WP095010-55 - WORLD ENGINE BARE BLOCK MERLIN IV BB CHEV IRON BLO

WORLD PRODUCTS BBC Merlin IV Cast Iron Engine Block Chevy Big Block, 9.800Deck, 4.495 Bore. 55mm Cam, .904 Lifters, Billet Steel Caps 095010-55

World Products has redesigned the famed Merlin Big block Chevy casting, incorporating numerous improvements and new features. Designated the Merlin IV, this new block is sure to be a favorite among racers and professional engine builders.

New features include thicker min webs for increased strength cylinder walls which are nominally .310 @ 4.600. The oil system is revised with enlarged passages and cross overs in front, uses simple pipe plug type restrictors, .500 oil gallery is relocated so 55mm cam does not require lifter bushings. The block will accept cam journals up to 2.480 or 60mm Babbit and 1.060 lifter bores. Also new are deck heights from 9.500 to 9.850 and 10.200 to 10.250.

TECHNICAL INFORMATION:

• Material: High Density Cast Iron
• Deck Height: 9.800
• Deck Thickness: .600 minimum
• Cam Bearings: 2.283 journal bore, # GMP55T
• Main Bearings: Standard Chevrolet
• Camshaft Location: Stock
• Lifter Bores: .904 bore requires +.300 tall lifters
• Bore: 4.495
• Maximum Bore: 4.625
• Cylinder Wall Thickness: .310 at 4.600 bore
• Water Jackets: Expanded for better cooling
• Lubrication: Priority main oiling system
• Filtration: Integral mount for spin-on filter
• Oil Pan Rails: Solid (stock width)
• Crank Clearance: 9.800 4.375 stroke, 10.200 4.750 stroke.
• Main Caps: 4-bolts splayed, stepped registers w/ ring dowels, nodular iron or billet steel
• Fuel Pump: OEM mount
• Starter: OEM mount
• Motor Mounts: Dual (front and side)
• Cylinder Head Holes: Blind tapped to prevent leaks
• Weight: Approximately 270 lbs.
• Oil Restrictors: BMP 701804-2 in the front of the block
• Inner Lifter Valley Extra Head Bolts BMP 701302
• Dowel and Plug Kit: BMP 703892B-2K
• Rear Seal: FEL2904