ford 351 Cleveland |
| Engine Block Material | Cast iron |
| Engine Block Style | OEM |
| Engine Block Deck Height | Standard deck |
| Deck Height (in.) | 9.500 in. |
| Cylinder Bore as Shipped | 4.000 in. |
| Cylinder Bore Diameter | 4.000 in. |
| Maximum Bore Diameter (in.) | 4.185 |
| Camshaft Location | Standard |
| 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 | No |
| Remanufactured | No |
| Quantity | Sold individually. |
| Notes | Block bores are undersized to allow for piston set up. Steel 4-bolt main caps with splayed outer bolts on 2, 3 and 4, with 2-bolt main caps on 1 and 5. These blocks use SVO style cam bearings. See the “Required Parts” tab for block parts kit that contains coated cam bearings, brass freeze plugs, head, front cover, and bell housing dowels. |
Compatibility
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