Hi guys new to this forum, any update on this my son and I have been restoring a 1989. We had the head straightened and machined and a valve job done on it, reassembled the motor and are having the same issues that professerbob was having. Won't rev over 2500. changed the MAF and the TPS no vac leaks and no codes. I am going to check the grounds, but any other thoughts would be appreciated. My son is an eleventh grader in automotive tech and this has the teacher confused. Thanks
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