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How Fast?
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Posted by: Mustangkid

OK so Im getting a new car and theres a 98 convertable GT down the street for sale. Its automatic. Does anyone have an idea of what kinda 1/4 mile time I would be running with basic bolt ons. Like headers, exhaust, intake, pullys and maybe a chip. Would that make a decently quick 4.6 auto??

Posted by: Mustang5L5

Um it would be pretty slow. Stock it would prob run around mid 15's. Even with those mods it would barely break into the 14's.

If you are going to get an automatic convertible, at least make it a 99+ PI'd 4.6L. The auto trans is improved as well as the power so it would be a mid 14 to high 14 second car stock. WIth bolt ons you could whittle it down to low to flat 14's.

5-spd coupe would be faster, but i can understand wanting a vert

Posted by: 94gtstang50

Probably a 15 flat if that due to the extra weight.

Posted by: Mustangkid

Quote:

Originally Posted by 94gtstang50

Probably a 15 flat if that due to the extra weight.

15 flat stock?

Posted by: 94gtstang50

15.5 stock, 15 flat with a cai, full exhaust, and pullies in decent weather (60's with 50%ish humidity).

Posted by: badass98svt

I'd say a low 15 second car WITH those mods. I owned a 97 GT coupe with similar mods. It was slow as shlt, well compared to the cobra that I bought after it.
throw some 3.73 out back and you'll break into the 14s

Posted by: Mustang5L5

Quote:

Originally Posted by Mustangkid

15 flat stock?

More like 15 flat with about $1000 in mods done to it.

A better title for this thread is "How slow?"

Posted by: 94gtstang50

Quote:

Originally Posted by badass98svt

I'd say a low 15 second car WITH those mods. I owned a 97 GT coupe with similar mods. It was slow as shlt, well compared to the cobra that I bought after it.

+1

I pretty much spent 1k to get my gt to hit 15 flat and another 1k to get it into the mid 14 range.

Posted by: Mustangkid

wow never mind, Ill keep looking. lol

Posted by: badass98svt

96-98 stangs are commonly called "turds" over on mw. lol

Posted by: bullitt5177

Yeah, those are the closest thing to the modern day Mustang dark ages. lol

Posted by: nolimitblue99gt

I would say mid-high 14's, not quite 15.

Posted by: Cody1774

My 02 is slow.... If I can get back making some money, I plan on changing that. What would you all say my car is? Mid 14s?

Posted by: badass98svt

Depends Cody....can you drive the shlt out of it?
with the 18s on there...high-mid 14s
with dr's you should be able to muster up a low 14. I've heard of stock 99-04 gt's pulling 13.9s

Posted by: Cody1774

Quote:

Originally Posted by badass98svt

Depends Cody....can you drive the shlt out of it?
with the 18s on there...high-mid 14s
with dr's you should be able to muster up a low 14. I've heard of stock 99-04 gt's pulling 13.9s

Just curious why the 18s would slow me up a bit? The lower profile on the tires keep the same circumference. As for my driving, I am unexperienced doing 1/4 mile. I don't even race at red lights or anything, but from time to time I like to drive my car pretty hard on the highway.

Posted by: badass98svt

the 18s weigh A LOT more than the stockers. rotational mass is the worst weight to add to your car. It affects the performance the most.

Posted by: Mustang5L5

Quote:

Originally Posted by Cody1774

Just curious why the 18s would slow me up a bit? The lower profile on the tires keep the same circumference.

It doesn't work like that.

Most of a wheels mass is it's rim, not the spokes.

Now take two tires, one 17" and one 18". Same diameter overall and same exact weight (which is untrue because the majority of 18" wheels will be heavier)

SIne the 18" are bigger, the rim is further away from the center hub of the wheel. The further away, the more energy it takes to spin. The closer, the easier.

So all things equal, the smaller rim the easier to turn. This is why drag racers usuallyu try to stick the smallest rims they can on their car, to bring the center of mass closer to the wheel center.

BTW..Stock with my '03 GT i ran a 14.1 with a 5-spd

Posted by: Snov001

Quote:

Originally Posted by Cody1774

My 02 is slow.... If I can get back making some money, I plan on changing that. What would you all say my car is? Mid 14s?

When I bought this car it ran okay, fun to drive and sounded nice but wasn't fast. My cousin owns a service station and is a true motor head I told him I wanted to develop a plan where we could do add ons in an order working to a final goal. This guys is sharp so I will just pass it on to you guys. First were the tires Goodyear Eagle GTs. Then 373 rear, Dynomax ultra flow exhaust. ( real nice deep sound when just taking it easy, jump on it and they wake up and sound awesome). Next was High Flow shorty headers and 2.5 cat back. Cold air intake that I made. I was a plumber before I was disabled so I made it a true 3" smooth inside and gradual turns. Underdrive pullys, Steeda Tri Axe shifter. Here come the stuff that really pulled it together. Diablo Predator tuner and loaded in their performance tune. BBK 75mm TB and Plenium. Since I had more air I could run more fuel so I went from stock #18 to Ford racing #24. Now this messed up my Diablo tune I was way out of their perameters with all the air and fuel. I called gave them a list of everything I did and for 100.00 they wrote me a custom tune. It was cool they emailed it to me, thru an interface I loaded up the Diablo hand held, then I uploaded it into the car. I tinkered around with it for a week making minor changes. I am convinced for what I have this car runs as good as possible. It takes alot to satisfy me, but I am pretty happy with it now. It does things it would never do like putting along in 2nd or 3rd gear and stomp on it and the tires break loose for a while and hook back up. The way we did it was everything was done in order so you only really had to deal with one tune.

When I was in the Heating business the last job we did was a radiant heat job for a company that builds race engines for all over the USA. I had to kiss his a-- but he agreed to pull my engine and put forged crank and all forged internals in the lower end. He is going to build it up like it was his own. He claims he can get me 450+ RWHP. I cut him a real deal on his heating system so he says It should cost me around 2500.00 to 3K.

Later guys and let me know what you thinkk of "the plan"

Steve