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Instruction Sheets for Part Number WRL-084181-904
World Products Motown LS Iron Blocks
Engine Block, Cast Iron, Billet 4-Bolt Mains, 4.120 in. Diameter Bore, 2-Piece Rear Main Seal, Chevy, Small Block, Each
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Estimated Ship Date: Nov 30, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
084181-904
Part Type:
Product Line:
Summit Racing Part Number:
WRL-084181-904
UPC:
816642021224
Main Journal Type:
Chevy 350
Engine Block Material:
Cast iron
Engine Block Style:
Aftermarket
Engine Block Deck Height:
Tall deck
Deck Height (in.):
9.240 in.
Cylinder Bore as Shipped:
4.120 in.
Cylinder Bore Diameter:
4.000 in.
Maximum Bore Diameter (in.):
4.200
Camshaft Location:
Raised 0.134 in.
Engine Block Weight (lbs.):
190 lbs.
Main Bolt Style:
4-bolt
Main Caps Included:
Yes
Main Cap Material:
Billet steel
Main Cap Fasteners Included:
Yes
Main Bearings Included:
No
Rear Main Seal Style:
2-piece
Finished Cylinder Bores:
No
Raised Cam Location:
Yes
Cam Bearings Included:
No
Freeze Plugs Included:
No
Remanufactured:
No
Quantity:
Sold individually.
Notes:
Motown LS block with 0.904 in. lifter bores, 0.134 in. raised cam tunnel, and LS style cylinder heads.
World Products Motown LS Iron Blocks
World Products Motown LS iron blocks feature significant updates that make them more user-friendly and versatile. They allow you to utilize affordable small block components like rotating assemblies, oil pans, distributors, and accessories, while taking advantage of the LS high-flowing cylinder heads. World Motown LS iron blocks are designed to provide a lighter, stronger foundation for a less expensive engine build with an easier install--no matter what you are putting it in.
Features include:
* Lighter than an OEM LS iron block
* 9.240 in. LS deck height
* Uses high-flowing LS cylinder heads
* Standard SBC crankshafts, rods, and bearings
* Use distributor or crank trigger ignition
* LS EFI or carburetor intake
* LS and SBC-style motor mounts
* SBC-style oil pans and pumps
* SBC-style oil filter pad
* SBC bellhousing pattern
* New design priority main oiling system ensures reliable lubrication of main bearing
* Available with ductile or billet 4-bolt main caps
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Instructions & Calculators
Some parts are not legal for use in California or other states with similar laws / regulations
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