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View Full Version : what exactly makes Mach 1 Mustanks faster?


GottaHaveLS1
10-21-2007, 05:28 PM
I'm curious what makes the mach 1's more of a competition for the ls1. I haven't raced one before and i've heard they're pretty much dead even and it's a drivers race. What did Ford do to their crappy 4.6 to make it generate more HP and torque? I would assume its got a better valvetrain or cam or something...

BlueBomber
10-21-2007, 05:35 PM
32 valve instead of the 24 valve found in the gt's 4.6?

red99ws6
10-21-2007, 05:37 PM
yeah it is basically the same as a 99-01 cobra motor except it has i think 9:1 compression instead of 10:1 like the old corbra motor. not sure on the exact compression but it is a difference of one

2000T/A Guru
10-21-2007, 05:40 PM
Its a cobra 4.6liter, with dual over cams, so 4 cams and 4 valves per cylinder. the GTs only have 2 per cylinder and 2 cams total. Also the comperssion ratie is 10 to 1 and the cobra 9 to 1. Also the have a better itnake which is good for a few more horsepower. GTs have 16 valves

GottaHaveLS1
10-21-2007, 06:02 PM
how much more rwhp do they net over the GT's?

02Ls1Formula
10-21-2007, 06:06 PM
i believe the gts have 240 rwhp and the mach 1 has 300ish?? could be wrong

GottaHaveLS1
10-21-2007, 06:19 PM
geeze, thats a pretty intense gain. I thought pre-05 GT's had 265 hp stock (LOL:jerkit:), so they've got to have less than 240rwhp. I thought the mach 1's had around 300 flywheel hp, which should be dwarfed compared to the ls1's 330-350 hp, right?

Imagine how sweet firehawks would be if GM upgraded the cam and valvetrain enough for a 60 hp gain. (they couldn't have any f body outrunning vettes tho) I guess it leaves us with more fun stuff to do :zoom:

NvyBluMtlc02WS6
10-21-2007, 11:29 PM
I haven't found one to be much of a challenge. I had the same dude try me one night three different times and i smoked him every time. Poor mushstank didn't stand a chance.

Wesman
10-22-2007, 12:09 AM
Like the other guys said, basically the entire top end of the motor is different.

There is nothing inherently wrong with the 4.6. It just doesn't make that much power in 2V form because it can't breath very well and it isn't all that big of a motor.

So when Ford upgraded the heads and valvetrain to a DOHC/4V design, the motor gained a bunch of power, especially in the top end. The 2V's power tapers off before 6,000RPM, while the 4V pulls strong right to its 7,000RPM redline. The more air you can move the more power you can make, and the 4Valve heads move a lot more air.

Its the same principle Honda uses to get 200HP out of a 2.0L, the valvetrain flows a lot of air given the engine size, and it has a high redline to make the most of it. The 4V heads work on the same principle, just on a much larger scale, being a V8.

predator
10-22-2007, 03:58 AM
if they had put 6 speeds in mach they would have been a contender...

and i want to say they are 320 horse...

-me

Rikki_SeVeN
10-22-2007, 09:05 AM
My friend's Mach1... dynoed at 265whp 282wtq... bone stock... it's rated at 305hp at the crank... and 320tq... they are great cars that flow really well...

he did a Intake and X-pipe... and beat me past 100mph... (not my much)... I'm automatic...

Their fast... their Gearing has much to do with it too... 3.55 gears out back... and a very good 5 speed... the axles are a weak link though... they've been known to snap on stock power...

2000T/A Guru
10-22-2007, 09:18 AM
Stock pre 05 Gts, make 260, which is around 190-200rwhp, the mach 1s make around 260-275rwhp and about 315-320 at the crank. The new GTs make 300hp at the crank and about 230-245rwhp. The mach is a good contender for the LS1, since when do you need a 6 speed to be fast, a 5 speed is just as fast. You just dont have the 6th gear for the gas mileage. Auto ls1s make around 285-300rwhp.

predator
10-22-2007, 09:38 AM
Stock pre 05 Gts, make 260, which is around 190-200rwhp, the mach 1s make around 260-275rwhp and about 315-320 at the crank. The new GTs make 300hp at the crank and about 230-245rwhp. The mach is a good contender for the LS1, since when do you need a 6 speed to be fast, a 5 speed is just as fast. You just dont have the 6th gear for the gas mileage. Auto ls1s make around 285-300rwhp.

thats exactly the point... if you run a 6 speed you have more ability to make power through 4 or so gears... and still have 5 and 6 for hiway and interstate driving...

but i guess your right... its not like cobras, z's, ss, formys, trans am, rx8s, 350z's, vipers, ferraris, lambos, porsches, BMWs, srt 8 300's and chargers (though in auto form), srt-4s, miatas, skyes and solstices, and even ton trucks have gone to 6 speeds for any reason...

my buddy has a 99 cobra he put 3.90 gears in it and now 1-4 pull pretty hard and 5 is ok for the hiway, but if you put it on the interstate he is running like 3500 RPM. where as b4 when he was ok cruising on the interstate his car was a turd when you got up to around 3rd gear...

-me

blackhawk01
10-22-2007, 09:41 AM
Imagine if they stuck an LT5 in the Fbodys:nana:

2000T/A Guru
10-22-2007, 09:57 AM
Yes but i was just saying you can make the same power wit ha 5 speed as you can a 6 speed. You said if they have a 6 speed they would be a contender, but they are with the 5 speed and so it any car with power and a 5 speed. And naming all those cars that have 6 speeds is great, there are tons of fast cars with 5 speeds.

predator
10-22-2007, 12:29 PM
name 3 modern ones that dont have a superior model with a 6 speed... no gt stangs... or boxters (non s version)...

thats like saying... "there are plenty of carberated fast car"... and there are, but once a better way came along they all changed to the BETTER WAY...

TBI worked for a while too... but hmmm not so much a contender now...

and as far as being a contender in 5 speed form.... i know machs are a bit faster than non charged cobras... but b4 my buddies gears i could put about 10 lengths on him from 0 -100... now that his first 4 gears are closer to my first four its more like 5 lenghts...

-me

2000T/A Guru
10-22-2007, 12:44 PM
What did your car run in the 1/4mile that you can take low ot mid 13 second cars by 10. You have to running mid to high 12s, which i am aswell and i have taken atleast 5 mach 1s but 5 speeds can be fast, you dotn need to upgrade to a 6 speed to be fast my supra has a 5 speed from 1987, and it runs low 11s a slightly built and rebuilt 5 speed but still that tranny will be driveable on it when it runs 10s and still be great for racing.

GottaHaveLS1
10-22-2007, 12:44 PM
Yes but i was just saying you can make the same power wit ha 5 speed as you can a 6 speed. You said if they have a 6 speed they would be a contender, but they are with the 5 speed and so it any car with power and a 5 speed. And naming all those cars that have 6 speeds is great, there are tons of fast cars with 5 speeds.

6 speeds have tighter gear ratios and go thru the gears/rpms faster.

2000T/A Guru
10-22-2007, 12:51 PM
Well when i run my T/A wit h3.42s against the supra with 3.73s when the supra had 352rwhp and the T/A had 337rwhp they were dead even and the supra shifted a moment after me through all the gear, and we were dead even up to 115mph. The supra having slightly longer gears yes, but shift points in the race were almost the same, T/A reline 6100, the supra back then was just over 6300.

predator
10-22-2007, 12:53 PM
wow thats great... then he put it in 6th and didnt get shit gasmileage...

oh and supras... forgot about that being a 6 speed in the uber supras...

and i have an frc vette... dont they run like high 12s?

-me

2000T/A Guru
10-22-2007, 12:58 PM
Yeah i have a 87 not a new style, with 517rwhp. BTW i dotn have my supra for racing, so gas mileage doesnt matter, same with the T/A if you want gasmileage dont get a T/A and supra with 350rwhp got a little better than the T/A with 337rwhp. I do agree six speed is better, but im just saying just cause you out one in a car doesnt make it faster. Which is what the coment, put a 6 speed in it and it would be a contender states.

predator
10-22-2007, 01:01 PM
Its a street car... you gotta have gas milage...

My statement was CLEARLY that they need a 6 speed to both maintain streetability and be able to really give an ls1 car a run for its money...

i can put a power glide in a drag car and whip some ass... I was simply saying the final drive ratios you could get with a 6 speed would really wake up the car in stock form...

-me

p.s. im done...

2000T/A Guru
10-22-2007, 01:04 PM
What im tellign you is i own a 500+rwhp supra with 5 seed that is still just as streetable as it ever was. MY girlfreidns 5.0 with 622rwhp is streetable with a 5 speed and 3.73s. You dotn need a 6 speed to be streetable, however nice the gasmileage is. If your gonna complain about gas mileage dont be into street racing. I dont really need to get into how many vettes i pull up next to in the supra that think im just some dumb kid with a loud exhaust and then get smoked.

predator
10-22-2007, 01:11 PM
:notworthy:

that is me.... that is me bowing to your God like deduction and persuasion skills... I will forever regret the day I tried to show you the way... I have now reconsidered my entire style of driving and from now on I will only use 2nd, 4th, and 6th to honor you...

-me

2000T/A Guru
10-22-2007, 01:18 PM
Thank you sir, i accept you surrender:butt:

As for showing me the way, the only point i was trying to argue is that you dont need a 6 speed to be a fast streetable car, which i believe was you statement, that if you wans a fast streetable car you need a 6 speed. I agree that the 6 speed is better, but just cause ls1 cars have them doesnt mean that extra gear really matters in a race.

ATCharming
10-22-2007, 01:35 PM
i only read the first few posts, but fords got a couple different 4.6's. the gt has a 24 valve makin 240-260hp, the ~01 cobras have an iron 32 valve 4.6 making closer to 300hp, maybe even a little over, and the mach 1's have an aluminum 32 valve 4.6 making about 315flywheel horsepower. i might have aluminum and iron mixed up, but i know ones got one and the others got another so they arent entirely the same block

2000T/A Guru
10-22-2007, 01:44 PM
But if the GTs, are 2 valves per cylinder, how do they have 24valves, the 05+ GTs have 24 valve 3 per cylinder but the 04 and earlier have 16.

Hows that z28 treating you

Wesman
10-22-2007, 03:11 PM
i only read the first few posts, but fords got a couple different 4.6's. the gt has a 24 valve makin 240-260hp, the ~01 cobras have an iron 32 valve 4.6 making closer to 300hp, maybe even a little over, and the mach 1's have an aluminum 32 valve 4.6 making about 315flywheel horsepower. i might have aluminum and iron mixed up, but i know ones got one and the others got another so they arent entirely the same block

Only the 05+ 4.6 GT's are 24V, since they are 3V per cylinder. The 96-04 4.6's were either 16V (2V per cylinder) or 32V (4V per cylinder). There was no 24V before 2005.

And for the record, manual 99-04 GT's put down around 230WHP. 03-04 Mach 1's put down 270-290WHP, and 05+ GT's put down around 280WHP.

2000T/A Guru
10-22-2007, 03:14 PM
Really, i ahve had friends with catback on there GTs, only put down 215rwhp

GottaHaveLS1
10-22-2007, 03:40 PM
Only the 05+ 4.6 GT's are 24V, since they are 3V per cylinder. The 96-04 4.6's were either 16V (2V per cylinder) or 32V (4V per cylinder). There was no 24V before 2005.

And for the record, manual 99-04 GT's put down around 230WHP. 03-04 Mach 1's put down 270-290WHP, and 05+ GT's put down around 280WHP.

I think all your numbers are overrated. A 265 fwhp GT is not gonna lose just 30 hp thru the flywheel, clutch etc. LS1's are around 350 flywheel HP, thats why they average from 290-320 rwhp stock (including factory freaks). I doubt a 300 hp 05 GT or Mach 1 or cobra will make over 270 rwhp.

2000T/A Guru
10-22-2007, 03:44 PM
Mach 1 and cobras are a little underrated, most stock machs make 275rwhp. They say the ls1 is underrated becuase my car is listed a 305hp at the crank but i made more then 300 to the wheels.

Wesman
10-22-2007, 04:16 PM
I think all your numbers are overrated. A 265 fwhp GT is not gonna lose just 30 hp thru the flywheel, clutch etc. LS1's are around 350 flywheel HP, thats why they average from 290-320 rwhp stock (including factory freaks). I doubt a 300 hp 05 GT or Mach 1 or cobra will make over 270 rwhp.

The majority of 99-04 Mustang GT dynos I've seen averaged between 220-230WHP. If you do the math, a 265HP 4.6 losing 15% (manual) through the drivetrain figures out to 226WHP. Not that far off from 230WHP.

As for Mach 1's, they are slightly underrated from the factory, hence the numbers. Its prety widely known that they put down around 280WHP.

As for the 05+ GT's, I remember people saying they put down around 270-280WHP, but could be off with those numbers.

Rikki_SeVeN
10-22-2007, 04:18 PM
The majority of 99-04 Mustang GT dynos I've seen averaged between 220-230WHP. If you do the math, a 265HP 4.6 losing 15% (manual) through the drivetrain figures out to 226WHP. Not that far off from 230WHP.

As for Mach 1's, they are slightly underrated from the factory, hence the numbers. Its prety widely known that they put down around 280WHP.

As for the 05+ GT's, I remember people saying they put down around 270-280WHP, but could be off with those numbers.

280whp for Factory Freaks you mean... my friends Mach1 put down 265whp on a DynoJet... and it's Low Millage Bone Stock...

GottaHaveLS1
10-22-2007, 04:25 PM
Mach 1 and cobras are a little underrated, most stock machs make 275rwhp. They say the ls1 is underrated becuase my car is listed a 305hp at the crank but i made more then 300 to the wheels.

Think they're underrated??? They are man lol. I've seen stock f body's dyno more rwhp than c5's.

GottaHaveLS1
10-22-2007, 04:27 PM
The majority of 99-04 Mustang GT dynos I've seen averaged between 220-230WHP. If you do the math, a 265HP 4.6 losing 15% (manual) through the drivetrain figures out to 226WHP. Not that far off from 230WHP.

As for Mach 1's, they are slightly underrated from the factory, hence the numbers. Its prety widely known that they put down around 280WHP.

As for the 05+ GT's, I remember people saying they put down around 270-280WHP, but could be off with those numbers.

you're right, and there' always a range with rwhp even between the same model, same year or any car. I really meant that you're numbers were just slightly high, but some cars will dyno more hp than others.

NvyBluMtlc02WS6
10-22-2007, 07:58 PM
I'm still up in arms over everyone's comments about the Mach. I'm completely stock and a mach 1 has no business even trying to play with me. The literally don't stand a chance. Stock for stock that is. I really don't know how you all can say that they are a contender for an LS1. Post all the numbers you want, out on the roads they don't compare.

Rikki_SeVeN
10-22-2007, 08:07 PM
I'm still up in arms over everyone's comments about the Mach. I'm completely stock and a mach 1 has no business even trying to play with me. The literally don't stand a chance. Stock for stock that is. I really don't know how you all can say that they are a contender for an LS1. Post all the numbers you want, out on the roads they don't compare.

well maybe for a M6... they might not have what it takes...but it'll still be relatively close...as for A4's... my friend Beat me...only by 3/4 of a car... but a Win is a win...and his is a M5...

Wesman
10-22-2007, 08:35 PM
I'm still up in arms over everyone's comments about the Mach. I'm completely stock and a mach 1 has no business even trying to play with me. The literally don't stand a chance. Stock for stock that is. I really don't know how you all can say that they are a contender for an LS1. Post all the numbers you want, out on the roads they don't compare.

Stock for stock an M5 Mach 1 should beat an A4 LS1, and a M6 LS1 should beat an M5 Mach 1. A lot of it comes down to driver skill.

Saying that "they have no business even trying to play with you" is just ignorant. Were talking a few tenths of a second difference here, not a V6 Mustang vs an LS1.

Knight Stalker
10-22-2007, 11:25 PM
I think all your numbers are overrated. A 265 fwhp GT is not gonna lose just 30 hp thru the flywheel, clutch etc. LS1's are around 350 flywheel HP, thats why they average from 290-320 rwhp stock (including factory freaks). I doubt a 300 hp 05 GT or Mach 1 or cobra will make over 270 rwhp.

It's generally a wise idea to assume factory flywheel horsepower ratings are bullshit until they're substantiated with dyno pulls. A good friend of mine owns a speed shop with a chassis dyno, and I've been witness to countless dyno sessions on many different vehicles. I've never personally witnessed a Mach 1 on the dyno, but I can attest to Wesman's claims regarding the actual whp of '99-'04 2-valves and the '05 up 3-valves. The stock '99-'04 5-speeds I saw ranged from 215-230, and the '05-up from 265-280 rwhp.

94lt1ss
10-23-2007, 06:17 AM
ya i had a tuned 99 cobra and one of my friends has a 02 ss and its bone stock 6spd vs. my 5spd and he beat me by like five from a 40 to 140. the ls1 is a beast

2000T/A Guru
10-23-2007, 08:36 AM
This is true but i also think he might be a better driver, i have seen bone stock 99 cobras run 13.4s, unless his f-bdoy is running like a 12.9-13.1, which is possible.

NvyBluMtlc02WS6
10-23-2007, 09:23 AM
Stock for stock an M5 Mach 1 should beat an A4 LS1, and a M6 LS1 should beat an M5 Mach 1. A lot of it comes down to driver skill.

Saying that "they have no business even trying to play with you" is just ignorant. Were talking a few tenths of a second difference here, not a V6 Mustang vs an LS1.

No, i'm not being ignorant, i'm just stating what i have encountered with my run ins with mach 1's. Maybe i just know how to drive my car, but i'm telling you, of the three times i've raced one, the difference has been 4-5 car lengths. Also, I don't appreciate being called ignorant. I never once used a derogatory statement towards anyone in this thread. I was just curious on how everyone could say that mach 1's are a challenge.

2000T/A Guru
10-23-2007, 09:31 AM
I have raced a few the autos i have tekn up to 8 or more lengths, those htings suck and the m5s i have taken anwhere from 6 lengths to half a car with a good driver and some bolt ons i also had a passenger and he didnt.

Wesman
10-23-2007, 08:54 PM
No, i'm not being ignorant, i'm just stating what i have encountered with my run ins with mach 1's. Maybe i just know how to drive my car, but i'm telling you, of the three times i've raced one, the difference has been 4-5 car lengths. Also, I don't appreciate being called ignorant. I never once used a derogatory statement towards anyone in this thread. I was just curious on how everyone could say that mach 1's are a challenge.

Don't get so defensive man...I merely said I thought your statement was ignorant, I wasn't calling you ignorant.

With equal drivers an M6 LS1 should pull a M5 Mach 1 by a car or two, so if you are an above average driver and the Mach 1 driver sucked, 4-5 cars is definitely possible.

greatwhiteZ28
10-24-2007, 06:17 PM
ill admit i got beat by a mach at strip while back , with him running a 12.88 ( wasnt stock, slicks + other stuff, didnt talk to him) but they do move for sure.

what do they tend to run stock??

Rikki_SeVeN
10-24-2007, 06:20 PM
ill admit i got beat by a mach at strip while back , with him running a 12.88 ( wasnt stock, slicks + other stuff, didnt talk to him) but they do move for sure.

what do they tend to run stock??

wroughly 13.5... is the official numbers... but I guess it depends on the driver

greatwhiteZ28
10-24-2007, 06:24 PM
thanks, at least i know i didnt get beat buy a stocker LOL....

Rikki_SeVeN
10-24-2007, 06:25 PM
thanks, at least i know i didnt get beat buy a stocker LOL....

LOL... a stocker would snap axles waaaaaay before running that 12.8... but if they would hold up with good tires... who knows...

Wesman
10-24-2007, 09:19 PM
LOL... a stocker would snap axles waaaaaay before running that 12.8... but if they would hold up with good tires... who knows...

Where did you hear that the axles are weak?? I've never heard that before, all V8 Mustangs use the Ford 8.8, which is a very strong rear. If we can run 12's with out 28 spline axles in a 10 bolt, I don't see why a Mustang with a Much stronger rear and larger axles wouldn't be able to.

Rikki_SeVeN
10-25-2007, 04:32 AM
Where did you hear that the axles are weak?? I've never heard that before, all V8 Mustangs use the Ford 8.8, which is a very strong rear. If we can run 12's with out 28 spline axles in a 10 bolt, I don't see why a Mustang with a Much stronger rear and larger axles wouldn't be able to.

I've heard it from the Mach 1 Forums... in which my friend who drives a Mach1 participates in...and I've seen videos of it... they usually step up to 31 spline axles...

9T8W66
10-28-2007, 06:39 AM
Heres a couple things you guys haven't touched on yet
Back in `99 SVT revamped the DOHC 4.6 up to 320 HP. Although most owners had warranty issues with them because of an Intake Manifold problem these engines never made the 320 HP that Ford Stated.
By `00-01 the Manifold problem was solved and the cars showed a definete improvement. Meanwhile Ford introduced the Bullitt Mustang (remember those guys) Which was a GT with Chassis, Suspension, Brake, and Transmission upgrades along with a few Retro styling cues. From what I remember Bullitt Mustangs met with rave reviews from the Automotive press. I drove one myself and it really was a great car, except it lacked power. it was also the first Factory Mustang I ever saw with Subframe connectors.
FF to `03 The Mach 1 is essentially a Bullit Mustang with the Late 320 HP Cobra engine, which was the first use of this engine infront of a SOLID AXLE.
The bullitt used a 3.27 Axle vs the Mach 1's 3.55 `99-`01 Cobra's were IRS.

2000T/A Guru
10-29-2007, 02:44 PM
Yes but the mach 1 motor is also a higher compression ratio than the cobra, with a different intake not intake manifold just intake, which i guess in ford world only adds 5hp since the mach 1 was said to make 325 at the crank. Most dyno 270 which is about 325 at the crank. The cobra was a 9 to 1 and the mach is a 10 to 1

greatwhiteZ28
10-29-2007, 05:25 PM
Yes but the mach 1 motor is also a higher compression ratio than the cobra, with a different intake not intake manifold just intake, which i guess in ford world only adds 5hp since the mach 1 was said to make 325 at the crank. Most dyno 270 which is about 325 at the crank. The cobra was a 9 to 1 and the mach is a 10 to 1

was it 9 to 1 for the 03 + cobras?? they did that to mesh with the blower right?

predator
10-29-2007, 05:43 PM
03 04 are 8.5... the 99 01 are 9:1

-me

greatwhiteZ28
10-29-2007, 06:32 PM
what were gt's ??

predator
10-30-2007, 02:46 AM
im assuming 9:1... i would think they used the same rotating assemblies on the n/a cobras as they did the gt's.

-me

2000T/A Guru
10-30-2007, 07:39 AM
Yes GTs are 9 to 1, it just seems weird that the Mach 1 makes the same or slightly more rwhp when the comp ratio is higher and what they claim is a better intake. Seems like they could have put a little more effort into the mach 1. If they had added like slightly larger cams or something like that i bet that car would be a neck and neck race with a ls1 everytime.

Rikki_SeVeN
10-30-2007, 07:40 AM
Yes GTs are 9 to 1, it just seems weird that the Mach 1 makes the same or slightly more rwhp when the comp ratio is higher and what they claim is a better intake. Seems like they could have put a little more effort into the mach 1. If they had added like slightly larger cams or something like that i bet that car would be a neck and neck race with a ls1 everytime.

with a Manual LS1 you mean... :brick:

2000T/A Guru
10-30-2007, 07:53 AM
I have seen great drivers get a bone stock mach 1 to run a 13.2. Now it takes a good driver to get a ls1 to run that, although we have seen high 12s. Most people who run bone stock ls1s have trouble running below 13.5.

greatwhiteZ28
10-30-2007, 04:14 PM
I have seen great drivers get a bone stock mach 1 to run a 13.2. Now it takes a good driver to get a ls1 to run that, although we have seen high 12s. Most people who run bone stock ls1s have trouble running below 13.5.

13.4 for me soo yea the mach moves. for a stang..... LOL

Rikki_SeVeN
10-30-2007, 04:19 PM
I have seen great drivers get a bone stock mach 1 to run a 13.2. Now it takes a good driver to get a ls1 to run that, although we have seen high 12s. Most people who run bone stock ls1s have trouble running below 13.5.

I'm curently suposed to be in the 13.5 area...if I get a good 60ft... and I still got my ass beat by a Mach1 (M5)... I was right on his bumper... but he still won...

(automatic)...

Chris Arnold
11-06-2007, 04:05 PM
The 8.8 on the mach is as stout as any, and they aren't even stressed out until you're launching on slicks.

For one, ETs have nothing to do with breaking axles. If you're running a strong suspension with a sticky tire, and a lot of torque, you're more likely to break something. But if you're running street tires, can't hook but have 1000 hp, you might still make it into the 10s.... You're certainly not going to break any rear axles on those street tires.

Second, what you've most likely heard about was the numerous '03 and '04 Cobras who've been breaking half-shafts, and they typically swap out the IRS and swap in an 8.8 or a 9" rear.

28 spline axles have their limit, but I've had them into the 11s personally, and a buddy of mine, Mike Bell running NMRA, has been into the 10s.

Next, the argument about the 5spd vs. the 6 spd. is just plain stupid. It sounded like someone originally argued that the 6 speeds gave a performance advantage.... Well, unless you're road racing into 5th gear, that's bunk. Even then, there are specialized 5 speed road racing trannies like the TKO II with a better 5th gear ratio that negates that advantage, as well.

The 4th gear in each tranny regardless of whether it's a 5 or 6 spd is 1:1... Furthermore, the gears that have the most significant impact on ET are the earlier ones.

Next, Mach 1s are a driver's race for LS1s plain and simple. Fastest Mach1 I've ever heard of ran a 13.2... The fastest LS1? 12.87 (Evan Smith). That's 3 tenths of a second difference and anyone trying to rock a stock manual tranny's gears is going to have a little trouble being more consistent than 3 tenths of a second at the peak of their car's capabilities. Think of the fastest ET you've ever run in your car.... Now think of the slowest..... If that difference is more than 3 tenths of a second, you get my point. If it's not, you are a god.....or more likely you haven't been to the track more than once. Not even the best drivers I know are more consistent than that.

I'm not going to get into the rwhp dyno argument, because dyno numbers are never consistent, and noone really cares what a car dynos when they're beating it in a race.

Chris

2000T/A Guru
11-07-2007, 07:32 AM
I have only been to the track twice, first time the car was lowered with a short shifter but otherwise was stock i ran 13.2-13.7 that day. Second time best was a 12.87 worst was a 13.2 with a lid, catback and headers. It was also 15 degrees warmer the second time.

Chris Arnold
11-07-2007, 08:40 AM
So.... yeah

Rikki_SeVeN
11-07-2007, 08:46 AM
So.... yeah

I think your point was well made...

2000T/A Guru
11-07-2007, 08:51 AM
I know i wasnt disagreeing with you. Just posting my times cause im gay. Yes the only way to tell who is faster is to race. I have never lost to a mach 1 with bolt ons. Someday i might but not until next spring lol.

Rikki_SeVeN
11-07-2007, 08:54 AM
I know i wasnt disagreeing with you. Just posting my times cause im gay. Yes the only way to tell who is faster is to race. I have never lost to a mach 1 with bolt ons. Someday i might but not until next spring lol.

I might just get to experince the joy of Racing a 6-speed LS1 alot sooner then I though... against the Mach1 of my friend ofcourse... I'll tell ya how that goes... but it wont be too fair for him... because it will be a C5 Vett...

2000T/A Guru
11-07-2007, 09:00 AM
So what does that mean, i have taken c5 vettes, they are lighter but have that pesky IRS not as good for drag racing. I think that will be a close race, the vette is stock right?

Rikki_SeVeN
11-07-2007, 09:02 AM
So what does that mean, i have taken c5 vettes, they are lighter but have that pesky IRS not as good for drag racing. I think that will be a close race, the vette is stock right?

we'll be going from a Roll... just like last time... only this time I'll be runnin the C5 Vett my dad is curently in the process of purshasing...

the weak link there...will be me as the Un-experienced Driver... and the 100% Stock Vett (that wont last long)...

not only that, but the Mach1 is gonna get a Dyno tune... probably before any racing can happen

2000T/A Guru
11-07-2007, 09:05 AM
It will be close the t56 requires some practice.

Rikki_SeVeN
11-07-2007, 09:07 AM
It will be close the t56 requires some practice.

my dad's already buying a ShortShifter... he hasn't even done the Tittle exchange(spellin?)

:lol:

2000T/A Guru
11-07-2007, 09:11 AM
Mine came with one on it, makes the shift to 3rd gear so much easier, but the gears are so close. I had driven alot of stick cars before i got this one, the supra and like 25 others, but this car took a little getting used to. The 6 speed means 1st and 3rd are like 1/4 an inch apart lol.

Rikki_SeVeN
11-07-2007, 09:24 AM
Mine came with one on it, makes the shift to 3rd gear so much easier, but the gears are so close. I had driven alot of stick cars before i got this one, the supra and like 25 others, but this car took a little getting used to. The 6 speed means 1st and 3rd are like 1/4 an inch apart lol.

damn... well I've only ever really driven...a Miata... before this... Manual... so... I guess you can say...I have to take what I know from that, and add it to what I know from driving a LS1 with cheap tires...and tie it together...

2000T/A Guru
11-07-2007, 09:33 AM
Have fun lol. Just remember its not your car, SLAM THOSE GEARS

Rikki_SeVeN
11-07-2007, 09:35 AM
Have fun lol. Just remember its not your car, SLAM THOSE GEARS

LOL... yeah, but if I fuck it up... I can say goodbye to my Camaro... cause he'll keep it (even if its under my name)... and tell me...well you deal with the Fucked up Vett with your own money!!...

2000T/A Guru
11-07-2007, 09:41 AM
If my car can hold gears beiong slammed that vette can do it once.

Rikki_SeVeN
11-07-2007, 09:43 AM
If my car can hold gears beiong slammed that vette can do it once.

Miata's done it a few times... and it's engine is leaking from everywhere... so it's ok I guess...

Chris Arnold
11-07-2007, 01:33 PM
Hell, the vette doesn't really even need a short-shifter in my opinion. The mustang needed one badly, but the vette feels like it already has one. First and only time at the track in my '97 yeilded a 13.2@108 in 80 degree heat. I think it was a high 1.9 or low 2.0 60' on the stock EMTs. The best part about the vette, though, has nothing to do with the performance ;)... Let's just say, chicks dig vettes, and guys think they're worth more than they really are.

Chris

Rikki_SeVeN
11-07-2007, 01:36 PM
Hell, the vette doesn't really even need a short-shifter in my opinion. The mustang needed one badly, but the vette feels like it already has one. First and only time at the track in my '97 yeilded a 13.2@108 in 80 degree heat. I think it was a high 1.9 or low 2.0 60' on the stock EMTs. The best part about the vette, though, has nothing to do with the performance ;)... Let's just say, chicks dig vettes, and guys think they're worth more than they really are.

Chris

I look Foward to asking my dad to let me take out to Cruise at night, around all the clubs and such... with the Top Down... :coffee: