Replacing cylinder heads on Chevrolet Camaro?

This is not a simple job.ts not a do it yourself type job.Its very much time consuming and quite difficult task.

Difficulty in head replacement is related to your experience level. If you only have basic skills, it's possible but very complicated. If you've done lots of repairs and possibly heads on another vehicle then it may be easier. 


Even with the repair guide this is a huge job and should not be attempted if you don't have good repair skills, allot can go wrong. A few more tips here, make sure the block is drained of coolant, lay rags in the center of the engine after the intake manifold is removed t keep from getting dirt and gasket material in the engine oil pan(it will wash down and plug the oil pump). Make sure you use only the best gaskets, I recommend factory or Fel Pro brand. Torque the heads exactly as the pattern calls for, use new head bolts always. Time to do the job about 10 hours.


But if you feel you are quite comfortable and will be able to do it.
Then no worry,here is the procedure mentioned as follows :---

Cylinder Head

REMOVAL & INSTALLATION

When servicing the engine, be absolutely sure to mark or tag vacuum hoses and wiring so that these items may be properly reconnected during installation. Also, when disconnecting fittings of metal lines (fuel, power brake vacuum), always use two flare nut (or line) wrenches. Hold the wrench on the large fitting with pressure on the wrench as if you were tightening the fitting (clockwise), THEN loosen and disconnect the smaller fitting from the larger fitting. If this is not done, damage to the line will result.

After the cylinder head(s) have been removed, refer to the cleaning and inspection procedures in the engine reconditioning section.

3.4L Engine

See Figure 1

LEFT SIDE

1. Disconnect the negative battery cable.
2. Raise and safely support the vehicle.
3. Place a drain pan under the radiator, then drain the cooling system.
4. Carefully lower the vehicle.
5. Remove the upper intake manifold.
6. Remove the rocker arm (valve) cover assemblies.
7. Remove the lower intake manifold.
8. Remove the left exhaust manifold.
9. Remove the oil level dipstick and tube assembly.
10. Remove the serpentine drive belt.
11. Detach the coolant temperature sensor connector.
12. Tag and disconnect the spark plug wires from the plugs. Remove the spark plugs.
13. Remove the engine lift bracket.
14. Remove the wiring harness clip from the rear of the cylinder head.
15. Unfasten the secondary air injection pipe bracket bolt/screw.
16. Remove the power steering pump assembly and brackets and position aside. Do NOT disconnect the power steering pump lines.
17. Loosen the rocker arms until the pushrods can be removed.
18. Unfasten the cylinder head bolts, then remove the cylinder head. Remove and discard the gasket. The cylinder head should be properly cleaned and inspected before installation. Clean the gasket mating surfaces of all components. Be careful not to nick or scratch any surfaces as this will allow leak paths. Clean the bolt threads in the cylinder block and on the head bolts. Dirt will affect bolt torque. Refer to Engine Reconditioning for further details.

To install:

19. Position the head gasket over the dowel pins with the bead up. Install the cylinder head over the dowel pins and gasket.
20. Coat the threads of the head bolts with GM 1052080 thread sealer or equivalent. Install the head bolts and tighten in sequence to 41 ft. lbs. (55 Nm). Then, tighten an additional 90 degrees ( ¹ / ₄ turn) using tool J 36660 or equivalent torque angle meter.

Fig. Fig. 1: Cylinder head bolt tightening sequence - 3.4L engine

21. Install the pushrods and rocker arms.
22. Install the power steering pump brackets.
23. Install the secondary air injection pipe bracket bolt/screw.
24. Install the spark plugs, tighten to 11 ft. lbs. (15 Nm), then connect the wires as tagged during removal.
25. Attach the wiring harness clip to the rear of the cylinder head.
26. Install the engine lift bracket.
27. Attach the coolant temperature sensor connector.
28. Install the serpentine drive belt.
29. Install the oil level dipstick and tube assembly.
30. Install the left exhaust manifold.
31. Install the lower intake manifold.
32. Install the rocker arm (valve) cover.
33. Install the upper intake manifold.
34. Fill the cooling system with the proper type and amount of coolant. Connect the negative battery cable.
35. Start the engine and check for leaks.

RIGHT SIDE

1. Disconnect the negative battery cable.
2. Raise and safely support the vehicle.
3. Place a drain pan under the radiator, then drain the cooling system.
4. Carefully lower the vehicle.
5. Remove the serpentine drive belt tensioner.
6. Remove the upper intake manifold.
7. Remove the rocker arm (valve) cover assemblies.
8. Remove the lower intake manifold.
9. Remove the right exhaust manifold.
10. Remove the alternator and brackets.
11. Tag and disconnect the spark plugs wires from the plugs, then remove the spark plugs.
12. Loosen the rocker arms until the pushrods can be removed.
13. Unfasten the cylinder head bolts, then remove the cylinder head. Remove and discard the gasket. The cylinder head should be properly cleaned and inspected before installation. Clean the gasket mating surfaces of all components. Be careful not to nick or scratch any surfaces as this will allow leak paths. Clean the bolt threads in the cylinder block and on the head bolts. Dirt will affect bolt torque. Refer to Engine Reconditioning for further details.

To install:

14. Position the head gasket over the dowel pins with the bead up. Install the cylinder head over the dowel pins and gasket.
15. Coat the threads of the head bolts with GM 1052080 thread sealer or equivalent. Install the head bolts hand-tight. Tighten the bolts in sequence to 41 ft. lbs. (55 Nm). Then, tighten them an additional 90 degrees ( ¹ / ₄turn) using tool J 36660 or equivalent torque angle meter.
16. Install the pushrods and rocker arms.
17. Install the spark plugs, tighten to 11 ft. lbs. (15 Nm), then connect the spark plugs, as tagged during removal.
18. Install the alternator and brackets.
19. Install the right exhaust manifold assembly.
20. Install the rocker arm (valve) covers.
21. Install the upper intake manifold assembly.
22. Install the serpentine drive belt assembly.
23. Fill the cooling system with the proper type and amount of coolant. Connect the negative battery cable.
24. Start the engine and check for leaks.

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