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Chevrolet Performance Small Block Bare Engine Blocks 10105123

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Engine Block, Cast Iron, 4-Bolt Mains, 4.000 in. Diameter Bore, 1-Piece Rear Main Seal, Chevy,Small Block,Each

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  • Order this item and get free delivery and handling on your entire order! Truck freight fees also waived on this item. Valid on orders shipped in the contiguous United States.

Brand: Chevrolet Performance

Manufacturer's Part Number: 10105123

Part Type: Engines, Bare Blocks

Product Line: Chevrolet Performance Small Block Bare Engine Blocks

Summit Racing Part Number: NAL-10105123

Main Journal Type: 350 mains

Engine Block Style: Stock/OEM standard deck

Deck Height (in): 9.025 in.

Cylinder Bore as Shipped: 4.000 in.

Cylinder Bore Diameter: 4.000 in.

Engine Block Material: Cast iron

Engine Block Weight (lbs): 181 lbs.

Main Bolt Style: 4-bolt

Main Caps Included: Yes

Main Cap Material: Cast iron

Main Cap Fasteners Included: Yes

Main Bearings Included: No

Rear Main Seal Style: 1-piece

Finished Cylinder Bores: Yes

Raised Cam Location: No

Cam Bearings Included: Yes

Freeze Plugs Included: Yes

Quantity: Sold individually.

In-Store Pickup: Choose In-store pick-up (OH, GA, NV) on our web site.

Tool Stroker Combinations

Chevrolet Performance small block bare engine blocks are OE-quality replacements. These engines meet current production requirements and are great for stock or mild rebuilds. They come available in different configurations, so Chevrolet Performance is sure to have a block to fit your needs.


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1 Customer Reviews for Chevrolet Performance 10105123 - Chevrolet Performance Small Block Bare Engine Blocks

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Craftsmanship isn't there

Summit RacingSummit Racing Verified Purchase

Ordered this block to replace a dead boat engine. Once I received the block I took it to my machinist for piston fit & finish. The bores are oval shaped. front-to-back have .003 clearance & top-to-bottom has .001. I'm stuck using it. Also, oil galley plugs are not installed.

2 of 2 found this review helpful.

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Reviewer: JIM from WA

Date: November 07, 2014

Ease of Installation

Some parts are not legal for sale or use in California on any pollution-controlled motor vehicles

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