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4.245 in. Cylinder Bore
Merlin IV Cast Iron Engine BlockBig Block Chevy 2-Piece Rear Main Seal 4.245" Bore 10.200" "Tall" Deck Height Standard BBC Camshaft Bearing Journal Standard BBC Lifter Bore Nodular Iron 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
- Valley Accommodates OE Roller Lifters or Use +.300 in. Tall Aftermarket Lifters
- Clearance for 4.375 in. Stroke - 9.800 in. Deck
- Splayed 4-Bolt Main Caps with Dowels & Stepped Register, ARP Fasteners
- 2-Piece Rear Main Seal
- Accepts Standard Big Block Chevy Components
- OE-style Fuel Pump & Starter Mounts
- Approximately 270 lbs
- Rated to 1000+ Horsepower
Part TypeEngine Block
BrandWORLD PRODUCTS
Package Width270.0
Weight270.0 PG
Part CategoryPerformance Parts
Maximum Bore Diameter4.625 in (117.475 mm)
Engine Block Weight (Lbs.)260
Part FitmentSemi Universal
Deck Height10.2 in (259.08 mm)
ToolStroker Combinations
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations


![Block-to-Bellhousing Dowel Pins [2 1/4 in. x .625 in.]](https://www.jegs.com/images/mini_200/500/555/555-22005.jpg)

