I remember that the racing for the bikes in LA would be on Sunday night, and in the valley on tuesday night. Valley guys would go down to LA, and LA guys would come out to the valley.
LAPD was pretty cool about the whole thing. They would let them run for several hours, then send the chopper over to flash the lights at then, which ment, now take it some place else..
In the valley, it was out on Glenoaks and Peoria. It was in the middle of the rock quarries. Nothing out there. One evening we were there about 1 AM when an LAPD black and white came down Glenoaks. As he crossed the intersection, there must have been 100 people standing there. They knew what was going on, but no one was shooting at anyone, so they just drove on, looking for real criminals.
Actually, that is what ended the big street racing stuff in the valley. People started to bring guns. The import car guys had their own nights, and there were reports of shootings there. Once there were guns, nobody wanted to go anymore.