Well, I finally got my old 1977 F-150 running again. There were some leaves and such in the carb from sitting. When it's running it sounds like its knocking or something like that.. but I'm thinking it's just the rocker's or something? Do those need to be adjusted sometimes or anything?

If they're stock, no. How did you determine it was the top end and is it more of a knock, tap or chatter? If it is in fact the top end and a knock, my money says a bad valve.

A colapsed lifter could make a tapping too.

UTfball68 said:

If they're stock, no. How did you determine it was the top end? If it is in fact the top end, my money says a bad valve.

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surewhynot said:

A colapsed lifter could make a tapping too.

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It's loudest next to the valve covers, so I just figured it's the top end.

Just found something very odd aboout my 400 today. It has two engine oil dipsticks! One on the passenger side, and the other on the drivers side. Why? lol!

CDF302V8 said:

When it's running it sounds like its knocking or something like that..

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Open the hood and let your sister's cat out. That should fix the knock.

austin26372 said:

Open the hood and let your sister's cat out. That should fix the knock.

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Haha, that would work...if I had a sister.

CDF302V8 said:

...if I had a sis.

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That you knew about...

CDF302V8 said:

Just found something very odd aboout my 400 today. It has two engine oil dipsticks! One on the passenger side, and the other on the drivers side. Why? lol!

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Hmmm...possible you have a 400 out of a car. Is the PS hole plugged at the oil pan or do you still have a full functioning dip stick?

UTfball68 said:

Hmmm...possible you have a 400 out of a car. Is the PS hole plugged at the oil pan or do you still have a full functioning dip stick?

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It's a full functioning dip stick.

CDF302V8 said:

It's a full functioning dip stick.

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Interesting...wonder why someone would do that. The car dipsticks came out the front anyway. Does it look like a PO drilled and tapped it?

UTfball68 said:

Interesting...wonder why someone would do that. The car dipsticks came out the front anyway. Does it look like a PO drilled and tapped it?

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Actually I dont know. I didnt look at it too close. But it sure is odd!

I guess he wanted to be very sure the oil was always topped off.

Sounds like it is a 400 out of a car, but with a truck oil pan. The 400 in my scout came out of a Lincoln. It has the dipstick that goes in the front of the engine for the car oil pan (front sump). The truck oil pan (rear sump) has a dipstick that goes directly into the pan.

surewhynot said:

Sounds like it is a 400 out of a car, but with a truck oil pan. The 400 in my scout came out of a Lincoln. It has the dipstick that goes in the front of the engine for the car oil pan (front sump). The truck oil pan (rear sump) has a dipstick that goes directly into the pan.

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That's what I was thinking too, but then he said it came out of both SIDES.

How much oil pressure do the 400's usually have?

CDF302V8 said:

How much oil pressure do the 400's usually have?

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Depends...they've been known to run as low as 5psi at hot idle (the old 351M I had ran at 7psi at idle). Red has 65psi at start up but usually settles somewhere around 32psi hot idle. This is running Shell Rotella 15w40. From hot idle, rule of thumb is an increase of 10psi per 1000rpm. A bandaid to raise psi is run 50w.

UTfball68 said:

Depends...they've been known to run as low as 5psi at hot idle (the old 351M I had ran at 7psi at idle). Red has 65psi at start up but usually settles somewhere around 32psi hot idle. This is running Shell Rotella 15w40. From hot idle, rule of thumb is an increase of 10psi per 1000rpm. A bandaid to raise psi is run 50w.

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Okay, I was just wondering, becuase when my 400 gets warmed up, the oil pressure drops alot.

CDF302V8 said:

Okay, I was just wondering, becuase when my 400 gets warmed up, the oil pressure drops alot.

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If you're going off the stock dummy gauge, stop what you're doing run to the nearest parts store, spend $30 on a Sun Pro oil psi gauge and go from there.

UTfball68 said:

If you're going off the stock dummy gauge, stop what you're doing run to the nearest parts store, spend $30 on a Sun Pro oil psi gauge and go from there.

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The "dummy" gauge is the light, right?