How do you replace head gaskets on a 91 V8 camaro 5.0 automatic?

Answer

1. disconnect battery & drain coolant
2. remove distributor, fuel injection, upper hose, misc cables & wires on top of intake manifold.
3. remove brackets that mount to intake manifold, remove valve covers.
4. remove intake manifold
5. remove spark plugs, remove exhaust manifolds
6. remove rocker arms & pushrods.
7. remove head bolts, remove heads.
8. clean & inspect block deck surface, inspect piston tops and cylinder walls, clean head bolt threads.
9. you should have heads reconditioned, and definitely resurface them.
10. install new head gaskets (right side up), put sealant on head bolt threads, install head bolts.
11. torque down head bolts in proper sequence to 60-65 ft lbs.
12. clean & install rocker arms, balls, pushrods & nuts.
13. Move #1 cylinder to TDC on the compression stroke, tighten down rockers on cylinder #1 to where the pushrod feels slight resistance from the rocker arm & lifter. Tighten down about 105 degrees (12 o'clock to 4 o'clock)
14. repeat for each cylinder in the firing order 1.8.4.3.6.5.7.2
15. install new intake gaskets, seal around the water ports with silicone, install intake manifold.
16. move motor to TDC on #1 compression stroke, install & set distributor to #1 cylinder.
17. install fuel injection, cables, hoses. fill radiator with coolant.
18. Install exhaust gaskets & manifolds, install spark plugs & wires.
19. Put some oil across rocker arms, reinstall valve covers.
20. Reinstall accessory brackets, reconnect battery.
20. Start motor & set timing. top off coolant as needed. the motor will smoke as the gaskets seal & the residual oil on the exhaust manifolds burn off.