1968 400" Engine

1966 Chevrolet Chevelle Base, 2D Convertible, 4.6L Eng, Automatic Trans, Trans Mfr CD PowerglideSECTION 1968 400" Engine

Disconnect negative battery cable and remove upper radiator baffle. Remove drive shaft, transmission crossmember, transmission, and flywheel. Disconnect left exhaust pipe and starter. Disconnect right hand engine mount.

NOTE: Both front and rear of engine must be raised and engine tilted to left, using left engine mount as a pivot.

Install a suitable engine support bar and place a ***I" block of wood between support bar and right rear corner of oil pan (for additional lift on right side). Raise front of engine. Do not bolt tool to engine block, engine must rock when raised. Raise right side of engine approximately 2 1/2" and insert a blocking tool between upper and lower right hand mounts. Remove engine support bar from rear of engine and remove oil pan attaching bolts and remove oil pan toward rear of engine.

NOTE: Nos. 1 and 2 connecting rod journals should be at 4 or 7 o'clock position (viewed from front of engine).
RENDER: 1.0x

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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.