1990 K1500 TBI with 1982 chevy 350 no power
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. The knock sensor did not work on the old engine and it had more power than this engine does. the engine that I put in had been rebuilt recently. The problem that I am having is when the throttle is opened quickly (such as stomping on the gas) the engine cuts out for a few seconds then picks back up but there is no power going down the road. The old engine was in bad shape and this new engine is in great shape but the old engine had more power than the new one. Things arent adding up for me so any advice would be greatly appreciated.
PS: Timing bracket is not on the timing cover and timing was set by ear and the idle is smooth as silk.