I have a 1979 F150 4WD pickup truck with a 400 engine and automatic
transmission. Last night I was about a mile from home in pouring rain
when I drove over a small tree in the road before I had a chance to
see the damn thing. At first I didnt think anything happened except
maybe a scratch on the body which I was not too worried about since
this trucks body is pretty well shot anyhow. I just use this as a
farm truck, but it runs fairly well despite the rough shape of the
body. I think I only went 2 or 3 blocks when the transmission began
to slip and after a few more blocks it would no longer move. After the
rain let up I found a broken cooler line. I was able to patch it
together with gas line hose and with only 4 quarts of fluid I was able
to get it onto my private farm roadway, but it was jerky and I knew
the fluid was still low. Once on my roadway I let it coast downhill
as much as I could, but had to use the jerking transmission to get it
to the garage.
Since then, I have added 6 more quarts of fluid and it seems to engage
pretty well now, but I can see the fluid is still barely touching the
tip of the dipstick. (I think, since the newly poured in fluid always
gets on the dipstick and makes it hard to read). That means I poured
in 10 quarts. I just spent an hour googling the proper amount of
fluid and cant find any website that lists such an old truck. I did
see a 1998 showing it needs 13.5 quarts when the converter and lines
I dont know if it totally drained the converter, but apparently it
drained most everything.
1. What is the fluid capacity for a 79 4WD F150 pickup?
2. Would driving it dry (about 1/2 mile total) permanently damage the
3. I have heard that there is a special rubber hose needed for trans
fluid, or is a standard gasoline fuel line OK? I'll change it if
needed, and if I do change it, will all the fluid drain out of the
cooler line (not running of course).
Does anyone have an old Ford book to tell me the capacity.
I need to buy more fluid today, and not sure how much I will need.
I should note that I am not sure which transmission I have, but I
recall some parts store guy saying the 400 engines all used the same
transmission in the late 70's. Unless I got this wrong, C6 comes to
mind, and I think it says "Metric" on the pan, unless I got that
confused with my 89 Chevy car. I dont work on this stuff often enough
to rememer all of the details.
I would have thought the web would have more useful info, but it sure
dont appear to be the case.
Thanks in advance for all help.