I plan to replace the valve springs and valve seals in my 2003 Z06. I will be using a Comp Cams 5642 valve spring compressor to compress the springs. I have read the service manual, read several write-ups by people who have performed this job, and watched several videos. I have not done this job myself. I have included my job plan and would appreciate the opinions of those who have performed this job. Thank you.

1. Chock front tires.
2. Blow dirt away from spark plugs and remove and number plugs.
3. Remove coil packs and valve covers.
4. Raise rear of car.
5. With transmission in 6th gear rotate rear wheel assembly until both valves on cylinder #1 are closed. This is top dead center.
6. Mark crankshaft pulley.
7. Remove rocker arm bolts, rocker arms, and rocker arm pivot support and place in appropriate location in parts tray.
8. Install Comp Cams 5462 valve spring compressor at cylinder #1, and compress valve springs.
9. Remove valve stem keys and release valve spring tension. Place valve keys in appropriate location in parts tray.
10. Remove valve spring caps and place in parts tray.
11. Remove valve springs. Remove valve stem oil seals.
12. Clean the valve stem seats.
13. Lubricate valve guides and valve stem oil seals with clean engine oil.
14. Install valve stem oil seals, using appropriate seal for intake and exhaust valves.
15. Install new valve springs.
16. Install valve spring caps.
17. Use valve spring compressor to compress valve springs.
18. Use assembly grease to hold keys in place and make sure that keys seat properly in the groove of the valve stem.
19. Carefully release the valve springs.
20. Gently tap the end of the valve stems to seat the keys.
21. Rotate rear tire assembly so that crankshaft pulley is rotated 90 degrees.
22. Repeat above procedure on cylinder #8.
23. The engine firing order is 1,8,7,2,6,5,4,3. Continue with this procedure until all valve springs and seals have been completed.
24. With cylinder #1 at TDC tighten the following rocker arm bolts:
Tighten the exhaust valve rocker arm bolts 1,2,7, and 8 to 22 lb-ft.
Tighten the intake valve rocker arm bolts 1,3,4,and 5 to 22 lb-ft.
25. Rotate the crankshaft 360 degrees. Tighten the following rocker arm bolts:
Tighten the exhaust valve rocker arm bolts 3,4,5, and 6 to 22 lb-ft.
Tighten the intake valve rocker arm bolts 2,6,7, and 8 to 22 lb-ft.
26. Install the rocker arm covers and tighten bolts to 106 lb-in.
27. Install the coil pack bracket. Apply threadlock to the bracket studs and tighten to 106 lb-in.
28. Install spark plugs with one drop of synthetic oil on threads and tighten to 11 lb-ft.
29. Install spark plug wires.