150MPH is Hell!!!!

[Z28 Drifter]

I have a 1992 camaro with 490HP to the wheels with a 335 stroker motor the fact is the car can go fast but around 150 mph the rear of the car begins to vibrate really bad to the point where I'm scared like a b*tch! What can I do to correct the problem with my car if there even is a problem is this normal, I would know because prior to this I have never been in a car going over 150mph.

[Amish_kid]

Don't drive that fast?
I mean seriously whats the sense of going 150mph your just going to end up killing someone or yourself.

[Z28 Drifter]

I cant help it, its an addiction. I got to have my fix.

[pitbullgst]

if you really have 490 hp to the wheels then it would not suck in the 1/4 mile. what are your times? have you had it dynoed? and i agree with the other guy. unless you have a landspeed strip around your area don't go that fast. research landspeed and what they do for stability at these speeds. you need suspension modifications and high speed rated tires for sure. but really it will be a waste of a life when you flip it because you hit a 2 inch dip at 150 mph even on a straightaway. do the research and be safe.

[Z28 Drifter]

My best time in the 1/4 mile was [email protected] have a spot I got to and it is pretty smooth and no one ever drives it, so

[GritMaster]

Perhaps you suck at drriving.

[TudorDrancea]

it is just like with fwd going that fat the front begins to shake beacuse the front end is lifting up off the ground, same wit you only in reverse. Going that fast aerodynamics come into play and you wwould need an actual performance oriented spoiler to keep you on the ground, but seriously dont go that fast

[clawhammer]

What other mods have you done to the car, suspension wise, tires, etc?

[Z28 Drifter]

Well the other stuff on my car isnt all that great I mean I have comp. T/A tires on the back and I have strip the car to the bone about 300 pounds of weight off of it. everything else is stock.

[SiGNAL748]

Originally Posted by Z28 Drifter

I have a 1992 camaro with 490HP to the wheels with a 335 stroker motor the fact is the car can go fast but around 150 mph the rear of the car begins to vibrate really bad to the point where I'm scared like a b*tch! What can I do to correct the problem with my car if there even is a problem is this normal, I would know because prior to this I have never been in a car going over 150mph.

LOL

[Zgringo]

As a drag racer and LSR racer your nuts it your going that fast unless there's no kids,cows or cars on the road for 3 or more miles in front of you.
As for the problem, your car is lifting it's rearend and if you go much faster you'll fly in a way you won't like. I know as I flew a Hemi powered Firebird on the Salt Flats at 297 MPH when the back end came up and flew for 800 yds. Flying's great, but the landing sucks.

[benchtest]

490 HP and 107 mph in the 1/4. Hmmm..sounds a little funny. What speedo are you using...stock one won't go that high. Are you sure it's not KPH?

[Zgringo]

Originally Posted by benchtest

490 HP and 107 mph in the 1/4. Hmmm..sounds a little funny. What speedo are you using...stock one won't go that high. Are you sure it's not KPH?

If your refering to my speedometer, I assure you it's in MPH

Albert

[benchtest]

No, I'm wondering about Drifter's speedo.

[phillyx2000]

Originally Posted by Z28 Drifter

My best time in the 1/4 mile was [email protected] have a spot I got to and it is pretty smooth and no one ever drives it, so

107.1 mph sounds right for 13.1 but you should be going alot faster then that being as my friend pushes 385 rwhp and runs 12.3 on her 02 Z28..

you should definantly be in the 11s - high 10s if you can drive good that is.. i'd go and practice on feathering the clutch etc..

and on your rear end.. maybe you should get a new rear end? and a torque arm and anything else you didn't get.. you'll need it all if you wan't your rear end to last and wan't to hook real good and stick to the ground with those #s.