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Dave Nova
Dave Nova, Chevrolet Technician
Category: Chevy
Satisfied Customers: 19451
Experience:  ASE Master Certification. GM World Class Certification
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How do you adjust lifters on 1976 350 chevy

Customer Question

how do you adjust lifters on 1976 350 chevy
Submitted: 8 years ago.
Category: Chevy
Expert:  Dave Nova replied 8 years ago.

STATIC ADJUSTMENT

NOTE: This procedure does not apply to 231 V-6 engines.
  1. Start engine and allow to reach normal operating temperature, then shut engine off.
  2. With engine in position to fire No. 1 cylinder, adjust the following valves: V6-229 and 262, Exhaust Nos. 1, 5 and 6; Intake Nos. 1, 2 and 3. 6-250 and 292, Exhaust Nos. 1, 3 and 5; Intake Nos. 1, 2 and 4. V8 engines, Exhaust Nos. 1, 3, 4 and 8; Intake Nos. 1, 2, 5 and 7. To properly adjust valves, tighten adjusting nut until all lash is eliminated, then tighten nut the specified additional number of turns. On V8-454 / 7.4L engine, tighten nut 3/4 additional turn from zero lash. On all others, tighten nut one full turn from zero lash.
  3. Turn crankshaft one complete revolution, which will bring engine in position to fire cylinders 4(V6) or 6(Inline 6 and V8). With engine in this position, adjust the following valves: V6-229 and 262, Exhaust Nos. 2, 3 and 4; Intake Nos. 4, 5 and 6. 6-250 and 292, Exhaust Nos. 2, 4 and 6; Intake Nos. 3, 5 and 6. V8 engines, Exhaust Nos. 2, 5, 6 and 7; Intake Nos. 3, 4, 6 and 8. When zero lash is obtained, tighten adjusting nuts as specified in step 2.

ENGINE RUNNING ADJUSTMENT

NOTE: The following procedure, performed with the engine running, should be done only in case readjustment is required.
  1. After engine has been warmed to operating temperature, remove valve cover and install a new valve cover gasket.
  2. With engine running at idle speed, back off valve rocker arm nut until rocker arm starts to clatter.
  3. Turn rocker arm nut down slowly until the clatter just stops. This is the zero lash position.
  4. Turn nut down 1/4 additional turn and pause 10 seconds until engine runs smoothly. Repeat additional 1/4 turns, pausing 10 seconds each time, until nut has been turned down the specified number of turns from the zero lash position. This preload adjustment must be done slowly to allow the lifter to adjust itself to prevent the possibility of interference between the intake valve head and top of piston, which might result in internal damage and/or bent pushrods. Noisy lifters should be replaced.

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