Umbertone

Hello All,

I am new to the site and hope you all can help me out with my current issue.

Little bit about my build
1990 GT, 306 with a 70mm turbo, tial waste gate with a 5lb spring, 340lph fuel pump, 60lb injectors GT40 heads, turbo was professional installed and the car has been tuned at a dyno shop. MSD coil with a stock distributer. Car runs really smooth Until I shift it hard into 2nd

So here is the issue. If I take it up to 5500 - 5800 rpms and shift it like a granny everything is fine. If I take it up to 5500 - 5800 rpms and shift it hard the car will loose all power and want to shut off once I bring it to a stop. I can give it a little gas but anything more than 10% throttle it will just bogg down. I actually have to shut my car off turn it back on and everything is ok. After I restart its like it never happened. this mainly will happen between 1st and 2nd, in between the shift. This makes not sense to me is why I am reaching out for help. Its either Fuel or Ignition. don't think its fuel but hell who knows. PLEASE HELP.

Chromeshadow

I'd look for a loose wire or bad ground, it could be as simple as the shock when you shift causes something to cut out briefly. Does the tachometer drop to zero? This might point to ignition. Many volt meters have a max hi-low functions, if you could monitor the alternator and the ignition voltage and the fuel pump voltage it might give you the answer.

Umbertone

I plan on driving a little bit tonight. I will see if the tachometer drops to zero and get back to you. Thanks for the information, really appreciate it.