Many years ago, my brother ran a B/G dragster. This was a small block Chevy, 301 inches with a 4:71 supercharger. The rail did consistant low 9's and was flawless in keeping to that pace over the few seasons he ran it. This was in the mid-60's.
However, only once did he break the 9 barrier, and hit a 8.39 ET for the 1/4 mile. This is almost a second off consistant times turned in as 9.01 to 9.20's is where this rail lived.
The weather conditions that night were ideal for this to happen, as that is the only thing I remember as to why anyone could explain why the rail performed the way it did.
My thought is that certain conditions will allow results to happen that may not normally occur with engines. Weather conditions being a prime example of having a cause/effect on results and perhaps that this is one of those reasons why results that Okies bike with his tuner occured.
I do know LA can be really hot and humid, but at other times, it can be downright cold and offer perfect opportunities to pull conditions together to allow the motor to do things it may not normally do.
Maybe the conditions were the reason for a higher than norm HP pull off the dyno, who knows.
