[Dark_5.0]

Well considering I raced the hell out of that engine on 87 octane and never had an issue one in 3 years I would say it was running fine. Mid 12's @108 mph. It would start to detonate at 16 degrees of initial timing with 87 octane.

I ran 93 octane and bumped the timing as high as 18 degrees initial but it ran the fastest at 14 degrees and 87 octane.

I tweeked it out over the course of a couple hundred 1/4 mile runs.

It could have something to do with the crappy air where I am at.

3000-5700 ft density altitude.