got a 1987 full size bronco 5.0. i burnt up the motor in the mud. found a 92 H.O. t-bird motor in the bone yard. drove it, ran great. swapped out the all the 92 H.O. parts with the stock 87 parts (lower intake,plenum, dist.) so on. harness plugged right in. also swapped out the flywheel (teeth) and the harmonic balancer (c-6 3 speed tranny) fired up, backfire, spit, miss. pulled the intake back off ,checked all vacuum lines, wires, ect. sealed back up, checked timing,compression. fired back up, same thing . when i drop it into drive it also dies, unless i feather the gas. if it gets going it runs like crap. backfire, miss, no power ect. so this is messing with me big time. the only thing bad on the 87 motor was a broke ring. i have rebuilt many a motor, and this is turning out to be a bigger pain than rebuilding the broke ass 87 motor. nothing else has changed besides the short block. WTF AM I MISSING !!!!!!! i know it's gonna be simple. BTY changed the fuel press. reg. filter and dbl. checked the pumps and lines,all fine. any thoughts,
thanks
thanks