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streeter69
05-07-2005, 23:36
I went out in in the desert to see what my car would do;Q I only pulled 121mph in 5th gear at about 3500 rpm and 135-136 at about 5800 rpm in 4th gear. I guess I need more horsepower;W and better airflow;e

michael t
05-08-2005, 18:08
What kind of car and were did the MPH come from.

streeter69
05-09-2005, 05:38
I have an 02 mustang gt. I went to a USAS race. I need more speed, waiting till mid June for a new computer tweeker to be released.

CZ-75A
05-09-2005, 10:42
Originally posted by streeter69
I have an 02 mustang gt. I went to a USAS race. I need more speed, waiting till mid June for a new computer tweeker to be released.

My old Integra indicated 135 once. You definitely need more power.

Ron3
05-09-2005, 21:08
You stock?

Ron3

walkin' trails
05-09-2005, 21:26
It ain't gonna pull very strong in overdrive unless you've got some stiffer gears in the rear end and probably some cam and intake. I had a '92 LX 5.0 with a five speed and 308s in the differential. It was mostly stock other than JBA 1 1/2 inche headers, Flowmaster cat-back exhaust, K&N filter, and bumped up timing (what we did with a ten dollar distributor wrench and timing light when we still had distributors-worked the same as the chips today). In 4th it would wind up to a little over 140. I don't remember what it would do in 5th, probably because when I saw that it wasn't winding very hard in overdrive, I dropped it back down and stomped on it. Though it has more horsepower, 4.6 motor in the 02 probably isn't running any more torque than an old 302 HO. Check what rear gears you have and consider 355s or 373s. That might make a little bit of a difference. Won't help gas milege much, but will put the rpms in a much more usable range in fifth. Headers, exhaust, and a K&N type air filter will help also. Put some good synthetic oil in the crankcase and gear box. Ohh I miss my Mustang...

RT

Ron3
05-09-2005, 21:51
Thats about right. I had my old 5.0 (Stock long block) up to 140mph in 5th and it was still climbing but barely. At that time it had 3.73 gears. I think it was turning about 4400rpm at that speed but it's hard to remember.

Anything over 120 and handling got real scarry!

Ron3

streeter69
05-10-2005, 05:42
Originally posted by Ron3
You stock?

Ron3

Basically, I have magnaflow cat back, C&L plenum, synthetic oil in motor, tranny, diff and P/S system (damn, amsoil is expensive). Next round of mods should be and Xcalibrator2, SCT 90mm maf, Demolet cold air tube.
I am trying to find an 02 and up explorer block so I can rebuild it over the next winter:)

Ron3
05-10-2005, 18:10
You'd love a set of Motorsport gears! 3.73's would make your car feel 500lbs lighter.

I don't think enlarging your mass air meter will give you any more power. JMHO.

Mustangs sure are fun!

Ron3

streeter69
05-10-2005, 18:43
Ron, yes very true the 90mm maf and cold air will maybe help 3-4 hp but when I blow up this motor and build one to hold upto a KB blower it will help alot more.

I am either thinking of 3.55 or 3.73 (3.27 stock) gears, as I am for all out speed events;f

Staying N/A takes alot of money for little gains:( BUT they are gains never the less:)

Ron3
05-11-2005, 19:10
Originally posted by streeter69
Ron, yes very true the 90mm maf and cold air will maybe help 3-4 hp but when I blow up this motor and build one to hold upto a KB blower it will help alot more.

I am either thinking of 3.55 or 3.73 (3.27 stock) gears, as I am for all out speed events;f

Staying N/A takes alot of money for little gains:( BUT they are gains never the less:)

Sounds like you know what your doing!:cool:

Ron3

streeter69
05-15-2005, 07:16
I can not wait till my buddy opens his shop. I can get some dyno time:drool:

45acp4me
05-15-2005, 18:28
Originally posted by streeter69
Basically, I have magnaflow cat back, C&L plenum, synthetic oil in motor, tranny, diff and P/S system (damn, amsoil is expensive). Next round of mods should be and Xcalibrator2, SCT 90mm maf, Demolet cold air tube.
I am trying to find an 02 and up explorer block so I can rebuild it over the next winter:)

walkin' trails is right, I'd skip any more power adders until you get a decent rear end in that thing. Guys that do lapping days with the Mustang seem to really like the 3.73's and they are a good comprimise between speed and driveability on the street.

Regards,
Glen

p01ic3m4n
05-16-2005, 20:59
Originally posted by streeter69

I am either thinking of 3.55 or 3.73 (3.27 stock) gears, as I am for all out speed events;f

Staying N/A takes alot of money for little gains:( BUT they are gains never the less:)

seems like you're going the wrong way with the gears looking for top speed. the last police car i drove would do 155mph on 3.23s. if you're looking for top speed, 3.73s are going to lower that quite a bit over 3.27s. is your car auto or stick? a different torque converter in an auto might help push out a little more on the tranny toward whatever end of the power range you're looking for, but 2.73s would probably get your top speed higher.

streeter69
05-22-2005, 11:21
Originally posted by p01ic3m4n
seems like you're going the wrong way with the gears looking for top speed. the last police car i drove would do 155mph on 3.23s. if you're looking for top speed, 3.73s are going to lower that quite a bit over 3.27s. is your car auto or stick? a different torque converter in an auto might help push out a little more on the tranny toward whatever end of the power range you're looking for, but 2.73s would probably get your top speed higher.

True, but.... modular motors can handle rpm where older 5.0 blocks do not like it. When I blow up my 3650 tranny I can go with a T-56 and have double overdrive;f

Ron3
05-23-2005, 14:48
Yup, NA 4.6's got to spin to make power.

Ron3

streeter69
06-03-2005, 13:23
Well, Just got back from a buddies shop and ordered my xcal tune;f I hope to pull another 10-15HP and with the speed limiter removed, I hope to hit 140;P

45acp4me
06-05-2005, 16:59
Originally posted by streeter69
Well, Just got back from a buddies shop and ordered my xcal tune;f I hope to pull another 10-15HP and with the speed limiter removed, I hope to hit 140;P

Couple that with a rear end that makes 5th gear useable, and you'll go faster than 140. :)

streeter69
06-11-2005, 19:15
WOOHOO, I finaly recieved my Xcal2. I downloaded my tune and BOY what a differance;f I can not wait for a topend run. I had the speed limiter removed and more timing and more injector pulse width added:)

45acp4me...I am not running auto cross so anymore gear will not help, it will actually hurt me. I am for all out speed....200 plus baby;f

vart
06-11-2005, 23:27
I don't know how fast I've gone since the speedo in my `69 Torino GT fastback only went to 120, but, the needle was well past 120 and hitting the 7 o'clock position:cool: . I was turning about 6500 rpms with 3.00 gears, so I figured I was around 150 or so.
Not bad for a car I paid $1500 for and was mostly stock with a 300 hp 351W. The 80's were a great time to be a teenager and into musclecars:cool: .

Here's a pic of my beast after I warmed up the 351W and did some other stuff:
<img src='http://img.villagephotos.com/p/2002-3/14007/CWCEQ-69torino.jpg.JPG' width=700 height=525 >

G36.45
06-12-2005, 11:24
Originally posted by streeter69
WOOHOO, I finaly recieved my Xcal2. I downloaded my tune and BOY what a differance;f I can not wait for a topend run. I had the speed limiter removed and more timing and more injector pulse width added:)

45acp4me...I am not running auto cross so anymore gear will not help, it will actually hurt me. I am for all out speed....200 plus baby;f


If you plan on even approaching 175...you better break out the check book and quit screwing around with the rinky dink stuff.

JohnH
06-12-2005, 13:52
I saw a road test in Car & Driver, or Motor Trend, a couple of years ago on the Crown Vic Police Intercepter and what ever the Chevy Impala equivelent is. Anyway, the v-6 Impala was not only faster, but also quicker. The top speed on the Crown Vic was around 110 mph. That's right! The police intercepters are not near as fast as most people believe. The 4.6 P.I. engine has only 239 hp., same as the Crown Vic LX Sport model. Load them up with lights and all the other stuff and they'll be lucky to hit 120 mph, no matter what kind of gears they have.

45acp4me
06-12-2005, 19:30
Originally posted by streeter69
WOOHOO, I finaly recieved my Xcal2. I downloaded my tune and BOY what a differance;f I can not wait for a topend run. I had the speed limiter removed and more timing and more injector pulse width added:)

45acp4me...I am not running auto cross so anymore gear will not help, it will actually hurt me. I am for all out speed....200 plus baby;f

AutoX and lapping days are way different, lapping days use real race tracks and not parking lots. :)

Changing your rear end to something like a 3.73 makes 5th gear a power gear instead of overdrive. You'll have to add another 200+ HP to that car plus improve it's areodynamics to hit the 200 club.

Good luck!
Glen

vart
06-12-2005, 21:34
Originally posted by JohnH
The top speed on the Crown Vic was around 110 mph. That's right! The police intercepters are not near as fast as most people believe.
I owned a `95 Crown Vic PI and it would easily hit 120 mph. I also know of plenty of cops that have also hit the 130 mph mark. That article was full of it.
But, one thing is correct; a Crown Vic LX with the HPP package will out handle and out run a Police Interceptor.
240 hp was quite a bit in the mid-90's, but now my Wife's mid-sized SUV has more than that, and many family sedans are around 250 hp.

walkin' trails
06-13-2005, 16:30
Back years ago when I was a college freshman, I found a methematical formula in Hot Rod Magazine for calculating top speed. With pocket calculator in hand, I figured that my 1974 Volvo 164E with a fuel injected 2.9L six (something like 130-140 horses) pulling 5500 rpm, Borg Warner automatic transmission, and a 3:23 rear end should be good for about 160. Then my cousin and I went out and tried it on a country two lane. Had a slight incline, cold temperatures, and a tail wind, and the car hit 120 according to the speedo. Later on, on a flatter road and without the tail wind, I couldn't get it to do more than 105. Years later I found some factory specs that said that the car's top speed was rated at 107. Probably not bad for something of that era shaped like a brick and built like a tank. It was a better "sleeper" on the street though. It acquired a straight pipe exhaust, holes bored in the air cleaner housing, and bumped up timing. It actually ran pretty quick against late 70s and early 80s smog motored cars if you launched it by slapping it from neutral to drive at 3-4000 rpms. Then I learned about transmission rebuilds.....

JohnH
06-13-2005, 17:44
Originally posted by vart
I owned a `95 Crown Vic PI and it would easily hit 120 mph. I also know of plenty of cops that have also hit the 130 mph mark. That article was full of it.
But, one thing is correct; a Crown Vic LX with the HPP package will out handle and out run a Police Interceptor.
240 hp was quite a bit in the mid-90's, but now my Wife's mid-sized SUV has more than that, and many family sedans are around 250 hp.

The original post said his 02 Mustang GT (read; at least 500 - 700 lbs. lighter regular Crown Vic, with more horsepower, and much better aerodynamics) topped out at 135 mph. And now we are to believe a Crown Vic PI is only 5 mph slower? No way! And he also had the advantage of dropping down a gear to max out his run.

Most speedometers are very optomistic when it comes to registering top speeds. I had 72 Mazda RX2 that register 10-15 mph differences under the same conditions. I'm not calling you a liar, but actual top speeds are very different from those indicated by speedometer.

vart
06-13-2005, 18:02
Originally posted by JohnH
I'm not calling you a liar, but actual top speeds are very different from those indicated by speedometer.
Except that the speedos in the Police Interceptor are calibrated.


Each year since the 1978 models, the Michigan State Police has tested a variety of police package (pursuit capable) and special service package (not intended for pursuit) patrol vehicles. These annual tests include acceleration to 100 mph, absolute top speed, braking from 60 mph after brake warm-up, road racing course lap times, an ergonomic and communications installation review and EPA fuel economy ratings.
The acceleration, top speed and braking phases are conducted at Chrysler's Proving Grounds near Chelsea, MI. The vehicle dynamics testing has been performed on the 2.0-mile road course at Grattan Raceway near Grand Rapids, MI.

The police or special service sedan with the highest top speed is the 3.27 ratio Ford CVPI with a run at 128 mph, speed-limited to 129 mph. Second, was the Impala, which was speed-limited to 123 mph. The 3.55-geared CVPI is speed limited to 119 mph to prevent unwanted driveshaft harmonics. The special service Dodge Magnum reached 117 mph.

http://www.pfmmag.com/NovDec04/Julyaugustmichstate.htm

JohnH
06-13-2005, 19:40
Vart, the test I mentioned were fully equiped for patrol service (read: emergency lighting, radios, cage, etc.). That easily adds 200-300 lbs., maybe more, and not to mention much less aerodynamic. All considered, those items easily take 10 mph of the top. JohnH

vart
06-13-2005, 21:30
That could be true; my car was my personal vehicle and did not have a cage or lightbar, plus, I added freeflow mufflers, K&N intake, and some hotter plug wires.
But, it also had 125,000 miles on it^8

JohnH
06-13-2005, 22:04
Originally posted by vart
That could be true; my car was my personal vehicle and did not have a cage or lightbar, plus, I added freeflow mufflers, K&N intake, and some hotter plug wires.
But, it also had 125,000 miles on it^8

Yours is just barely broken in!;f Seriously, some cars are actually faster when they have a few miles on them. My old seveny-four Camero was faster at 90,000 than 20,000. Anyway, I'd really like to have a recent manufacture Crown Vic. P.I. I think they're great looking cars, safe, durable, and Glock simple. I drive a Lincoln Town Car with the 4.6 modular engine (great engine!). The thing I don't like about it are all the expensive electrical doo-dads that break. The Intercepters are simplicity itself. Anyway, you need to upgrade to a newer Crown Vic. Check out: www.used-police-cars.com

streeter69
06-14-2005, 05:57
Originally posted by JohnH


Most speedometers are very optomistic when it comes to registering top speeds.

Very true most speedos are only accurate to about 5%. Patrol cars are down to about 2%. I really do not trust them, I use a GPS and found my car off by 4 mph @50.

The new light bars are much better lower profile.

G22 Kid
06-16-2005, 18:48
While in theory, you want higher gears for more top end, I don't think the 4.6 has the guts to push 3.27s w/ OD to the mechanical limit.

I think you'd be best off with 3.55s

I'm a drag racer and I really don't give a rip about going over 120 mph...

Myth
06-17-2005, 13:34
I've only got 2800 miles on my Unique Performance Shelby GT500E (with the Performance upgrade...150Hp increase!!!;P), so I'm still getting to know the car and letting things seat properly before completely opening her up. But I'm DYIN' to see what the real limit will be. I've already beat the best Crown Vic top end posted here before even going through all the gears (6-speed Tremec T56)!!! ;) When I finally find the combination of enough running room, enough nerve, and no cops I let you know!!

Myth

Ron3
06-17-2005, 18:13
Originally posted by Myth
I've only got 2800 miles on my Unique Performance Shelby GT500E (with the Performance upgrade...150Hp increase!!!;P), so I'm still getting to know the car and letting things seat properly before completely opening her up. But I'm DYIN' to see what the real limit will be. I've already beat the best Crown Vic top end posted here before even going through all the gears (6-speed Tremec T56)!!! ;) When I finally find the combination of enough running room, enough nerve, and no cops I let you know!!

Myth

Cool! What engine do you have in that thing?

Ron3

Myth
06-17-2005, 22:51
Originally posted by Ron3
Cool! What engine do you have in that thing?

Ron3

Started out as a 351cid Windsor, but was opened up to 408cid and tuned by Shelby. Mine dyno tested at 489hp!!! Its a beast!! But its actually very drivable too.

Myth

Ron3
06-18-2005, 17:29
Thats a lot of power!

What does the car weigh? 3600lbs?

Ron3

streeter69
06-19-2005, 06:34
Originally posted by Myth
Started out as a 351cid Windsor, but was opened up to 408cid and tuned by Shelby. Mine dyno tested at 489hp!!! Its a beast!! But its actually very drivable too.

Myth

I do not like you, I love you MAN^7 And it is in a GT500E;W ;W

Myth
06-20-2005, 13:36
Originally posted by Ron3
Thats a lot of power!

What does the car weigh? 3600lbs?

Ron3

Not even that much. Closer to 3200-3300lbs. Unique Performance pays a LOT of attention to weight (along with a gazzillion other details) when they are putting these cars together. You pay for it, but the quality of work and engineering is definitely there in spades. Its the best of both worlds. Old-style muscle car package with state-of-art technology. Gut-wrenching power, but now with handling too!!;f It blows away the original factory cars (in EVERY respect).

Myth

SJRTX
06-20-2005, 21:41
Best ive done was pegged the speedo at 155mph, right after shifting into 5th, left it pegged for a little bit-car was still pulling hard id guess about 165 or so, with a 200lb passenger, and still not even close to shifting into 6th yet (ive got a t56 6speed). Car felt stable, but wasnt willing to push my luck anymore than that. A blowout at that speed would suck....im pretty sure.

Ron3
06-21-2005, 21:27
Originally posted by Myth
Not even that much. Closer to 3200-3300lbs.

Dang, sounds like an awesome ride!

Ron3

Cochese
06-24-2005, 17:43
I went somewhere in the mid 140's in my modified 89 Conquest TSi...
http://tinypic.com/6dradj.jpg
http://tinypic.com/6dra85.jpg

streeter69
06-25-2005, 05:46
Glocktastic........Nice ride, I do not see many of those anymore.

Cochese
06-25-2005, 05:48
Thank you Streeter.

I blew the motor to pieces and now drive a 2004 Ford Pickup.
:(



I *will* have another, as soon as I can get out of debt ;)

(so it can put me back into it)

HydraShok
06-26-2005, 18:40
I have a '93 Crown Vic LX with close to 300k on the odometer. Highest speed it would ever go according to GPS was 96mph. Mine was never a police model so it has a speedlimiter. Engine wasn't turning all that fast at 96, so I dunno what it would do without the limiter.

Cali-Glock
06-30-2005, 10:37
http://home.earthlink.net/~pcoc/images/140mph.gif

Ford Taurus SHO. The car that made women pee in their pants and embarassed 5.0 owners. I loved that car!

The fastest I have ever traveled on the road was 165mph in the ugly beast pictured below. (Cobra replica with a custom hard top created for this purpose.) I am somewhere in the back of this picture - the day after the picture was taken is when we wound it out on Shadow Mountain Road in the high desert of Southern California.

http://home.earthlink.net/~pcoc/images/equinoxclub.jpg

irishbum
06-30-2005, 12:09
Originally posted by streeter69
I went out in in the desert to see what my car would do;Q I only pulled 121mph in 5th gear at about 3500 rpm and 135-136 at about 5800 rpm in 4th gear. I guess I need more horsepower;W and better airflow;e

sorry to tel you i have a 87 Cougar w/stock 5.0 and a 247 rearend not ever H.O. (H.O. rated 225 hp, sefi 150 hp) & i got stopped out in a hombunk town doing 115 & had room to go. I thought you would have more power than hitt'n 120 you're geared higher & have more horses?

streeter69
06-30-2005, 18:59
Originally posted by irishbum
sorry to tel you i have a 87 Cougar w/stock 5.0 and a 247 rearend not ever H.O. (H.O. rated 225 hp, sefi 150 hp) & i got stopped out in a hombunk town doing 115 & had room to go. I thought you would have more power than hitt'n 120 you're geared higher & have more horses?

Yeah, I had lots of pedal left also....Then the factory limiter kicked in. You will have the same;f

fiveoboy01
07-12-2005, 00:42
I think I need to hit the car forum more.

Vart, that is a nice Torino. My GF's bro has a '70 Torino Cobra. He runs in in PRO Extreme street.

I believe(numbers escape me now) it's a 545-inch motor. All aluminum including the block! I know the car has gone in the 8.60s range with the nitrous. I can practically stick a soda can in the head ports, they're that big. He just had it painted and I wish I had the damn picture still so I could put it up. The car is nuts.

bac1023
07-12-2005, 09:06
I had an 1989 Porsche 944 turbo S. It had a chip installed and exhaust mods. Power output was about 320HP in a small, light car. It pegged its 180mph speedometer once. Most speedos are optimistic, especially at that speed, but I was moving. With its stock 247HP, the car was rated at 162mph in the owners book, so I imagine it was doing about 170 when it ran out of revs in 5th.

The car was awesome. Why I sold it, I don't know.