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mmathews
05-24-2011, 12:13 AM
Will a stock sc go 145 like the speedometer says?

XxSlowpokexX
05-24-2011, 12:22 AM
So I hear:cool::cool::cool::cool::cool::cool:

mmathews
05-24-2011, 02:14 AM
Any personal experience there? ;)

sc4u2nv
05-24-2011, 08:40 AM
I had my first 95 sc up to 140 before i decided i shouldnt be doing that down the highway. I do not know about 89-93's but they are suppose to do 145

TbirdSCFan
05-24-2011, 10:47 AM
Will a stock sc go 145 like the speedometer says? No. I've run a stock SC at the track and coming out onto a 1/4 mile back stretch with a full head of steam, it maxed out at around 120. I suppose if it were longer it might hit 125 but thats about it. :)

chadder1313
05-24-2011, 12:54 PM
I Know for a fact a slightly modded one will reach an indicated 145 MPH on the speedo.:D

rapper33142
05-24-2011, 12:58 PM
i did 134mph with my stock sc

TbirdSCFan
05-24-2011, 02:10 PM
FWIW, with my lowered frame and 50 series tires, my indicated speeds were all about 15mph faster, so my 120mph actually read 135mph. :rolleyes:

sc4u2nv
05-24-2011, 04:33 PM
FWIW, with my lowered frame and 50 series tires, my indicated speeds were all about 15mph faster, so my 120mph actually read 135mph. :rolleyes:

Also 94/95 had more power stock than 89-93

Hock
05-24-2011, 04:35 PM
Yes they will depending on how worn the engine is.

I had my first SC (a manual 90) up to 153 (according to the tach) with only a CAI and 3.27 gears. The second day I had it I know I had it at if not just over 140.

So will the first gens do it? Yes.

Now my 92 was an auto from the factory and I did a 5spd swap and found out that the stock tune for the auto EEC does have a speed limiter. Swapped that for a manual EEC and goodbye speed limiter, now I just need to find a stretch of road long enough to see what the new top speed is.

Thomas95SC
05-24-2011, 10:10 PM
About 6 yrs ago I was clocked at 136 mph in my 94 by a Jefferson County Sheriff patrol. I was playing catch up to some friends that left a few mins earlier. I caught them at a price:o.

scskydivin
05-24-2011, 10:26 PM
I have had mine up to 140 on a streatch of MO state rte 21 before I ran out of straight road, and it was still pulling, uphill! This is simply an amazing car that we have.

rzibilske77
05-24-2011, 10:33 PM
many years ago when I had my 89 manual and this was around when the time the newer tbirds had came back to production(early 2000's?)I came up on one on the interstate and he didnt like that i was going to pass him, was doing 75ish.
Needless to say I soon wiped the 120mph speedo and had what felt like another good 25mph.... Im guessing I got around him at 135ish and then just ran it out for another 5 seconds and more car lengths on him.:p

Now I have owned a 90 auto, never pushed it that hard, one of my 95 autos I did and the eec shut it down at 126mph.

lube70
05-24-2011, 11:42 PM
I have had my 95 5-speed and my bud has had his 94 5-speed to 145 on rt 81 All Ford Weekend in 2001. Car still wanted to pull and just got scary!!!

So, yes, they will do it!!!

Don

ironworker
05-25-2011, 02:09 AM
well my 95 i got it to 145 and my 89 i paged the speedo and it was bouncing at 120 and was still going and the same with my 90 sc but the car i was racing a long long time ago said he stopped at 135 and i was 2 car lenghts a head of him

it was back in 96 when i raced that guy with my 90

Regul8r
05-25-2011, 08:23 AM
There was an article one of the magazines in 1989 when the SC first came out. I think it was copied in Chargin' Thunder back in the day.

They took a group of STOCK DIRECTLY OFF THE ASSEMBLY LINE SCs to the test track and ran them WIDE OPEN!
at the start the 5-spds were topping 140 while the Autos were right under/around the 140 mark. After 500-1000 miles of break in the sticks were topping 145 while the Autos were checking in just shy of the 145 mark.
The only issues they had with the cars during this endurance testing was with the Autos. The OD was not designed to cool properly at WOT for that long, so they lost 3 of the 5 Autos during the test.

IF I had more time I could research it and find the article, I know I have it around here. But if someone else has time and reads it in the Chargin' Thunder archives you will come across it.

TbirdSCFan
05-25-2011, 11:11 AM
They took a group of STOCK DIRECTLY OFF THE ASSEMBLY LINE SCs to the test track and ran them WIDE OPEN!
at the start the 5-spds were topping 140 while the Autos were right under/around the 140 mark. After 500-1000 miles of break in the sticks were topping 145 while the Autos were checking in just shy of the 145 mark. I'd like to see that as well.

As one should be able to see, I'm a fan of the SC's ;)... HOWEVER... they are what they are. A PASSENGER car weighing in at 4000 lbs with a 6 cylinder small block engine rated at just 200hp. At the time the cars was built, that was respectable.

Here's my reality check. Supercars which cost $100K+ with engines pumping out 500-600hp struggle to hit 180. So our $25kmsrp modestly aerodynamic 4 adult holding cars get 3/4 of the way there for nothing more? :rolleyes:

PDQ SC
05-25-2011, 11:30 AM
I had a bone stock '90 that (in 1995) buried the 120 mph speedo and continued on to, what I calculated with the tach, to be in excess of 140. It was an automatic and at that speed the O.D. wanted to downshift and overrev the motor. The not so stock '90 that I have now has an aftermarket trans setup and doesn't do the downshift. I'm not sure how fast it will go but I know it's happy as a clam at over 150. Little hard on the shorts though, if ya know what I mean.:rolleyes:

Breadsax
05-25-2011, 12:12 PM
For those of us that have the 120 mph speedo, can anyone help us with estimating 130 and 140 mph by the tach? How did you calculate that? I know after I bury the needle at 120mph, I've had my upshift come on in 4th gear, shifted to 5th, and kept her going. I know that felt really fast, but I've never known how fast I've gotten it to. New brakes and tires and confidence in the suspension is a definite prerequisite, 'cause that's damn fast if you ask me ;)

David Neibert
05-25-2011, 01:40 PM
For those of us that have the 120 mph speedo, can anyone help us with estimating 130 and 140 mph by the tach? How did you calculate that? I know after I bury the needle at 120mph, I've had my upshift come on in 4th gear, shifted to 5th, and kept her going. I know that felt really fast, but I've never known how fast I've gotten it to. New brakes and tires and confidence in the suspension is a definite prerequisite, 'cause that's damn fast if you ask me ;)

Here's a calculator.

http://www.wallaceracing.com/calcmph.php

Assuming you have a stock SC with manual transmission, use the following numbers in the calculator. I don't know what ratio 5th gear is, but I don't think it matters because unless your SC is heavily modded I don't think you will have enough HP to overcome wind resistance to go any faster than you could in 4th.

tire diameter= 26.6
rear gear ratio= 2.73
4th gear trans ratio= 1.00

Just plug in this info and the rpms to calculate speed.

David

820
05-25-2011, 06:32 PM
my 94 five speed will do about 125 in third gear, about 140 in forth, and i dont know about overdrive. i backed out. i believe that at least mine will bury its speedo. hehehe.

Miller
05-25-2011, 08:18 PM
I only go around 80 then im afraid to get arrested! I waste alot of money just to say i coulllld go fast if i wanted to... ;):cool:

TinManSC92
05-25-2011, 08:49 PM
There would be NO POINT in owning one if they couldn't perform,... at least that well. ( 145)

David Neibert
05-25-2011, 11:52 PM
There would be NO POINT in owning one if they couldn't perform,... at least that well. ( 145)

I don't know about that. I've had my 91 SC since 1993 and I don't think the car has ever been over 130 mph, and that was done on the racetrack. I'm more concerned with rate of acceleration, than max MPH.

I've never really understood the reason why people are so concerned with max speed. Whats the point, when there aren't many places you can drive that fast, and when you can, it can only be sustained for very short amount of time (think seconds not minutes).

If you have a car built for max speed to compete in stuff like the Silver State Challenge or Maxton Mile, that's a whole nother thing.

David

talonhead
05-26-2011, 01:37 AM
I've my '93 5 speed from 0 up to 115 in 3rd still pulling hard (forgot to put it in 3rd at the light....oops). Can't wait until I get her back on the road with the 6 speed in her!
Mike

mmathews
05-26-2011, 02:01 AM
I was out playin the other night and at 115 the car still pulls strong. I am scared to go to max speed because i it's definately not worth it. Theres a bridge here thats 50 feet shy of a 1/4 mile. Its safe cause they cant patrol it. I was lookin at the 145 speedometer and figured someone here has tried it. Saves me $200. @ dave, i dont think its a goal for top speed. Being quick is definately more fun. I think its the temptation to see if it will. For me anyway.

BirdofPrey97
05-26-2011, 02:11 PM
I don't know about that. I'm more concerned with rate of acceleration, than max MPH.

I've never really understood the reason why people are so concerned with max speed. Whats the point, when there aren't many places you can drive that fast, and when you can, it can only be sustained for very short amount of time (think seconds not minutes).

David

I have never understood the need for drag(dress) racing. Never looked good in a dress. :p

Talk about only going fast for a few seconds......

To me top speed is more fun and sustaining it. I don't have a red hat yet, but making better plans to get it.

1/4 mile has always been whoever spent the most wins. That doesn't always mean $, but usually time at the very least.

Just my $0.02. If you get out to MT or WY there are plenty of spots to open it up and let it go. Even TX has several miles of low to non patroled roads that are fun. Not everyone gets around the country though.

BirdofPrey97
05-26-2011, 02:13 PM
For those of us that have the 120 mph speedo, can anyone help us with estimating 130 and 140 mph by the tach? How did you calculate that? I know after I bury the needle at 120mph, I've had my upshift come on in 4th gear, shifted to 5th, and kept her going. I know that felt really fast, but I've never known how fast I've gotten it to. New brakes and tires and confidence in the suspension is a definite prerequisite, 'cause that's damn fast if you ask me ;)

Get a chip and have it set at X speed to turn on the upshift light in 5th.

David Neibert
05-26-2011, 05:23 PM
I have never understood the need for drag(dress) racing. Never looked good in a dress. :p

Talk about only going fast for a few seconds......

To me top speed is more fun and sustaining it. I don't have a red hat yet, but making better plans to get it.

1/4 mile has always been whoever spent the most wins. That doesn't always mean $, but usually time at the very least.

Just my $0.02. If you get out to MT or WY there are plenty of spots to open it up and let it go. Even TX has several miles of low to non patroled roads that are fun. Not everyone gets around the country though.

Back in 2002 a few of us drove our SCs from St. Louis to Las Vegas for a meet. On the way home in Nevada or Arizona we found one of those roads like you mentioned and cruised at 120 mph for about an hour. That was fun and it wasn't really dangerous or hard on the cars.

I've also tested the limits of 3rd gear on my AOD numerous times on the highway trying to figure out why it was bogging down right at right around 100 mph. Finally figured out it was the ~~~ trans-go shift kit, shifting into OD while the lever was still in D, then quickly shifting back to third when throttle was lifted. I would usually get up to about 125 mph when doing that.

Never felt the need to go any faster, just to see how fast I could go. Back then I was also more concerned about hurting the car than getting in trouble with the law. These days the car is much better equipped to handle the speed, but now I'm not willing to risk hurting someone or getting the car impounded just to satisfy my curiosity. I scare myself enough already.

If I had built a car for max speed and could compete in something like the events I mentioned earlier...I'm sure I would feel differnt about it. If your driving a 100K mile SC with nothing but a few bolt on mods, I don't think max speed should even be attempted.

David

shoalcracker
05-26-2011, 05:58 PM
Up here, anything over 50 kms above posted (35 mph) qualifies you for a "Racing" charge.

They brought it in for the Ricers that were getting into sidewalk traffic.

If convicted car is crushed. (no buyback)

You have to pick your spots just for 100 mph.

Paul

ricardoa1
05-26-2011, 06:03 PM
I have ran the car over 125 several times when highway racing things go by too fast for me and im staring at the road I could have been going faster. I have never tried a top speed run on any of my cars. At around 135-140 things get very hairy and althought you are moving that fast I thing what if I get a flat tire right about now. I then back off. Roads Ive driven dont allow with for extended runs. East coast is infested with troopers and gets risky. Car is also old and modified scares me to go that fast. Lots of what ifs on my SC at this point. I feel more confident in a unmolested vehicle. Like doing 125-130 on a drop top stock S4 cabriolet. ;)

Mike8675309
05-26-2011, 08:44 PM
Speaking of gears... I've hit 114 in the quarter mile (120mph gauge was buried) still in 3rd gear on the 5 speed with the stock rear gears. One of my goals for the future is to attend some of the 1 mile races or longer to exercise some of the high rpm power , and the good aerodynamics of the vehicle.

XR7-4.6
05-26-2011, 11:06 PM
I've never really understood the reason why people are so concerned with max speed. Whats the point, when there aren't many places you can drive that fast, and when you can, it can only be sustained for very short amount of time (think seconds not minutes).

David

That's what mad max thought about the interceptor. Fast forward a few years later to a post apocalyptic desolate road, some weird biker dude in a top speed geared truck catches up, throws a pipe through the windsheild and causes max and the interceptor to careen off the road and get destroyed!

These are the situations to learn from:p

Young-SC-Owner
05-27-2011, 12:13 AM
Not huge on the speed factor..buried my needle a few times,

Here is a crappy vid from a few years ago....rolling down I44, not flooring it, Just rolling onto it in OD. not letting it kick into passing gear


http://www.facebook.com/video/video.php?v=173107731946





-Tony

Young-SC-Owner
05-27-2011, 12:15 AM
Here's a calculator.

http://www.wallaceracing.com/calcmph.php

Assuming you have a stock SC with manual transmission, use the following numbers in the calculator. I don't know what ratio 5th gear is, but I don't think it matters because unless your SC is heavily modded I don't think you will have enough HP to overcome wind resistance to go any faster than you could in 4th.

tire diameter= 26.6
rear gear ratio= 2.73
4th gear trans ratio= 1.00

Just plug in this info and the rpms to calculate speed.

David


Id have said "A GPS"....Hell almost everyone has a smart phone with GPS capabilities ;)

bowez
05-27-2011, 08:11 AM
With my 3.73s I have had mine to 130+. Still say 150mph is attainable.

Our .28 Cd is low.

David Neibert
05-27-2011, 10:50 AM
With my 3.73s I have had mine to 130+. Still say 150mph is attainable.

Our .28 Cd is low.

If you know the frontal area, this calculator will give you an idea of how much HP is required to run a given MPH.

http://www.wallaceracing.com/Calculate%20HP%20For%20Speed.php

David

bigpoppa822
05-27-2011, 11:06 AM
Clocked my car at 154mph on my old GPS, 1990 5 speed ~290rwhp, 3.27 gears 255/45/ZR18 drive tires.

I did it in Mexico of course :)

shoalcracker
05-27-2011, 12:11 PM
I think in 88 the Porshe 928 was 170 plus at around 340 hp.

Thinking, properly geared all the low 12 and down 1/4 milers will pull 160.

Paul

68COUGAR
05-31-2011, 02:21 AM
My '89 5-spd XR-7 was rated at either 142 or 146 (can't remember) mph, off the show room floor. With a few mods, +150 wasn't hard on the autobahn.

I hit 3rd. @ 70mph!!!

68COUGAR

neverfastenough
05-31-2011, 12:38 PM
noo speed limit on on ramps, gotta get it done quick.

http://www.youtube.com/watch?v=vafU8WNkjwo

Mike8675309
05-31-2011, 01:14 PM
if you look closely, there is a speed limit everywhere. The law usually says something like whatever is safe and reasonable. I.e. in low visibility situations, even a posted limit of 55 will get you tagged for speeding as it isn't safe to go the posted limit in limited visibility.

68COUGAR
05-31-2011, 02:08 PM
if you look closely, there is a speed limit everywhere.


Hmmmm, I don't remember there being a speed limit of any kind, on most of the autobahns in Germany, when I was stationed there.

Yes Virginia, There IS life outside of USA!!!

Mark
"Life Begins @ 150mph"

90blkbrd
06-01-2011, 09:03 AM
"Life Begins @ 150mph"

I don't even need 5th gear to do that.

BirdofPrey97
06-01-2011, 10:31 AM
I don't even need 5th gear to do that.

Right now? :D

talonhead
06-13-2011, 06:51 AM
Wonder what I could get with 1:1 4th, 0.75:1 5th and 0.50:1 6th and 2.73 rear gears.....hmmm
I've gotten to 115 in 3rd and still climbing hard.
MikeH

talonhead
07-03-2011, 07:23 PM
My wife just had a small tif. She gripes about the way I drive her H2 sometimes........Then I find out about the road racing her and her friends were doing back when our '93 5 speed was a lot younger! In 5th with the 120 speedo buried! She was tagging with her buddy who has a Vette w/ dig dash.
He said that when they ran out of road and had to shut it down they had just tipped 160! He was absolutly blown away that a V6 'Bird pushing 3900# could do that!
I've banged it from 0 to 115mph in 3rd still pulling hard.
Now that I'll have a fresher motor and another gear :) when she goes back on the road. We'll have to see how she does.
While I'm at it, I have to pull the dash to fix the other gear in the speedo, I'll put a new face on it.
I wont have to do the resistor deal as I'll be using a signal converter to retro the T56 GM signal to old Ford signal.
MikeH