Im also doing a motor swap but my 5.0 is from an 88 camaro, i have it all swapped over but when i start it, itll start to idle down then die. If i feather it it misses like crazy. If i put it to the floor it pukes. It just will not stay running after it starts but when it starts it sounds nice like its firing on all 8. I have new injectors and new idle control valve but that changed nothing. Any suggestions? Please help, wanna get this bird back on the road.

 

I moved this from the thread where you posted it to its own thread because it wasn't on-topic where you posted it.

Give us some more details - what your car is, what engine it started off with, what engine you now have, what you've done during the swap, etc.