Ok, I have a question on oil pressure. It sits at about 60 cold at idle, once warmed up, drops to a little under 10. also, i have a lifter tick, and the oil pressure seems to fluctuate with the tick. Something to be concerned about? Just wondering.
Hard telling. The truck originally came with a 302. I'm guessing she's worn, but isn't knocking as of yet. Could a worn lifter be causing the fluctuation in oil pressure?
A lifter alone may not be your problem, very possibly a worn cam lobe allowing the lifter to drop away from the oil port in the lifter bore if you know what I mean.
Might be on to something there. I'll have to put a dial indicator on it and check the lift. If that's the case, that'll give me an excuse to put a performance cam in it.
Got a spare set of heads I plan on having milled down .025 and a fresh valve job. That, along with a cam, lifters, and straight up timing gears ought to breathe some life into her. In the meantime, I'm thinking about running 20w50 in her to quiet her down till i get the money up to do it up right.
Yeah, I love those old ford F100's and when i found out it had a 400, i had to have it. Poor old girl sat for 15 years, but she fired right up after a few minutes of tinkering. Just trying to sort it out, and having fun doing it.
I bet dollars to doughnuts that the rod and main bearings are badly worn, pull the pan and pull a main cap and rod cap and looky see. If crank is not scoured (and sounds like you may be OK) .... replace the shells one at a time putting caps back as you go.
I had same deal on my 351M at 75,000 miles in 1992. Did what I described and threw in a new oil pump, buttoned her up, and in 2012 she's still running. I just was hoping to get a few months out of it.
__________________ There's 2007 and there's 1977...
... two good years for trucks ...
Tried the same thing on mine to no avail (at 75000m -ish), put rebuilt 302 heads and new cam and lifters in, but when finally got it all running the oil light would come on at round-abouts etc when in gear and foot on brake. threw in a new set of bearings and a new HV oil pump but it was worse than when I started. Even developed an intermittent knock. Had to eventually bite the bullet and rebuild from headgaskets down. BUMMER!!!
Goes good now but!
Sadly, i may have to pull the motor out if i want to change the bearings. I'm guessing the engine may have originally come out of an LTD. She's got a front sump oil pan, and what looks like a FMX, or cruise-o-matic bolted to it. Didn't the trucks come with a rear sump pan, or did some come with the front sump as well?
I'm starting to think so myself. Can't be any harder than the rebuild i just finished on my Crown Vic. Those modulars are fun without the cam holders, lol.
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.
