My 92' corvette is hard to start. It cranks for about 5 seconds befor it starts. Replaced the coil, and the ignition control module. After it starts it has a slight smell of gas for a few seconds

Hello. It seems your Camaro has either a 'loose' timing chain and /or a faulty ignition module. I recommend having the ignition module tested first before moving to more complex process of elimination. Good luck and keep me informed; if you want to.

WHAT ABOUT THE IGNITION SWITCH

Do you know anything about automotive electronic's ,serial data communication's between control module's ?
Circuit Description
When the ignition mode switch is placed in the START position, a discrete input is sent to the body control module (BCM) notifying it that engine start has been requested. The BCM then verifies that the brake pedal has been depressed with a discrete input from the brake pedal position sensor and that the key fob, with the correct code, is in the vehicle. After this information has been verified the BCM grounds the control side of the RUN/CRANK relay closing the switch side of it and allowing battery positive voltage to flow from the BATT 3 fuse through the RUN/CRANK relay switch, engine control module (ECM) fuse to the battery positive voltage side of the CRANK relay coil. The BCM also sends a high speed GMLAN message to the ECM requesting engine start. The ECM will then verify that the internal mode switch (IMS) is in Park / Neutral or the clutch pedal is fully depressed. After this has been verified the ECM then supplies 12 volts to the control circuit of the CRANK relay closing the CRANK relay switch circuit and allowing battery positive voltage to flow through the STARTER fuse, the CRANK relay switch to the S-terminal of the starter solenoid cranking the engine. Ground is supplied through the engine block.

Ignition control module in distributor cap

Sounds like the ignition module or magnetic pick up. You need to check for ignition spark.

Ignition control module or the coil connection, When the engine is cold,there is less resistance that electron needs to overcome.,Right at the location where you replaced spark plug wire where the coils sit is the ignition control module,Any poor connection in that are would result in your description.

This sounds like you may have an ignition module failing. Run it and when it dies, have some one crank it while you check for spark. If no spark is found, replace the ignition module. This piece runs about $75. Not too bad relatively. Let me know what you find.

Check for water in gas.

Sounds like no spark. Possibly bad coil or bad ignition module.