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cpperformance

CP Performance Boaters Shopping and Product Info Guide
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Engine Blocks

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Dart
Big M Cast Iron Big Block

dart big block

  • Siamesed extra-thick cylinder walls resist cracking & improve ring seal (minimum .300" thick with 4.625" bore).
  • Scalloped outer water jacket walls improve coolant flow around the cylinder barrels to equalize temperatures.
  • Standard 9.800" and extra-tall 10.200" deck heights available for stroker engines.
  • Four-bolt main bearing caps in steel or ductile iron have splayed outer bolts for extra strength.
  • Crankshaft tunnel has clearance for a 4.500" stroke crank with steel rods without grinding.
  • True "priority main" oil system lubricates the main bearings before the lifters.
  • Oil filter pad is drilled and tapped for an external oil pump.
  • Rear four-bolt cap uses standard oil pump and two-piece seal - no adapter required.
  • Lifter valley head stud bosses prevent blown head gaskets between head bolts.
  • External block machining reduces weight without sacrificing strength.
  • Mechanical fuel pump boss, clutch linkage mounts, and side and front motor mounts simplify installation in any chassis.
  • Dual oil pan bolt patterns fit standard and notched oil pans.
  • Bellhousing flange and rear main bearing are reinforced with ribs to resist cracks.

Part No. Description
825-31263444 9.800" Deck, 4.500" Bore, Steel Caps
825-31263454 10.200" Deck, 4.500" Bore, Steel Caps
825-31273334 9.800" Deck, 4.500" Bore, Ductile Caps
825-31273454 10.200" Deck, 4.250050" Bore, Ductile Caps