Merlin IV Big Block Chevy Cast Iron Engine Bare Block

Name: Merlin IV Big Block Chevy Cast Iron Engine Bare Block
Brand: WORLD PRODUCTS
SKU: 955-095110-55
Price: 5173.48 USD
Availability: InStock

^$5,173⁴⁸

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Ships on 11/05/2026

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4.495 in. Cylinder Bore

Merlin IV Cast Iron Engine Block

Big Block Chevy

2-Piece Rear Main Seal

4.495 in. Bore

10.200 in. Deck Height

55 mm Cam Journal

.904 in. Lifter Bore

Billet Splayed Main Caps

Features:

High-Density Cast Iron Construction
Priority Main Oiling
Front Oil Inlet and Restrictor Provision
Bores to 4.625 in. max
Cylinder Walls 0.310 in. @ 4.600 in. Bore
Clearance for 4.750 in. Stroke - 10.200 in. Deck
Splayed 4-Bolt Main Caps with Dowels & Stepped Register, ARP Fasteners
2-Piece Rear Main Seal
OE-style Fuel Pump & Starter Mounts
270 lbs.
55 mm cam does not require lifter bushings due to relocation of .500 oil gallery

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

Modern Advancements for a Superior Big Block Chevy

World Products has redesigned the famed Merlin Big Block Chevy casting, incorporating numerous improvements and new features, designated the Merlin IV. New features include thicker main webs and thicker cylinder walls for increased strength and durability. The Merlin IV also has an increased volume priority main oiling system with a front oil feed for dry sump systems and front oil cross over with restrictor provisions to provide racing engines with oil where they need it the most.

Part TypeEngine Block

Product LineWorld Products Big Block Chevy Merlin IV Cast Iron Engine Blocks

BrandWORLD PRODUCTS

Package Width270.0

Weight270.0 PG

Part CategoryPerformance Parts

Part FitmentSemi Universal

Vendor Part NumberWPI095110-55

Package Qty1

Package TypeEA