The heads are an older Brodix set. They have been ported and resurfaced. After talking with you guys I think I may have been pushing the envelope on octane and timing. We were running 36 degrees of total timing. I don't know what series Brodix heads these are. According to the machine shop they were manufactured in 1980. The heads will be cc'd before they are put back on this time.

Again, any further advice or observations are welcomed..........

Thanks again
Roy