V8 swap problems. Help Please!
 

First off, Hello everyone, am new to this forum. GM's rule. Now with my problem:My dad and Iput a 1988 350 cu.in. engine in his 1991 4.3 liter full size pick up. The engine is from an 88 police intercepter that had a carberator.we replaced the induction with a 350 throttle body fuel injection and 350 computer with all 350 sensors. (map sensor, idle sensor, etc.) The engine is stock except for a Comp Cams 08-300-8 cam (duration is 206 intake and 210 exhaust at .050 lift, 112 centerline, .450/.480 lift) and shorty headers with a catback exhaust. The engine runs good at high rpm but spudders at idle and skips at low speeds. Where did go wrong? Any help would be greatly appreciated!

RE: V8 swap problems. Help Please!
 

well oddly enough had the same problem a few years back come to find out just had a bad plug wire for the no. 3 cyl