2005 Tundra Fuel Issues

2005 4.7 Tundra. At 340,000 the timing belt broke { I changed it @ 255000} smashed 2 valves and killed the head. Replaced the heads and put everything back as before. Has run great for 2500 miles and not sure what has gone wrong. The engine stalls after starting every time. If I turn on the switch and wait approx. 5 seconds to start, it doesn't stall. Upon normal acceleration the engine will stumble as if it is running out of gas. Let off and let it catch up and it will continue on. Installed new fuel pump and nothing changed. If you accelerate slowly it will run fine. Not sure what is going on ???

 

First, Welcome from LA (Lower Alabama)!

Second, you will likely get a LOT better response if you post your question in the Ask The Toyota Mechanic thread:
https://www.tundras.com/threads/ask-the-toyota-mechanic.2404/

Good Luck!

 

^^^ What he said. ^^^

Welcome and greetings from Minnesota.