RPM questions for Integra

hi guys,

I have a 92 acura integra, it has 251,000 miles,original clutch, no mods. One day i was racing a friend who was on a snowmobile. Through the gears I wound the engine up to about 6,000 rpm but every time I shifted the rpms would drop down to about 3,000 rpms. The engine would seem to bog down. I don't know why this is. I hit 90mph in fourth. The car seems just as fast if I wind the engine up to 4,000/4,500 Rpms. Which technique whould be better to use. When does the rev. limiter kick in on Integra GS(my car)? And could I make a civiv HB fast enough to beat a Tricked out Mustang Cobra?
A lot's there but would appreciate some help, thanks.

Yes you have a limiter. Yes you can make a hatch beat a cobra and if you actually have 251k on a stock clutch you've been driving that 251 continuously.

Thanks???

Do you know at what rpm the rev limiter kicks in? What the do mean i've been driving that 251k continously? I swear thats how many miles I have on it, it was my dads before, and my uncles before that.

get ready to get a new clutch