I found out the source of my problem. I installed the belt while the cams of both heads were locked in position with the flats up. This is the way they are shown in the GM shop manual. I found a post on the internet that described a procedure to set the pulleys on the front bank. I loosened the front bank cam pulley locks, turned the crank 360 degrees and locked the pulleys back down. It runs like a top now, no noise, vibration or hard starting. I went back to the shop manual to see if I missed something and cound not find any mention of the cams having to be set in this manner. I learned a valuable lesson about relying solely on manufacturer's documents. I still can't believe the car ran with one bank out of phase and didn't set off any codes. Thanks for your help.
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Tom
1963 Lemans -428 +.030, SD Perf KRE heads, turbo 350, 9" Ford 3:90, 11.01@121
1956 Chieftain gasser, 461 stroked 400, SD Perf ported E-heads, turbo 400, Dana 3:70 10.40@125
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