General Engine Specifications

1984 GMC Value Van P3500, 5.7 M, Automatic, 400/M40SECTION General Engine Specifications
GENERAL ENGINE SPECIFICATIONS

Application In. (mm)
Displacement
Cubic Inches 378
Liters 6.2
Fuel System Diesel
HP @ RPM 135 @ 3600
Torque Ft. Lbs. @ RPM 240 @ 2000
Compression Ratio 21.5:1
Bore 3.97 (101)
Stroke 3.82 (97)
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.