to run the camaro u have to start in fifth with nitrous and there is two setups i have both one runs 5.3s the other runs 5.5s u can tell the diff in hp the faster is 666 and the slower being 720 now this is technically in a sense a glitch car based on how its set up.. for cars ive actually taking the time and tuned myself here are my times i can get pics and will try to but i honesstly dont care if u believe me.
Supra: 5.85
Pontiac GTO (newer one): 5.97
Mustang GT500 (newer one) 5.93
Subaru WRX STI: 8.13
and more i havnt played in a year thats what i can remember but i spent lots of time tuning and lots of time unlocking stage for parts u have to think practical when tuning to make a fast car sometimes its harder then u think setting proper gearing to shift fast enough and make ur car accelarate the way it should... suspension so it grabs and straightlines without wheeling.. different timing setups depending on type of forced induction.. with a turb setup u get lag retarding ur timing will spool ur turbo during shifts so that it wont lag u can also switch to a superchager for the same time increase yadda yadda i could go on all day. just put time and effort in and ull achieve fast times