Check those fuel lines.

[Mr Handy]

So a few weeks ago I was driving my truck with the new 350 in and getting the "kinks" worked out and everything dialed in. On a run down the toll road she sputtered and acted like she was going to die. I dropped down from 70 to 60 and she caught back up and I made it home.
Sense then I have been running around and have not had trouble. I thought the problem could have been electrical so I invested in a better distributor and replaced/added ground straps. Everything thing ran perfect the 30 miles to my friends house.
On the way home she died on me 3 times. The third time I thought to myself, this is not electrical because I can pump the gas and it will fire and then die. it has no fuel.
I thought maybe a clogged fuel filter or a bad (new) fuel pump. I looked down and the darn rubber line has a 90* kink in it. A couple of zip ties form the tool box and I get her home without a hitch. I think I will grab a piece of hard line to make the bend so the rubber does not have the chance to kink. BTW the rubber line is about a year old so maybe its just that time.