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Dart SHP Special High Performance Chevy Engine Blocks 31161211

Dart 31161211 - Dart SHP Special High Performance Chevy Engine Blocks

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Engine Block, Cast Iron, 4-Bolt Mains, 4.125 in. Diameter Bore, 2-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: Dart

Manufacturer's Part Number: 31161211

Part Type: Engines, Bare Blocks

Product Line: Dart SHP Special High Performance Chevy Engine Blocks

Summit Racing Part Number: DRT-31161211

Main Journal Type: 350 mains

Engine Block Style: Aftermarket

Deck Height (in): 9.025 in.

Cylinder Bore as Shipped: 4.115 in.

Cylinder Bore Diameter: 4.125 in.

Engine Block Material: Cast iron

Engine Block Weight (lbs): 175 lbs.

Main Bolt Style: 4-bolt

Main Caps Included: Yes

Main Cap Material: Ductile iron

Main Cap Fasteners Included: Yes

Main Bearings Included: No

Rear Main Seal Style: 2-piece

Finished Cylinder Bores: No

Raised Cam Location: No

Cam Bearings Included: No

Freeze Plugs Included: No

Quantity: Sold individually.

Notes: Uses 1981-85 stock style oil pan and dipstick. DRT-32210020 cam bearings are required. Block bores are 0.010 in. undersized to allow for piston set up.

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

Tool Stroker Combinations

The new Dart Special High Performance Chevy small block engines are manufactured from high-nickel iron for superior strength and feature siamese cylinders with 4.000 or 4.125 in. bore sizes. The cylinder walls are a minimum of .230 in. thick at a 4.165 in. bore. The Dart Special High Performance blocks are machined using precision, digital CNC equipment and are virtually ready to assemble right out of the box after a final cylinder hone. The decks are even and parallel within .002 in., and the lifter bores, cam, and main tunnels are finished. The Dart Special High Performance blocks are designed for compatibility with stock components, so no costly special parts are required for assembly.


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

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