Car wont start

The coil in the distributor is THE coil. Try replacing that coil.

try your ignitor in side the distributor take cap and rotor off and replace .

Make sure the cap/coil has a 12v input from yhe battery, it needs this 12v to create the 40,000 volts for spark.

This diagram is for 1998-1995 Chevy 6 cylinder 4.3L engines.
Your got the firing order exactly correct, at 1-6-5-4-3-2, but here's the thing to double-check:
The distributor rotation is clockwise (note badly rendered arrow in picture).





Since you probably got everything right, then you're left with really unusual/rare causes of
failure of the ignition system:
(a) rotor button misaligned/failing to make contact?
(b) rotor button not pressed onto distributor shaft far enough therefore failing to provide correct
proximity to distributor cap contacts when coil fires
(c) coil wire or contact loose/disconnected - press coil wire firmly down into distributor cap.
(d) distributor shaft of other damage caused during installation of rotor.
(e) spark plug wires defective from factory
(f) spark plugs defective from factory
(g) battery low - may need a charge to start
(h) ICM (ignition control module) failure - hook up your HEI (high energy ignition) tester, and
watch the quality of the spark on each cylinder.
(i) fuel problem? If spark is being properly delivered, its gotta be a fuel problem...
(j) distributor cap not screwed down flush to top of distributor? maybe just on one side?

Inspect the inside of the distributor cap - if there are lots of little metal bits all over the inside
of the distributor cap, then you know you have a misalignment of some type in there, and the
rotor and cap are destroying each other. normal operation will throw a quota of spark-ed off
metal bits inside the distributor cap, but since your cap is brand new, your attempts to start
the engine should have rotated the distributor so few times, you should see no metal debris.

Inspect the distributor cap contacts to see if any spark marks are more of less in the middle
of the cap's proper "contact zone". If not, you've diagnosed an internal misalignment, which
you know how to correct.

Its possible that your timing is off since you removed the head and distributor cap, and probably the timing belt. The camshaft, crankshaft and distributor need to be aligned exactly right relative to each other for the timing to be correct. The engine will not start if everythings not aligned right.

Are you sure that you set the timing correctly after you reinstalled the cylinder head?

recheck everything again. check for spark. if no spark, then your distributor is not getting power(12v). if you have spark, then check for fuel pressure. spray starting fluid in the carburator and see if it starts. if it does then your not getting fuel. if you have both then take out the distributor, put your #1 piston at TDC on the compression stroke and reinstall your distributor and try again, your timing may be off. Good luck.

1 Inspect Ignition Switch Improperly Connected or Faulty Ignition Switch. 2 Inspect Battery Battery Discharged or Faulty. 3 Inspect Battery Cable Coroded, Broken, Shorted or Poorly Connected Battery Cable. 4 Inspect Solenoid Switch Starter Solenoid Switch Faulty. 5 Inspect Starter Starter Motor Faulty. 6 Inspect Wireset Worn or Damaged Spark Plug Wires. 7 Inspect Coil -Ignition- Faulty Ignition Coil. 8 Inspect Distributor Cap Loose, Cracked or Worn Distributor Cap. 9 Inspect Spark Plug Incorrectly Gapped or Fouled Spark Plug(s). 10 Inspect Distributor Cap and Rotor Kit Loose, Cracked or Worn Distributor Cap. 11 Inspect Fuel Tank Fuel Tank Empty. 12 Inspect Carburetor Worn, Faulty or Damaged Carburetor. 13 Inspect Fuel Pump Faulty Fuel Pump.

check this,
remove a convenient spark plug, stick it on it's wire and place where you can see it, stick you finger over the spark plug hole and have a friend crank the engine, note whether the air blast and spark are the same instant if not the distributor's out of time

sounds like you haven't indexed the rotor correctly or the cap isn't seated correctly.  Did you replace the plug wires correctly?  Dis you bump the position of the distributor?

have a look at this link, it may assist you .

http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c15280051d25