Details
These World Block and Rotating Assemblies offer race proven quality components at a greatly reduced package price. World Products blocks, forged 4340 crankshafts, H-beam rods, forged pistons and file fit rings are standard in these popular combinations. Blocks are clearanced for 4.375 stroke.
Precision Balanced
Precision Balanced
- 565 cubic inch
- 4.600 bore x 4.250 stroke
- World Merlin IV Block 8.800 deck 4.595 bore Ductile Iron 4-bolt mains
- World Products Merlin IV Block has ARP main bolts included
- 4340 Forged Crankshaft with Center Counter Weights (8CW) for better strength and balancing
- 4340 Forged 6.385 in H-beam rods w/ARP8740 bolts
- ARP8740 bolts = 900 max HP
- Optional ARP2000 bolts = 1300 max HP
- Mahle +38cc dome piston = 13.6-1
- Other compression ratios available
- File Fit ductile plasma moly rings 1.5 x 1.5 x 3mm
- King TriAcular rod & main bearings
- Precision Balanced
- Cam bearings, Freeze plugs & dowels
Other Combinations Available - Custom Assemblies our Specialty - Please Inquire
Hundreds of stroke & bore combinations available
Additional Information
| Manufacturer | USA Performance Parts |
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