Why is my car soo slow?

OLDJUNK93 · May 8, 2004

here's the deal. 2 years ago i went to the track and my car ran 15.10 all stock accept for catback, pulleys, k&n in stock box, and chip. now the chip is gone plus but i have added everything in the sig and tonite i ran 15.19 @ 91 mph. why is it so slow? i should be in the mid to low 14's now. any suggestions on what to check? any help would be greatly appreciated. thanks

Demon440 · May 8, 2004

slow 60' time would be my first bet.

ComfortablyNumb · May 8, 2004

Maybe your AOD is slipping now and it wasnt before?

OLDJUNK93 · May 8, 2004

it does'nt feel like it is slipping, still shifts hard and there was no tire spin.

blk92stangg · May 8, 2004

You may need a new torque converter, as well as a shift kit, since the gears change things up a bit. I am the furthest thing away from an expert on this, but I always hear Gears/converter/shift kit in the same sentence.
Could you also be spinning the tires and losing time there?

OLDJUNK93 · May 8, 2004

i had some guys watching and they said the tires were'nt spinning and the tranny has a shift kit in it already, stock converter.

Demon440 · May 8, 2004

are you power breaking off the line or just pushing the gas when the light turns green, and are you shifting it or are you letting it shift automatic? Also what rpm is it shifting at?

OLDJUNK93 · May 8, 2004

yes i'm power braking it and shifting it at 5500 rpm, launching it at 2000 rpm.

davs5.0 · May 8, 2004

Converter is the problem, the stock stall is way too low for any good times to be run at the track.

Check out my sig for my times and notice that I'm in the 13.8's with not much more than you have. The stall and some ET Streets brought my times down to the 14.1's with 3.55's in the car. 13.8's with the 3.90's.

OLDJUNK93 · May 8, 2004

there is a big difference between 15.19 and 13.80. i think it is something besides the stall making it slow. it ran 15.10 without the gears.

admstng · May 8, 2004

OLDJUNK93 said:
there is a big difference between 15.19 and 13.80. i think it is something besides the stall making it slow. it ran 15.10 without the gears.

I would bring the car somwhere and get it checked out

Matts89LX5.0 · May 8, 2004

get a good convertor. Heard some people going from 14s to high 13s with a switch of a convertor. Good luck.

Matt

86GT-Top · May 8, 2004

I ran 14.9 at 92 with stock 2.73's and an off-road H and Mac cat-back. So i dunno what to tell you, i'll be putting 3.73's in soon and hoping for a big difference.

OLDJUNK93 · May 8, 2004

who knows, thanks for the input.

Mustang5L5 · May 8, 2004

What's your altitude??

91MPH is a low trap speed for what you have done.

OLDJUNK93 · May 8, 2004

1850 feet

SuperStang83 · May 9, 2004

No doub look into a converter. I have heard many great things about aftermarket 2500-2800 stalls on bolt on Stangs!

Jakob

Mustang5L5 · May 9, 2004

He shouldn't need a torque converter. He's down on power for some reason.

With about the same mods, i was running 14.4's @ 97-98MPH all with stock converter and no shift kit in the AOD.

93 teal terror · May 9, 2004

Whats your 60'? what tires? Post the whole slip

maverick0716 · May 9, 2004

That time isn't too far off for the mph he is running. Something is wrong with the car.

Why is my car soo slow?

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