What caused this?

7duster4 said
It did seem like it was really bogging until I let of the gas. But as I mentioned before it was running fine until that point around 70mph then it just simply didn't want to keep going. I figured if it wasn't getting fuel the car would just quit so I slowley let off the gas. I didn't hear any kind of pinging. But once I got to the end of the strip it was fine. I guess once I let off the gas and slowed down a little fuel was able to flow into the carb easily like any other time. I should have known better to put a stock fuel pump after all the engine work that had been done. A more high performance one is definetly in the works.

Before you go blowing money on a new fuel pump, check the fuel sock in the tank.

You can put the biggest stinking fuel pump on it, like the ones on a top fuel car, but if the line has a restriction, the pump does no good. It's like trying to run a marathon breathing only through a straw, then to make matters worse, you stick a glob of gum on the end of the straw. Get the idea?

Make sure the only restriction from the tank to carb is the size of your line and not something like filters, OK. If you don't have a restriction, then go to a fuel pump. A stock pump should be able to at least handle your cars requirements at this point. I have a stock fuel pump on a 340 making about 390hp and it doesn't do what your car does. Car runs 102 mph in the 1/4 and it could use a fuel system upgrade at this point.

If your car sat for any period of time this is what the sock could look like:

Good luck and please check the simple things first.