454 HO | DEGROOTE HILL CHEVROLET BUICK GMC - Chevrolet Performance Crate Engines
Select Page

454 HO

438 HP @5300 RPM
500 LB-FT TORQUE

Category:

Description

454 HO Tech Specs

  • Part Number: 12568774
  • Engine Type: Chevy Big-Block V-8
  • Displacement (cu. in.): 454
  • Bore x Stroke (in.): 4.250 x 4.000
  • Block (P/N 19170538): Cast-iron with four-bolt main caps
  • Crankshaft (P/N 14096983): Forged steel
  • Connecting Rods (P/N 19170198): Forged steel
  • Pistons (P/N 10215228): Forged aluminum
  • Camshaft Type (P/N 24502611): Hydraulic roller
  • Camshaft Lift (in.): .510 intake / .540 exhaust
  • Camshaft Duration (@.050 in.): 211° intake / 230° exhaust
  • Cylinder Heads (P/N 12562920): Iron rectangular port; 118-cc chambers
  • Valve Size (in.): 2.190 intake / 1.880 exhaust
  • Compression Ratio: 8.75:1
  • Rocker Arms (P/N 12523976): Stamped steel
  • Rocker Arm Ratio: 1.7:1
  • Water Pump (P/N 19168606): Cast-iron, long-style
  • Flexplate (P/N 10185034): 14″
  • Recommended Fuel: Premium pump
  • Ignition Timing: 36° Total @ 4,000 rpm
  • Maximum Recommended rpm: 5500
  • Balanced: External