318 2bbl won't idle without choke

The thing is;
all that sludge
plus the broken and spit out umbrella seals
are all in the oil-pick up ........... and the heat-cross-over is all coked up, and the rings are plumb wore out, with a huge taper at the top of the bore.And the lifters lost there crown decades ago. Crank end-play can probably be measured with a yard-stick, and the rods knock every morning.
On another note;
I had a 71 Demon, and when the chain jumped, the pistons in the stock engine, promptly kissed the valves.