1963 thunderbird 390 engine replacement?
I would guess about 15, but that is just a guess.
To do one correctly as far as cleaning it up, painting, heads milled, and everything, you are looking at at least 40 hours or more typically a week maybe week and a half. That is considering hooking up all the a/c lines and getting everything ready to crank and drive.
He said engine replacement and mentioned nothing about rebuilding the engine.
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