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Those are as easy as they come these days.
Mark each spark plug wire with a piece of tape with the cylinder # written on it, so as not to mix up the wires.
Remove each spark plug wire by firmly grasping the wire by the boot (do not pull on the wire) and twist it back and forth a few times while pulling slowly. It should pop off without a great deal of effort. If it is seized and it breaks, you will have to replace the wire, or at the very least replace the terminals (if you can get some).
Use an air hose and blow around the base of each spark plug to dislodge any loose dirt that could fall into the cylinders (not absolutely necessary, but a good idea).
Remove each spark plug with a spark plug socket and extension and ratchet (I forget which size socket, it's either 5/8 or 13/16).
Check the gaps of each new spark plug (typically around 0.035 in).
re-install each new spark plug by hand (do not cross-thread them) and once you have ensured that the plug is threaded in properly, tighten the plug until it seats, and then tighten an additional 1/16 of a turn. Repeat this for the remaining plugs.
Re-install wires to the corresponding spark plugs.
Hi: Your Firing order for a V-8 GM Engine is 1--8--4--3--6--5--7--2--
< Back of Engine >
Front of Engine Cylindr Locations
This should get you Fixed-Up. To make sure your are starting your #1 Plug in right place on rotor = Pull Coil wire 1st so it won't start== then pull #1 Spark Plug,Then Put your index finger in the #1 Plug hole,Have Someone bump the engine around until Air is pushing your finger out==(STOP) now you are at TDC Top Dead Center ,Pull Distributor Cap off and What ever the Distributors Rotor is Pointing to Should be #1-Start #1 Wire There And Go Clockwise as I gave the Order Its Again 1--8--4--3--6--5--7--2
Hope this gets you started and set your timing and your onthe Way,PLEASE let me Know by Voting for the Quality of my Answer.
Replacing the manifold is pretty straight-foreward. Remove the bolts holding the y-pipe on that side, remove the spark plug wires, and take the bolts out that hold the manifold on. Remove the old exhaust manifold gasket, scrape any remainders off, put the bolts through the manifold, put the gasket on the bolts(keeps it in place so you're not fishing it around to get it in the right spot) and put the bolts in finger tight only. Once you have all of them in, use a torque wrench to tighten them to 132 inch/lbs. Once they are all there, you then tighten them all to 22 ft/lbs. If you hit any of your spark plugs taking it off, you may want to go ahead and replace them now. Put the spark plug wires back on, and hook up the y-pipe again.
Be certain the plugs are correct units with the proper gaps, also be certain the plug wires are fully in contact with the spark plugs. There should be a slight "snap" as the wire goes on to the plug. Also be ceratin the wires are in to the distributor too. And always check what spark plug wire goes where. This is an easy mistake to make even when we give it our full attention.
I hope this may have helped,
You aer not clear about your problem, when replacing plugs and wires all the boots need to stay in place, the larger boot goes around the spark plug, making sure the metal is secure around the tip of the plug, the oppisite end fits the distributer cap, making sure the metal at the end of the wire is securely in the hole. You said you have 3 boots, you should boots for each end of each plug wire and a plug wire for each spark plug
well you have to find out if it has spark, pull a plug wire off a plug, hold it near ground and have someone crank it if you get spark fine if not, put it back and pull the coul wire out of the center of the distributor cap, sam thing hold near a ground if you have spark fine replace the ignition rotor, if no spark contact me the procedure is way too long to type here
Also before that have someone put their ear on the fuel tank neck where you put the gas and turn on the key they should tell you they heard a buzz for about 2 seconds if nothing check the fuel cut off switch either under the carpet under the heater on the passenger side floor and push the red button down if it's up and try again the fuel pump listening thing or the switch is behind the kick panel on the passenger side right side footwell. ther is no fuse for the circuit. www.aceautomotive1.com