Just a little annotation here for what I did to a stock Buick built motor.
Chemicals Used: Brake Clean (4) cans, Engine Degreaser (1) can, Fuel Injection Cleaner Liqui. Moly (1) can, Permatex Sensor Safe RTV gasket maker (1) tube, Rags lots of them...
Parts Used for (1) Gasket Repair: Head Gasket GM or Fel-pro Stock Style (1)
Intake Gasket w/seals Fel-pro see comments above)
Valve Cover Gasket (1)
Throttle Body Gasket (If Necessary)
Vac. Block Gasket (If Necessary)
7/16-14 Tap (Available in most parts stores but not all)
O-Rings Fuel Feed and Return (If Necessary)
ARP bolt lube and thread sealer (1) tube each, or your desired equivalent.
Process for what I had to do mostly in order...
A. Drain Radiator, remove Upper Rad. hose, all water pump hoses into intake.
1. Remove Belt and (+) Battery Cable(s) too many (-) negative connections to do that one dual posts etc.
2. Alternator Remove, Bag rear bolt, top bolt and nut, and stud, make dwg. for proper re-intstall of intercooler bracket, rad. hose bracket, etc. Keep rear (+) taped up and out of the way, put nut on stud of alt.
3. Fuel Feed and Return Lines remove, check O-rings closely.
4. Had a water temp. gauge wire run directly over intake, cut in middle for splice later and move out of way.
5. Same with oil pressure copper to plastic splice, I read oil pressure at top of turbo feed line area, above intake disconnect and move out of the way.
6. Intake Loop bracket on front stud, bag label with nut.
7. Cam Sensor Lock Tab and connector, bag tab and label, unhook wiring, same for wastegate sol., TPS sensor.
8. Drivers side lower rocker studs remove nut and clear harness tabs over stud, move harness away.
9. Spark plug wires, remove and label.
10. Coil pack and module, removed for easier access, make dwg. for wires, bag bolt and (2) nuts.
11. Unplug Fuel Inj. harness from main harness, save locking tab.
12. O2 sensor, IACV, High Temp. fan switch, A/C fan control wiring disconnect from main harness.
13. Upper Rocker studs, EGR vac. lines and EVRV disconnect and remove, box and label, dwg. if nec.
14. Vac. block if necessary, (2) bolts bag and label.
15. Throttle cable, Detent Cable, Cruise Cable Bracket, clips save, (1) nut on stud, (2) small bolts, bag and label.
16. Remove Throttle Body, (if necessary) (2) nuts, check gasket. Needed to remove to get front bolt that holds the vacuum lines in the intake. Remove intake bolt and bag and label.
17. Fuel pressure Reg. also remove for wrench access and to check O-rings.
18. Charcoal cannister vac. line remove from metal lines.
19. Heater water valve vac. line remove.
20. (2) Tensioner bolts and tensioner remove and bag.
21. Header to crossover bolts (2) remove and label and bag.
22. Header studs with A/C and Alt. brackets remove and bag, orientation dwg. if necessary.
23. A/C compressor rear mounting bolt through access. bracket, bag and label.
24. Other A/C mounting bolts bag and label, move A/C compressor and lines out of the way.
25. Accessory mounting bracket (3) bolts mark positions on dwg. label and bag.
26. Studs and nuts from header, oil dipstick mount, remove mark locations and dwg. in detail and bag.
27. HVAC hoses and T's near firewall,
28. Vacuum brake line if equipped.
29. Meal and Rubber water lines from intake and (1) bolt for bracket into intake label and bag.
30. Rear of intake harness mounting bolt, rear of drivers head cable bracket bolt, bag and label.
31. Pull the valve cover off and remove the rockers, (3) bolts label and bag.
32. Remove Intake bolts and stud and mark and label each location, clean as necessary.
33. Remove intake and clean as necessary.
34. Remove head bolts and note locations for each length etc. Not reusable if stock...
35. Pull the head off clean off old gasket areas thoroughly etc.