I just redid my head and put it back on my car while tunning the car I noticed that I can't get pass 8k RPM.

Here is my set up
00 ITR
Rods n pistons Gt35 turbo 750cc injectors AEM EMS

Could this problem be with my ITR cams?
Please help

 

Could be anything.
Start by making sure the ignition timing is properly set & air fuel ratios are not too rich or lean when this issue is occuring.
Then try new plugs gapped down to the proper gap.
Then try another distributor/coil assembly etc.

 

Start at the basics, did you sync the distributor? Did you put new plugs and not properly gap them down?

 

spark gap?

 

Checked all the basics new wires new plugs gap at 20
Cap and rotor

My tuner told me he has seen this before so he replaced my ITR cams with B16 cams and now it's smooth all the way. I was able to get 396hp at 12pounds of boost on pump gas

 

that does not sound right with the cams.

 

agreed. those cams shouldn't give you any issues like that.