Well i'm back, ok this is the situation now. We are getting alot of poping out the exhaust. It's dying @ 2500rpm's and we are not running the msd anymore. We bought a new carb it's a Holley 850 double pump, just curious what jets would be best for this engine., and how much fuel pressure. Right now we are running 83 in the front and 80's in the rear with 8psi of fuel pressure. It's starts and idols perfect, but as soon as we get in it after about 2500rpms it just pops and dies. Once again we are going crazy with this. Please any help would be greatly appreciated. Thanks again.