Cat-back 92 RS LO3 M6. What could she hit? The speed limiter is bypassed. I searched but only found people telling each other about the governor. Thanks

-Rippin

 

with the LO3 the gearing will nto make a diffrence, you will run out of HP before you run out of gear. i would guess probably int he mid 130-140 range, i would bet the power to get to 150 is not there.

of course all of that is assuming you have tires designed to go that fast, on the 15" tires, i am putting my money on tread seperation about 125. so be carefull and don't push it beyond what your tires can handle.

 

Ohh *** and PLEASE tell me you take it out on a safe back road at 2am and you have suspension mods.

Mine starts shaking at certain speeds. NJ speeder yelled at me a long time ago for posting how fast I was going on a certain road.

 

Well my auto, even though its really hard to get a good idea of how it would pull at speed if you could actually accel in 4th, 91 rs, with the stock 2.73's seems to pull pretty strong the few times i have buried the needle. Now i was maybe doing 120 (can't tell since the speedo stops at 110), but i would thing 130 with and auto and enough room is possible and with a stick, i would say maybe 140 or so. Just make sure you have the tires for it, your drive shaft is well balanced, and that your suspesion is in good shape. If possible, find a track to do it on instead of a high way, but if you should do the 2am run, make sure you know the road well and get as far away from the on ramps as possible.

 

pending suspension it will do 140 but. i was able to do 145 in mine on autobahn 7 in germany with taller gears a whole lot of mods. so the 2.73 will help achieve top speed but suck off the start.

 

I had my old 305 w/ t-56 at about 135mph with 3.73s, give or take. Of course the stupid speedo at the time only went to 115, but thankfully winaldl looks past that.
Also word to the wise- tested the new engine and pegged the speedo....the next day it busted (the speedo that is )....must be from over stressing the spring....

Also, this was done on a country road, well paved, and maybe 3 houses over a 2 mile stretch. I personally do not recommend testing your top speed, as the car becomes very "light" up front, braking is critical, and if they are not perfect, will cause you pull to one side. The suspension also "floats" over the slightest hill. Not worth it imo.
Why did I do it? With the 305, I was still new to the whole sports car thing...didn't know better. With the 383, I had some mustang boys talkin trash about their top speed and fell to peer pressure. As I look back though, it was a bad decision and put all my hard work at risk and more importantly my life. I know, I know, I sound like a big whimp or what ever, but do remember the newest of our cars is 12 years old, and from personal experiance, many things can go wrong or wear out at the worst time.
There are caculations in the tech articles that will calculate your potential top speed as well.

 

Are you sure you guys have a T56 and not a T5? Reverse soes not count as a gear, so you have a 5 speed, the T56 is a 6 speed.
Also, considering that the T56 was introduced into 4th gens, it cost about 2500-3000 bucks for a full swap, and few people on the boards have done the T56 swap?

 

Are you talkin' to me? huh? Well are ya? lol just joking around.

Yes I have a six speed, and yes it was very expensive...actually the swap cost me what the car did. Unfortuantly I did not add up all of the costs when I started the swap, and was in over my head for a little while. The big killers besides the tranny itself were the clutch and spohn crossmember w/ adjustable torque arm. But I finally got it done at one point and couldn't be happier. The .5 over drive is nice as well (I have a '94 tranny). I'm pretty sure my 383 would have went through numerous T-5s by now, well if I would have continuosly replaced it with stock specs that is.

 

And all this time I was telling people I had a 6 speed

 

I bought a used chip from a guy that was a Jet Stage II. The car has about 185K miles on it.

I went to visit a friend in Springfield IL, took my wife's car ('93 MX6) there to replace a CV boot. Then later that night, my wife met me there with my '92.

The day we left, on a nice flat country road I was ahead of her and had it floored for about 2 miles. Of course my speedo only goes to 110, but hers goes to 140.

We got to a stop sign and she pulled up next to me and said "I was going 120 and not catching up to you at all."

I was surprised as hell. I had that chip for about 2 yrs and never knew it bypassed the speed govenor. Probably better I didn't know.

That was with the stock 2.73 rear end, and no engine mods at all.

 

the stage II chip really bypasses the speed govenor?? i thought i was going to have to hack through my wires and install a switch to bypass it.

 

Mine did. That doesn't mean they haven't changed that since then.

 

I have a Jet stage II that I bought for my L03 and I think it moved the speed limiter from 108 to 115mph for me. I bought it about ohh 1 year ago? With the stock chip it would shut down just before 110, then with the Jet it would go a little past 110 and shut down every time.

From what I've heard, JET will remove the speed limiter if you ask them.