4.3 cutting out

I have an 88 4x4 blazer with a 4.3. It will start and drives fine until it's warmed up. Once it's warm it starts to cut out like the tranny is slipping or it's running out of gas. But then it's fine for another mile or so. The truck has 235000 on it and I have changed the fuel pump last fall. I put new plugs in it, however I'm thinking it could use a new set of wires cap and rotor... What more could it be? I need help from a real Motorhead!!!

Someone help me please!

Hang in there. Help is near. Give them time.
Good help is like good wine it takes time.
MT :grinno:

You have to start with the basics..spark, fuel

fails when its warm........., check the ignition module, pick up coil, and electronic spark module