In Stock NOW
World Products has made improvements to virtually every area of the New Merlin IV blocks with the goal of producing the most technically advanced and best performing iron BBC block available today!
New features include thicker main webs for increased strength and thicker cylinder walls which are nominally .310” @ 4.600 bore. INCLUDES BLOCK KIT & CAM BEARINGS
Available in 4.245, 4.495 & 4.595 bores ready to hone to
4.250, 4.500, and 4.600 bores
9.800 and 10.200 decks
Ductile Iron main caps with ARP main bolts
Steel Billet main caps with ARP main studs
Std cam journals or 55mm babbit
Std .842 lifter bores or .904
2pc or 1pc rear seals on selected blocks
Increased strength cast iron material
Thicker main Webs including front bulkhead
Increased volume priority oil main oiling system
9.800 deck blocks are clearance for 4.375 stroke
10.200 deck blocks are clearance for 4.750 stroke
Expanded water jackets for better cooling
Siamese bores for additional strength
1/2in main bolts or studs
4-bolt main mains on all 5, center 3 splayed
Uses Standard oil filter
Block comes as wet sump but can be converted to dry
Standard cam location and diameter
55mm cam bore is available with .904 lifter bores
Enough material for 60mm babbit cam bearings
Added material around lifter bore for up to .937 bushings
Includes Cam bearings, freeze plugs & dowel kit
Blocks are Shipped by Truck Freight – Contact us
