for almost 2 years this guy has been competing with me. hes a spoiled little rich kid whos dad is VERY high up at a local Ford dealership. this kid has been through about a half dozen cars (coutesy of daddy) trying to take out my Vette, and so far none have done it :rockon: so hes finally settled on a 01' Cobra convertible. i saw him run it once back in the summer and it went 13.7s. three months later, he claimed it went 13.2s with a gear change to 4.10s. now he says it runs 12.7s i dont know what mods it has... im sure it has the gears, and probably exhaust and hpipe. i really dont know.

but anyway, to get to the point, im sick of hearing this guy talk trash on not only my car, but anything thats not a Ford. the real kicker is that he acts like hes cool with me to my face, then i hear about him talking all kinds of smack behind my back. so i think its time to send this kid crying home to daddy once and for all. what do you guys think would be the outcome if we raced?

BTW, my car is currently down, as im swapping in a new 2500 stall converter. my best time is a 13.20 at 104mph with a 1.89 60ft. this was before the TPIS cold air (which i didnt get to test before the track closed). there are a few guys on the vette forum that have the same converter as i have and they say mid - high 1.7 60fts are the norm with DRs. i know i dont know all the variables on the Cobra (ill try to find out later), but what do you think itll take for him to actually get that 12.7 E/T that he claims?

 

If he is running what he claims it should be close. You should be running 2-3 tenths faster than before with the converter and Cold Air Intake.

 

what he said

 

For the kid to slice off a whole .5 of a second in e.t. with those kind of #'s he must have done a lot. If he already did gears, he must have done headers, with a full exhaust, and a chip, and possibly a cold air setup or a good ol' K&N.

That's a lot of horsepower to add to get those times, especially form a internally stock Cobra.

Maybe he also got some D/R's???

I means .5 off your e.t. when you run 15's is different from half a second when you run 12's, it takes more power the faster you already are.

 

If you will be pulling consistent 1.7's on the 60 foot mark, then you have already take off 2 tenths on just your 60. How much is the cold air setup worth?? I think, you will be running 12.8's with an occassional 12.6-12.7.

Good luck.

BTW: I just noticed that you are running 3.07's in your rear, shoot you would gain 2 tenths just by swapping for 3.23's.

 

seems like after the converter swap its going to be a close race...

good luck..

 

Need like 3.42 gears. I hope you win.

 

Throw on a 100 shot and smoke his ***! Keep that on the down low!:hail: spray!

 

well swapping gears into a Vette is a big PITA. you have to drop alot of the IRS stuff to get to the diff cover bolts. not only that, but the auto Vettes came with a weaker rear end then their manual counterparts. so if its time to swap gears, ill just throw in a whole new rear. alot of Vette guys are in the low 12s with the stock 3.07s, so theyre not all that bad.

I REALLY dont think hes running anywhere close to 12.7s like he claims. hes always played that "im gonna be faster than you" game. its like:

im runnin 13.6s, so he says hes running 13.2s
then i run a 13.2, and suddenly hes now going 12.7s
thought about it, STILL thinking about it, maybe after Chrismas

Hey Stang guys, what would it really take for a 01' Cobra vert with an average driver (hes not that great, but he doesnt suck either, so no Bob Cosby times please!) to hit a 12.7 like he claims? i want to compare the real thing with his "mod" list

 

lol, the bob cosby bolt on is worth 4/10ths. I've been fortunate enough to run with him on T&T nigth a few times and it's something you'd really have to see to believe. Now, to the question...

It really wouldn't take much at all to get the Cobra into the high 12's. 4.56's, slicks, and a shifter would do the trick...while the rearend lasted. That's not very likely the case here though. I'd be more inclined to think he's got 3.73's or 4.10's, offroad H pipe, cat back, and maybe pulleys and a cold air intake. That should be sufficient to get it into the 12's also.

 

That's what I figured, cept he may have done the computer deal also. I don't know much about stang computers and the ability to tune them, but that's what I think. What he said, yup.

 

I wouldnt be too quick to call BS on the guy. What he is claiming is not impossible, just not probable.

Cobras are funny sometimes...driver input plays a large role in their ET's. A real good driver will make the car shine. A poor driver will make the car significantly slower.

I say if he drove the hell out of it and got a good launch he's probably good for a real low 13/high 12.

The good news for you is that the converter will wake up your car. Keep in mind that the converter will do more for you than just lower your 60' times. My Yank 3000 gave me NOTICABLE shift extention on both 1-2 and 2-3 shifts.

-Doug

 

yeah, thats what i heard from alot of people on the Vette forum. theyve all gotten really good results, so i decided its time to try one. as soon as i get it in (and break it in, of course) im gonna call this guy out. unfortunately, it probably wont be done for a couple weeks due to the holiday season... ive still got shopping to do!
ummm... does that mean the car will be shifting a few hundred rpm later than normal? that may be good for an LS1, but my stock trans shifts my TPI motor about 4800 - 4900 rpms right now. any higher and id probably be losing power due to reving beyond my powerband

 

About the car shifting later...

I have a friend with an El Camino with a turbo 350 trans...... no shift kit, after he put a stall in it, it chirps the tires. I would think that because the converter is looser, the motor will have to wind up a bit more to make the trans shift. Not sure tho.

Your 700r4 shifts AUTOmatically at 4900???? That seems pretty high. Or are you manually shifting???

 

nope, i leave it in 3rd, and let the car do the shifting. if i manually shift it, i usually end up with slower E/T and mph. you gotta remember, its a Vette 700R-4. they were a little different in these cars

 

I read somewhere that if you manually shift a C.C. car, it leans out the a/f mixture. Is that why you get slower e.t.'s??

In my 91', I have to manually shift at about 5800rpm, if I leave in in Drive, it shifts at like 4500. My motor powers up to almost 6000.

 

tpivette,
When I say shift extention, I do not mean a later shift.

What I mean is that the rpms drop less at the 1-2 shift (major on 700r4) and the 2-3 shift, than they did with the stock converter. This is caused by converter slip...but does wonders for 1/4 mile times because it keeps the motor more in it's powerband.

Some converters will do this more than others. Typicaly "looser" or converters with lower (numericly) stall torque ratios (STR) provide more shift extention. Do you know what the STR is of the converter you are thinking of?

Mine is 2.0 which basicly brakes down to twice the torque output at 3000rpm (the stall rating). It is a fairly loose converter for its stall rating.

-Doug