Truck is an 02 with a LS1, 243 heads, and a 214/220 cam. Running stock injectors, stock fuel pump. Yesterday i was driving and anything over slow acceleration, like part throttle or more, the rpm's would start climbing then they would stop for a second, like a stalling, then go back up again. I don't know if it would be a misfire or a fuel starvation, or what. Any help guys??

 

Check any codes and verify fuel pressure. That's what I would do.

 

I was thinking maybe my stock fuel pump is going after all these mods. It has only did it that one day though, drove it the day after and it was fine, no hiccups. And no codes either.

 

Possible throttle position sensor problem.