Hello all. Just bought a 1971 Ford Econoline e200. 97k miles on it. I've never worked much on cars so this will be my learning curve....
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If I don't know diddly about squat, I think I would advertise (Craigslist, fb marketplace) for some old-time mechanics.
I think I would probably hire them to instruct me on this engine and transmission.
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I think I might get them under my van with me on mechanics rolling creepers.
We would examine my frame, wiring, and the plumbing for brakes and fuel.
I might have them show me about changing tires using the jack and tools I always carry.
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Everything is doable.
And one thing is certain -- most of the warranty issues are handled.
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An aside:
We operate a small organic teaching farm near the outskirts of Eugene Oregon.
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About six years ago, a lunatic feral had a (1971?) similar to your rig.
Next to the last driveway -- ours -- on our dead-end road, Eric wanted to replace the tired original V-8 engine.
Accordingly, he:
* rented an engine hoist (aka 'cherry-picker') and dragged it from the rental yard to in front of our place out in the country,
* on foot.
Over the course of about a year, Eric:
* removed the V-8
* acquired a green garden-wagon
* purchased a re-build engine assembly from AutoZone
* dragged the garden-wagon several miles to the parts-house
* somehow loaded the new engine onto it
* then dragged it back to his immobile van
* on foot.
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After fussing with swapping components specific to that application, Eric:
* maneuvered the replacement engine into his van
* and returned the cherry-picker back to the rental yard
* on foot.
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And through it all, over the course of a year, none of the neighbors complained.
We were all on the edge of our seats, spectating at the spectacle.
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As far as I know, Eric is still living in his van, someplace, doing Eric.