Tonight I was with an Old friend whippen around. I was reved it up to around 6k (no tach yet) a few times. The oil is only 2k miles old and EVERY fluid was changed recently with synthetic (dif tranny ect) along with wheel bearings and brakes.

Is this bad for my baby :X

its bad if you do it alot but here and there its not too bad. just try not to do that alot

its bad if you do it alot but here and there its not too bad. just try not to do that alot
Yeah I dont really plan on doing it like that again. Ever since I changed gas stations ive been noticing better performance.

You can rev it till you hit the rev limiter at about 6200rpm.You'll know when you do. May or may not break anything, kinda depends on mileage and overall condition. Not a good idea with a beat up old timing belt 'cause they come apart and leave you on foot. Get a tach real soon.

Considering you're making less power past 5000 RPMs (and you DO NOT have a tach) no, I wouldn't suggest it. Definitely not a good idea even with a rev limiter, as it was suggested, stressed parts can still fail at a higher RPM where they normally might not.