85 Camaro misfiring BAD at WOT
 

After searching the forum for it seems like forever, I still have not fixed my problem.

The car has NO power when you mat it to the floor. It runs good at normal driving though. Here's some stats and things I've replaced.

- Mild cam install (.454 lift 216 duration)

- Headers (No O2 sensor installed yet)

- Replace: Ignition Module, Cap/Rotor, Spark Plugs, Spark Plug Wires, Fuel Filter, Timing Chain.

- 0 ohms resistance on injectors (or my multimeter isn't sensitive enough to read it)

- 11 Inches of mercury vacuum ( approx. 22 psi)

- Not sure on fuel pressure -- mechanic said it was fine

- Spark Plugs have some carbon build up, but not that much to be too concerned.

I'm completely stumped on what to do....I thought I'd be tearing up the streets back in May with this car :(