X2
Random thoughts from your post...
winALDL is old school, try TunerPro RT v5 instead.
Thanks Desert! Will do when cable arrives.
Did you follow this procedure?
http://www.gmcmidwestclassics.org/Web pages/Tuning the TBI.pdf
To a tee! The problem is now we can't start the motor and get it up to operating temp to recheck base idle setting. It raced when trying to set it prior to IM gasket job.
What brand distributor, what about your coil?
Bought the reman GM one from O'Riellys. Again, started and ran prior to the gasket job. Only has about 50 miles on it. Coil is also new... Not sure on the brand... Definitely not original AC
Check all of your ground connections including the back of the head and at the T-Stat snorkel.
Just a thought. Did you put rags in the intake ports while cleaning the heads to keep debris out of the intake ports and forget to remove them? I've seen it happen.
Thought of this! Actually cleaned all the ports by hand and then with a vacuum. All clear prior to setting manifold.
Check your fuel pressure at key on, no crank s/b 11 -13 (factory says 9 - 13)
Will do this again. Checked at fuel filter change. Had 11psi at the filter.