LS9 | DEGROOTE HILL CHEVROLET BUICK GMC - Chevrolet Performance Crate Engines
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LS9

638 HP @6500 RPM
604 LB-FT TORQUE

Category:

Description

LS9 Tech Specs

  • Part Number: 19260165
  • Engine Type: LS-Series Gen-IV Small-Block V-8
  • Displacement (cu. in.): 376 (6.2L)
  • Bore x Stroke (in.): 4.065 x 3.622 (103.25 x 92 mm)
  • Block: Cast-aluminum with six-bolt, cross-bolted main caps
  • Crankshaft (P/N 12641693): Forged steel with nine-bolt flange
  • Connecting Rods (P/N 12624231): Forged titanium
  • Pistons (P/N 19180414): Forged aluminum
  • Camshaft Type (P/N 12638427): Hydraulic roller
  • Valve Lift (in.): .562 intake / .558 exhaust
  • Camshaft Duration (@.050 in.): 211° intake / 230° exhaust
  • Cylinder Heads (P/N 12621774): Aluminum L92-style ports; “as cast” with 68-cc chambers
  • Valve Size (in.): 2.160 titanium intake / 1.590; hollow, sodium-filled exhaust
  • Compression Ratio: 9.1:1
  • Rocker Arms (P/N 12569167 int): Investment-cast, roller trunnion
  • Rocker Arms (P/N 10214664 exh): Investment-cast, roller trunnion
  • Rocker Arm Ratio: 1.7:1
  • Recommended Fuel: Premium pump
  • Maximum Recommended rpm: 6600
  • Reluctor Wheel: 58X
  • Balanced: Internal