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Chevrolet Performance Bowtie Aluminum C5R Gen III Engine Blocks 12480030

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Engine Block, Aluminum, 6-Bolt Mains, 4.117- 4.160 in. Bore, 1-Piece Rear Main Seal, Chevy, Small Block,Each

Estimated Ship Date: 3/2/2015 (if ordered today) Would you rather pick it up? Select Location

  • 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: 12480030

Part Type: Engines, Bare Blocks

Product Line: Chevrolet Performance Bowtie Aluminum C5R Gen III Engine Blocks

Summit Racing Part Number: NAL-12480030

Main Journal Type: OEM

Engine Block Style: Stock/OEM standard deck

Deck Height (in): 9.240 in.

Cylinder Bore as Shipped: 4.117 in.

Cylinder Bore Diameter: 4.160 in.

Engine Block Material: A-356 aluminum

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

Quantity: Sold individually.

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

Tool Stroker Combinations

Chevrolet Performance Bowtie aluminum C5R Gen III engine blocks are the same blocks that were used in the LeMans 24-hour endurance racing C5R Corvettes and are intended for maximum-effort competition engines. They have the same production external dimensions and bosses; the primary difference of this block to the Gen III production blocks is the siamesed water jacket, which allows engine builders to build engines with larger bore sizes. The Chevrolet Performance Bowtie aluminum C5R Gen III engine blocks feature a cylinder deck height of 9.240 in. and use a dry, pressed-in liner similar to other GM Racing aluminum small blocks. Other features include steel billet main bearing caps, wet sump style oiling, and high-strength A356 aluminum that utilizes a modified T7 heat treatment. You are guaranteed durability, reliability, and high performance by using one of these Chevrolet Performance Bowtie aluminum C5R Gen III engine blocks.


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

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