[QUOTE=ljgriggs]I put a 1982 Chevy 350 into a 1990 K1500 with TBI. I used an adapter plate to mount the throttle body on the stock '82 intake. I kept every electronic component including the EST distributor except for the EGR and the knock sensor.
So you kept all the components for the 1990 , correct?
The 82 distributor and esc wont co mingle well with a 90 TBI
The adapter plate thing will cause a problem for sure,as well as not being able to time it correctly.
My thoughts turned to possibly a plugged exhaust system as well.
But you should put the CORRECT INTAKE on for TBI. Also you need to be sure of the timing.
Dont sweat the knock sensor problem at the moment, but dont forget about it alltogether. If it is not hooked up it wont RETARD the timing as it only sends a signal when a spark knock occurs. The computer only retards the timing 3 degrees at a time when a knock signal occurs.