I guess what I meant by "can't dial it in" was as a whole assy, my bad. After the initial rebuild it's always been temperamental about starting. I've always had to pump the pedal and hold it down about 3/4 the way to start then continue to pump the pedal several times until it was able to idle itself on it's own. Now remember...this is all at it's suppose to be factory TDC timing.You say it's a TBI issue but you don't say why. You say you have to set the timing way off to get it to run right, by you don't think that's an issue? The TBI is generally extremely reliable. If you know you have a different problem fix that first before you suspect, with no evidence, that there is a TBI problem. There is basically nothing to "dial-in" on a TBI unless you need to tune the PROM, which judging by the parts on your build, you do not.
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Every sensor (O2, MAP, IAC, TPS and Air inlet Temp sensor) is brand new and I still can't get an easy start from it. I guess one could be bad.
The TBI, I purchased from someone as a rebuild. I know little about them. I'm getting about 11-12 psi coming into it and I see a nice "round" mist of fuel into each bowl after it's started and idling for a few minutes. But if I crack the throttle hard and fast it chokes itself out, I see little to no fuel dumping in as it spits and sputtering and then it'll pick up.
It seems like it's starving itself of fuel on cold starts and (once it's running) it will fall on it's face if I crack the throttle hard and sudden. Seems though it's not getting the proper fuel when it's suppose to be.
Could the Fuel regulator on the back of the TBI be bad and have anything to do with this ?
AC delco plugs are gap correctly and all show an equal amount of light brownish burn on them..appear excellent
I removed the cat, I don't see that as the problem, though it does blow out black soot onto my concrete driveway. I presume from running to rich too and no cat.
I also just read somewhere about the ECM needing reset after replacing the IAC. If that's true I have not done. I also just noticed that the plastic plug that connects into the IAC is brittle and chipped away from 2 of the 4 prongs. So I have one on order.
also from above questions:
* TDC is set true to the damper
* Has the small diameter HEI dizzy with a new external coil
* Have not put a scan tool to it (don't own one but going to buy one now). Just thought I could fix without..yeah right..lol !
* Don't believe valves are to tight, but will look into as well
* Have unplugged the tan/black wire when timing after normal operating temp.
* Will check the coil, didn't think an MSD would be bad but anything is possible.
I greatly appreciate all suggestions as it gives me things to look into.