I agree with PKRWUD on this one. Those are things that most people don't take into consideration. I would try that first before anything. If your timing is off even more it's gonna miss or backfire like crazy at low rpm's. Also, check the msd on that car. MSD has had some problems with that.
Eric
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68 Camaro
Gene Fulton 632ci Two stages of Jug
8.41 164mph Rockingham 1-26-03
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