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Re: Gremlins in my 1989 C1500 - 350 5.7
For issue #1, could be a bad ignition switch.
For issue #2, How did it run before you replaced the heads? It almost sounds like the valves are too tight. How did you adjust them? 1 turn past zero lash?
At 45-55 is when the TCC locks up. It is possible that you are having some lockup issues. This can be valve body issues or the TC itself; however, you need to figure out the rough condtion first.
//2000CAYukon
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