What’s wrong with the engine?
I don't know that anything is wrong with it, per se. It's just old. Really, really old. It has about 65,000 original miles on it. Not a ton, but the miles + the years = skepticism from me.
I've owned the car since 1989. When I drove it in the early 1990s, it had tons of pop. Over time, it seemed to have lost it's pep. It sat a lot between 1995 - 2004. I had the carb worked on in ~2005, but it's never really been the same car I remember. I drove it sparingly between 2005 - 2017 and it's pretty much sat in my garage for the pas 4-5 years (which has been very hard on the car). At this point, the carb is really fouled up (stuck float, delaminated choke diaphragm). There are a number of carb rebuilders/restorers that are recommended here on the forums. So, I could always send that off to one of those good shops.
But, I'd really like to paint the engine. So, if (1) the engine is already coming out of the car, (2) it's a really old engine, and (3) I'm not thrilled with the power it seems to be producing, then maybe it's a good idea for a tear-down, clean, and rebuild? I really want it running like a factory-fresh engine.
I'm in contact with the shop recommended by bcmiller above:
https://besperformance.com/about.html. I'll be talking with him next week to see what his thoughts are.
It still looks OK ... just don't get too close or you'll find the 25 years of rock chips and such. So, I'm not in a huge hurry to repaint the car (though it needs it). I just want to really enjoy driving it again. Oh, and those tires in the pic were put on the car in 1991. So, it's probably time to replace those, too.
I think I'll either go with original D70-14 redlines (in Firestone's new bias-looking radials) or maybe the F70-14 for a bit bigger tire. I think it's wearing 215/70R14 today, which already seem like little bicycle tires to me.