First off thank you for your input Chuck, this is ALL new to me! My guess about the white smoke I saw before pulling over to the shoulder was because the lower rad hose literally came off and all my coolant poured out 'at speed' and hit my headers n exhaust. One reason I don't think head gasket is because the oil wasn't milky at all just black n smelled bad. Another reason is after filling it up with coolant and starting it, then driving 1 mile to exhaust shop and then another 18 miles home I saw no more white smoke coming out the exhaust. I did have a little smoke from the leaking valve covers n pan gaskets (cork) hitting exhaust. After changing valve cover gaskets (felpros) and starting to record the video in post #1 - still no white smoke out the exhaust, just a little bit from the engine bay from oil burning off the headers.
I don't think its have a bad or bent valve because the car isn't miss firing at all, she starts/runs and idles just as it did before it overheated.
I don't think its a bad or collapsed lifter because the rocker travel is all equal distances when bumping/turning over the motor n idling.
I don't think its a wiped out cam lobe because there was zero metal in my oil pan when I changed it.
Thank you to all who chime in, sharing n learning is part of the experience. Hoping its just pushrods and I'm one lucky S.O.B. Today going to measure rod thickness, then the rod hole in the heads, would like to run a 3/8th rod thickness if it will fit the champ gn1 heads. Also want to look at the rocker cups as I forgot to check for damage there.
These are the rods I'd like to get
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