LS7 | DEGROOTE HILL CHEVROLET BUICK GMC - Chevrolet Performance Crate Engines
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LS7

505 HP @6300 RPM
470 LB-FT TORQUE

Category:

Description

LS7 Tech Specs

  • Part Number: 19329246
  • Engine Type: LS-Series Small-Block V-8
  • Displacement (cu. in.): 427 (7.0L)
  • Bore x Stroke (in.): 4.125 x 4.000 (104.8 x 101.6mm)
  • Block (P/N 12602689): Cast-aluminum with six-bolt steel main bearing caps
  • Crankshaft (P/N 12611649): Forged steel
  • Connecting Rods (P/N 12661677): Forged titanium
  • Pistons: Hypereutectic aluminum
  • Camshaft Type (P/N 12638426): Hydraulic roller
  • Camshaft Lift (in.): .593 intake / .588 exhaust
  • Camshaft Duration (@.050 in.): 211° intake / 230° exhaust
  • Cylinder Heads (P/N 12578449): CNC ported LS7-style ports; 70-cc CNC combustion chambers
  • Valve size (in.): 2.200 titanium intake / 1.610 sodium-filled exhaust
  • Compression Ratio: 11.0:1
  • Rocker Arms: Investment-cast, roller trunnion
  • Rocker Arm Ratio: 1.8:1 (offset, intake only)
  • Recommended Fuel: Premium pump
  • Maximum rpm: 7000
  • Reluctor Wheel: 58X
  • Balanced: Internal