Ok I'm about outta ideas, and need some help. I recently transplanted a 98 350 into my 95 K1500 TBI. I bought the GMPP manifold for the TBI Vortec heads combo. I have transfered all the sensors from the old motor. The only thing not changed is the dist gear, hall sensor cap rotor wires all new. Here is the issue. IF I set the timing at the factory 0 degrees( with the timing lead disconnected), it runs like crap, hesitation popping no power, but if I set the timing at 6-8 BTC she comes to life, BUT will not crank when hot. Granted the issue lies in the electronic spark control I have a 16197427 ecu. I was led to believe that there was also a seperate Spak Control Module.....after crawilng around the truck for 2 hours I believe this is NOT the case and the spark control is handled in the ECU, which I am getting ready to replace. Does anybody have any other experience with this issue????