Please take what I state as a helpful suggestion
I also have a 428 in my 1969 Firebird. The engine is not original to the car.
I am following your thread to learn things that may be important to know if I have to rebuild the engine again.
It is very hard to keep up with the content because some of your threads drift away from the topic of rebuilding the engine, and some are too long to stay focused.of which step was completed, and what was accomplished.
You also keep stating 1967 428 HO YK code.
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