I have a th400 or possibly th475 and i asked more or less the same question and the 4L80e is apparently what these evolved to be. So that's what I'm going to down in the future.
I'll have to try that for the front seats, rewebbing.
Back seats I'm upgrading from 2 point to 3 point and going with
https://www.seatbeltplanet.com/i-30499897-1989-1991-chevy-pickup-truck-crew-cab-rear-bench-seat-belt-kit.html?q=500268
How did the hvac move up go? Seems the wires are long enough.
I'm going to do the same thing and possibly switch it do a double din down there.
I have the stock radio that works (turns on etc but no speakers connected to it so idk, plan is testing it) I'll be sure to offer it up when that...
My ps squeals at full lock i thought that was just because it's old af lol.
It could be bc it doesn't have atf in it?? Any other possible cause? Fluid is at proper level, I'll take a look at the cap and see what it says.
I just topped it off. Need to check it again as the trans line leak would have provided cover. No new spots in the driveway though!
I also wishfully topped off the wiper fluid then saw the lines Were swollen and cut lol.
No pic but i did a temp fix on the leaky ac/heat hoses. Leaky as in there was a gap between the hose and its bulkhead, allowing water into the cabin whenever it rained.
I just checked mine and dash has a light, but it's burnt out or otherwise not working. Parking brake engages and releases though. This was the first time I've used it.
Also did 4 pumps and got it started from a cold start for the first time that way. previously i dumped a bit of gas in the...