$2,198.00
Rotating Assembly-BALANCED-496, 4.250 x 4.310, Forged Crank, H-beam, Dome 10.3
USA Performance BALANCED Rotating Assembly features 4340 forged 4.250 stroke crank, Forged 4340 H-beam rods with ARP8740 or Optional ARP2000 bolts, Forged Mahle dome pistons with 10.3-1 with 118cc chambers for normally aspirated engines. Available in numerous bore sizes for 489 cid to 496 cid. Crankshafts are forged with 4340 steel and feature multi-stage heat treatment, stress relieving, shot peening, and nitriding for superior strength and reliability. A .125 in radius is used to increase strength, so narrowed bearings must be used.

  • 4.310 bore & 4.250 stroke = 496 cid
  • 4.280 bore = 489 cid
  • Forged crankshafts by Scat
  • 6.385in 4340 forged H-beam rods by Scat
  • 850 HP w/ ARP8740 and 1200 HP w/ARP2000 rod bolts
  • Mahle forged pistons +18cc Dome = 10.3-1 with 118cc heads
  • Plasma moly file fit rings 1.5 x 1.5 x 3mm
  • King TriAcular rod & main bearings
  • Precision Balanced Internally
  • Use 396/427 unweighted flex plate & harmonic balancer

For ARP2000 Rod Bolt upgrade - Add $89 click here

Rotating Assembly-BALANCED-496, 4.250 x 4.310, Forged Crank, H-beam, Dome 10.3

Rotating Assembly-BALANCED-496, 4.250 x 4.310, Forged Crank, H-beam, Dome 10.3
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Part NumberBoreCu InC/R 118ccPiston TypePiston BrandPriceIn stockPurchase
US489+18B 4.28048910.3ForgedMahle$2,198.00Yes
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US496+18B 4.31049610.3ForgedMahle$2,198.00Yes
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This product was added to our catalog on Sunday 05 February, 2012.  
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