Replaced plugs and gapped at .055.Runs alot better.But now when i floor it it shuts off.Seems like its running out of gas.I can let out on clutch since its already in gear and it will start right back up.Fuel pressure is at 7 psi when shuts off.Carb is edelbrock 600.I have been told it is too small and am planning on replacing with Holley 750 dp soon.Could carb be primary problem.Thanks for advice on plugs.