I feel him to be a good person.

[Vladv1]

Do these sentence sound natural if "to feel" here means "to think"? The examples are mine.
I feel him to be a good person. I feel him to be my pal. I feel him to be kind

 

[Tarheel]

No. Forget about using "feel" that way.

 

[emsr2d2]

Do these sentence sound natural if "to feel" here means "to think"? The examples are mine.
I feel him to be a good person.
I feel him to be my pal.
I feel him to be kind.

The problem here is that "to feel" doesn't mean "to think". It means that your intuition is telling you something. You can use "feel" if you change the rest of each sentence.
I feel like/that he's a good person.
I feel like/that he's my pal.
I feel like/that he's kind.

 

[Vladv1]

The problem here is that "to feel" doesn't mean "to think". It means that your intuition is telling you something. You can use "feel" if you change the rest of each sentence.
I feel like/that he's a good person.
I feel like/that he's my pal.
I feel like/that he's kind.

Even so, are my sentences correct grammatically?

 

[emsr2d2]

Even so, are my sentences correct grammatically?

No. They're all wrong.

 

[teechar]

I agree with @emsr2d2: the verb "feel" does not work well in such sentences.
Try the verb "consider" instead.

 

[emsr2d2]

I agree with @emsr2d2: the verb "feel" does not work well in such sentences.
Try the verb "consider" instead.

If you use "consider", you can omit "to be" in all your sentences.

I consider him a good person.
I consider him my pal.
I consider him kind.