thats only 227kmph right? i can see it
i mean my moms ford escort does 180, ive done 190 in a 4 banger fiero when i was a kid, how is 230 so far off?

 

Physics man, physics.

 

umm, I think 140 is easily possible in a '90 IROC..
maybe not COMPLETELY stock, of course...

The gauge itself goes to 145, or something.

 

there is a Motor Week video about the 87 camaro i am watching it right now that i got from a third gen site. the video says stock said it would go faster than 140mph

found the link

http://www.thirdgenracing.com/videos...7%20ASC-Z28%20((87camaro.com)).wmv

watch it 2mins :30 seconds into the video

 

A TPI will do 140mph. I have pegged the speedometer in my 92 a couple of times. With the 700r4 the speedo pegs at about 4400 rpm. It will probably do 150-155 before it runs out of steam.

 

At 140 , over 2 miles a minute, who has time to look at the tach??I could barely glance at the speedo where I was driving. I was running an LS1 Z28 who was ahead by a car, I was curious to see if I would eventually catch him on top...but didn't.
If I only had a dollar for every time I've hit 140 mph..
I can feel the steering getting light at that speed, telling me I was starting to get a little lift...I haven't pushed it to 150 yet, I know the car would do it, it could still pull a little at 140. But until I lower it 1.5" - 2" and get the suspension the way I want it, I won't.

 

So you're saying with the right gearing, my 6-speed and an L98 I'd be able to hit 150?

 

haha with your RS gears + the highass T56 gearing? Hell yeah. If you got a stealthram so you could breathe up top, you'd definately have it. I don't know...you might be geared SO high that you run out of pulling power?

Its definately possible. Well, think about it... Stealthram is suppose to give 60 horsepower... plus the 220-230 the L98 makes... that puts you at more then an LT1-powered. The T56-powered LT1's have lower rearend gears then you (3:56 or something like that, 3:23 at the highest I believe)...and I KNOW they can get up to 150/160.


Have fun. Don't kill yourself.

 

Haha thanks bro. And the highest (numerically) gear 4th gens got were 3.42's with the 6-speeds.

I just dont think a stock L98 could go it. I mean figure a 245hp car can go 140, like said above. But a 275hp car can only do 155 (4th gen). That's 30hp, I don't know if gearing would make that up.

-Rippin

 

back in one of those old mustang 5.0 vs IROC-Z road and track articles, when they tested the cars, the camaro did 149mph.

 

im looking at my may 1987 automobile magazine i could scan it if you want, top speed iroc 5.7 143mph

oh and this will rattle you too, on the opposite page (this happens to be the mag where they compare the firebird, z28, riocz,and trans am) the 5.0 firebird top speed 139 mph

 

Holy sweet jesus. Good to know.

 

ooh i do research good

 

Where did you find this? I want PROOF!!!

 

Don't remember whereat... Was just in an ad I read. Kind of like my K&N filter is suppose to give 15 horsepower.