BluePrint Engines GM Small Block Compatible Bare Engine Blocks BPP12110344

Name: BluePrint Engines GM Small Block Compatible Bare Engine Blocks
Brand: BluePrint Engines
SKU: MLL-BPP12110344
Price: 2299.99 USD
Availability: InStock
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Part Number: MLL-BPP12110344

$2,299.99

BluePrint Engines GM Small Block Compatible Bare Engine Blocks

Engine Block SBC, 2PC, SIAM, 9.025 x 4.000, 350MAIN, CAST MC
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BluePrint Engines GM Small Block Compatible Bare Engine Blocks BPP12110344

MLL-BPP12110344

Not Yet Reviewed

Part Number: MLL-BPP12110344

Estimated Ship Date: Monday 10/19/2026

$2,299.99

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Overview

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Q&A

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Estimated Ship Date: Monday 10/19/2026 Would you rather pick it up?

Overview

Brand:

BluePrint Engines

Manufacturer's Part Number:

BPP12110344

Part Type:

Engines, Bare Blocks

Product Line:

BluePrint Engines GM Small Block Compatible Bare Engine Blocks

Summit Racing Part Number:

MLL-BPP12110344

UPC:

00887753979544

Main Journal Type:

Chevy 350

Engine Block Material:

Cast iron

Engine Block Style:

Aftermarket

Engine Block Deck Height:

Standard deck

Deck Height (in.):

9.025 in.

Cylinder Bore as Shipped:

3.989 in.

Maximum Bore Diameter (in.):

4.250

Camshaft Location:

Standard

Engine Block Weight (lbs.):

190 lbs.

Main Bolt Style:

4-bolt

Main Caps Included:

Yes

Main Cap Material:

Cast iron

Main Cap Fasteners Included:

Yes

Main Bearings Included:

Rear Main Seal Style:

2-piece

Finished Cylinder Bores:

Raised Cam Location:

Cam Bearings Included:

Freeze Plugs Included:

Remanufactured:

Quantity:

Sold individually.

Special Attention:

Cylinder bore as shipped is within the range of 3.989 in. to 3.991 in. diameter.

BluePrint Engines GM Small Block Compatible Bare Engine Blocks

If you're aiming to build a stout, reliable small block without breaking into exotic territory, the BluePrint Engines GM Small Block Compatible Bare Engine Blocks are the perfect foundation. Engineered to comfortably support combinations all the way up to 454 cubic inches, they deliver the strength, precision, and durability builder's demand. With thick cylinder walls, a rigid casting, and smart machining allowances, the BluePrint GM Small Block Compatible Bare Engine Blocks are structured to handle everything from a crisp street cruiser to a hard-hitting weekend track car.

Key features and specifications:

* Material Construction: EN-GJL-250 iron for increased strength
* Design: Siamese bore construction with thick cylinder walls (approx. 0.230-inch at maximum bore)
* Main Caps: Splayed 4-bolt main caps with 180,000-210,000 psi tensile strength
* Deck Height: 9.025-inches (+0.005/-0.000)
* Bore Options: Rough bores available at 3.995-inch to 3.997-inch or 4.120-inch to 4.122-inch, with a maximum finish bore of 4.250-inches
* Capacity: Supports up to 454 cubic inches, with 4.125-inch bore capacity
* Rear Main Seal: Offered in both 1-piece and 2-piece seal designs to accommodate different rotating assembly styles

Critical features for builders:

* Clearance: Cast-in clearance for up to a 3.875-inch stroke (select models clear up to 4.000-inches)
* Oiling System: Uses a Priority Main Oiling system to ensure critical bearing surfaces receive oil first during high-RPM operation
* Component Compatibility: Accepts standard OEM-style timing covers, oil pans, mechanical oil pumps (not included)
* Machining Details: Lifter bores are machined to .8437-inches (+/- .0003-inch) and are compatible with OEM roller provisions
* Additional Provisions: Blocks include a passenger-side dipstick and are drilled and tapped for mechanical fuel pumps and clutch linkages