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No need for hi volume oil pump for normal driving. Oil pumps are the most lubricated part in the engine. A regular replacement would be fine, doubt the old one is bad unless it sucked in some junk. Try some heavier oil as temporary. Maybe do a full rebuild over winter. Don't buy parts ahead of what is needed by machine shop/rebuilder. Rubber core plugs can be a life saver but should be considered as a temp fix. OT but, there was an old man in my hometown, when I was a kid in the 50's, he drove a Model T roadster pickup that looked new. My Grandfather told me he put it away every winter and pulled the engine to get it ready for summer. A bit extreme for dent side era, but maybe once every 45 or 50 years for a tear down sounds about right.
When you pull an engine with high miles and age, the snowball effect is very difficult to avoid and starts a chain reaction of sometimes frustrating and costly events. DON'T PULL IT until you are prepared financially and mentally for the total rebuild.
Reminds me of the time I pulled my 1970 Ram Air IV GTO in the garage for a tuneup and brakes. As a result of said snowball effect, I had the body off the frame a few weeks later, followed by a full concours nut-and-bolt restoration. Car won Concours Best Restored at 2013 GTOAA Nationals, ended up in a few magazines, etc. And it all started with a brake job and tune-up...
No need for hi volume oil pump for normal driving. Oil pumps are the most lubricated part in the engine. A regular replacement would be fine, doubt the old one is bad unless it sucked in some junk. Try some heavier oil as temporary. Maybe do a full rebuild over winter. Don't buy parts ahead of what is needed by machine shop/rebuilder. Rubber core plugs can be a life saver but should be considered as a temp fix. OT but, there was an old man in my hometown, when I was a kid in the 50's, he drove a Model T roadster pickup that looked new. My Grandfather told me he put it away every winter and pulled the engine to get it ready for summer. A bit extreme for dent side era, but maybe once every 45 or 50 years for a tear down sounds about right.
I agree 100% on the oil pump in the case of a stock motor but if you add any additional oil volume like an external oil cooler, larger volume oil pan, or externally mounted double oil filter etc. then an HV oil pump is needed. So if you have future plans for any of these now's the time to do it. On a working truck these add-ons are almost a requirement if you want your motor to last.
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.