World Products Merlin IV Engine Blocks

Engine Block, Cast Iron, 4-Bolt Mains, 4.245 in. Diameter Bore, 2-Piece Rear Main Seal, Chevy, Big Block, Each

Main Journal Type: 454 mains

Engine Block Style: Aftermarket/OEM short deck

Deck Height (in.): 9.800 in.

Cylinder Bore as Shipped: 4.245 in.

Cylinder Bore Diameter: 4.250 in.

Maximum Bore Diameter (in.): 4.625 in.

Engine Block Material: Cast iron

Engine Block Weight (lbs): 270 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: No

Cam Bearings Included: No

Freeze Plugs Included: No

Quantity: Sold individually.

Notes: Block machined for 4.375 in. steel rod stroke clearance. Expanded water jackets for better cooling. Main, Cam and Lifters Finished to GM tolerances. Clearances need to be checked before assembly. Siamese Cylinder Bore. Requires + .300 in. tall lifter. ARP Main Cap Fasteners Included.