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The auto doesn't start off in 2nd gear.
Elevation is important, the PCM/TCM is far more advanced than what is in your son's car. Your new Camaro has a Barometric pressure sensor, your son's car doesn't.
Another thing that is HUGE is fuel, what octane fuel are you using, and what is your son using? The knock sensors on your car are WAY more sensitive than what he has. Your car will spark knock 6 degrees with a quick snap of the throttle on 87 octane, your sons will not.
Also, if your son's car has 325 rwhp, it isn't stock. Your car is stock which we are seeing 325-345 rwhp in stock form due to drivetrain loss, the LS1 Transam was underrated hp wise and made more stock, but should have been around 300 rwhp(is your son's car modded?). Your car weighs a few hundred more lbs than his.
Is your son's car a stick or auto? Maybe he is getting better at shifting if it is a stick if this is the case?
Ok, I can literally go on forever here, but I really should stop now, far too many variables to this conclusion. Bring me your car and I guarrantee you will win after, lol, but seriously, answer those questions and maybe something can come from them. Some cars are faster than others, what I have never heard of is a stock LS2 GTO pulling away from a stock 02 Transam by 4 car lenghts, that don't happen around here, usually the Transam has a better shot at that one, but again too many variables.
Start modding, and you will get consistant once you are tuned in.
But, it doesn't hurt to get things checked out first, so dynoing your car isn't a bad idea either.
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