is my engine pinging???

[CUDA JAS]

When I get on my 360, I can not get it rev over 4000 or so.

At wot the car just sort of falls over once i hits 4000.  It feels like it is running out of fuel.  When I let off on the pedal, the car picks back up.

I am concerned that this is engine ping...any thoughts.

Other than that the engine works well.

Jason

[Talkwrench]

Doing what your engine is doing you would be hearing it .. at WOT it comes on and sounds like ball bearings rattling in a can.

[Chryco Psycho]

That would be my first guess , a fuel restriction or lack of supply capability . pinging USUALLY happens at lower RPM & would not limit RPM . Pinging is similar to a tin can half full of marbles being shaken

[brads70]

Fuel pump? Fuel line size?

[Skunkworks Challenger]

Yep, valve float or fuel starvation!  PK

[PlumCraZRT]

Sounds like a lack of fuel.  I've never heard of valve float at 4000 rpm...

[Cuda54]

Do you have a stock ignition or MSD? If MSD check to see if 4000 chip is in it. The chip would set the top end RPM.

[CUDA JAS]

Thanks guys,

Sounds like he stock style fuel pump is not up to the task.

I am running a 3/8ths line from the tank to the pump.  5/16 from the pump to the carb.

Looks like I found another winter project.

Jason

[72cudamaan]

Jason, it may be a silly question, but... how is your float level?

[CUDA JAS]

Jason, it may be a silly question, but... how is your float level?

I think that is great question.

the Primary is just under the sight hole.  The secondary is just a littel bit lower.

I have tried to bring them both up a little, but any more on the primary tends to mak the idle rich, and the secondary tends to leak out the bosters.