But the days of the GM 3.8 V6 and the Ford pushrod 302/351 are long gone and the current offerings are fragile, too reliant on tech and expensive. All are unreliable shadows of their predecessors.

Sounds like it might have been easier to pull the motor 🤔

Not quite there but close lol. 3-1/2 hours just pulling timing chain cover off, 22 thousand bolts, water pump hoses behind alternator, motor mount center bolt hidden up under mount, oil and water all over ground, every conceivable bracket, wire, clip is connected to that front cover plus valve cover. The intake will have to come off to replace the heater hose that I had cut with a knife, broke the bypass nipple on radiator (maybe I can fix) glad I took pics! Chain from Toyota was $325, the whole package from auto zone (both chains, tensioner, followers and oil pump sprockets) $219. I can see the 11 hours flat rate to fix now I’m beat and still got to put it all back tomorrow. I watched a vid on changing the chain, looked like a piece of cake, NOT!! Ya need midget hands and good back to work on it. [/
It would have! Ow it’s back together but a scraping noise, it shut off, tried to start again (won’t) and starter won’t stop turning till key is off. Getting too old for this headache.

It's interesting when a person is loyal to a domestic company and shows that loyalty by hating that company's foreign competitors...... All the while that domestic company DOES NOT hate the foreign competition and in fact has had a business partnership with said Japanese competing company since the late 1970s. Chrysler partnered with Mitsubishi in the late 70s. They even used VW made engines in their early Omnis. Ford partnered with Mazda and GM partnered with Isuzu and even at times with Toyota, Suzuki and Korean car manufacturers. If I had the disposable income Id drive new every 2 and not have a care in the world concerning long term reliability. But the days of the GM 3.8 V6 and the Ford pushrod 302/351 are long gone and the current offerings are fragile, too reliant on tech and expensive. All are unreliable shadows of their predecessors.

It’s back to starting from zero again, I think chain jumped

Sorry to hear
Not knowing more of the details, any chance of a pinched wire, harness causing the electrical issues? Can you hhear any noise turing it by hand?

For all the Toyota quality stories I have a conflicting one. In the early 80's i had a 76 Toyota pickup with a 5 spd. After working many 60+ hour weeks we had a 4 day weekend and decided to meet some family in Tahoe. About 1/3 of the way there the tranny started growling 🤬🤬🤬. At the 1/2 way point I turned around dropping to 4th as it mad a lot less noise. eventually 3rd as we were almost home.
I pulled the trans apart and two of the bearings were toast. So on Tuesday I walk into the parts dept. at the local dealer with the bearings in a shop towel. Counter guy asks What'cha got there? I opened the towel up. He asks how may do you need? Somewhat puzzled I asked you don't even need to look them up? He replies NOPE have a butt load of them in stock, common failure. NICE!!! he than asks how many miles on it? I said ~ 72K. He says wow most don't go past 60-65.
I put it back together and sold it

But the days of the GM 3.8 V6 and the Ford pushrod 302/351 are long gone and the current offerings are fragile, too reliant on tech and expensive. All are unreliable shadows of their predecessors.

You're preaching to the choir. I have a 2010 Cummins and I am seriously considering replacing that technology laden 6.7 with a '98 or earlier 5.9 Cummins. I forget the actual statistic but the more components you have in anything, even if they are individually 98% reliable, the overall reliability of the assembly drops like a rock.