Street racing your fave place...(in the past !)
Early '70s in SoCal one of the hot spots was the Nabisco plant in La Mirada like 'crackedback' said earlier. We'd also head out to Diamond Bar since there weren't many houses out there yet.
One of the best places to gather was York Field in Whittier - always a big presence from Big Willie and the International Brotherhood of Street Racers. Never any racing at York Field, you'd eyeball each others cars there, make your bets and head somewhere else to race.
Whittier Blvd. west of the cruising area was a good place to race too until Whittier PD got there first helicopter (don't ask me how I know).