Mustang and Ford Performance Forums banner
1 - 20 of 35 Posts

·
Registered
Joined
·
861 Posts
Discussion Starter · #1 · (Edited)
We got a chance to give Vic's GT500 a few shakedown runs and were impressed by the MPH, though getting traction proved difficult =o)

Below are some pics:











More pics and full story here: CLICK HERE for DDD Directory Blog

As of now, it's making around 680 RWHP on pump gas.
Thanks again to ModularFords.com for being involved in this project....video coming soon!

Next: Hoosier drag radials and gear swap (going back from 3.73 to a 3.55 or maybe stock gear to see what happens)

Jim
 

·
Registered
Joined
·
63 Posts
WHY go from the 3.73's to anything else?? Speaking with several people that have this gear with the 2.8 KB and running 28" x 10.5" x 15" slicks going thru the traps @ 6-6200 rpms in 4th. gear. Perfect as far as I see it!! Any reasonable explanation??? :please:
 

·
Registered
Joined
·
262 Posts
Well.....

Before I go into how the car felt, performed, e.t.c. let me give some raw info to kind of set up the day.

Where:
Orlando Speedworld, Orlando Fl ... Temp: Aprox 89-90 degrees. Track Temp, Approx 130 degrees, Humidity was great in morning but by the time we ran (approx noon) it was noticeable.

Vehicle: Project Midnight Run. 2007 Shelby GT500. Mods: Whipple 3.4 17 lbs, pump gas, street tune, 3.73's , Kooks Long Tubes with catted X with Borla cat back, JLT True Cold Air CF intake, 60#rs, SCT tune, LFP Shelby GT500 SS hood

WEIGHT 2900 without driver, FULL tank of gas ( I know....), 255 lb driver(me), All thsi on Nitto DR's .... Oh and did i mention 3.73's? lol

Let me start by saying that the car pulls like a beeyotch and the tune feels scrong with no break ups or dead/flat spots. the exhaust sounds incredible at WOT but very subdued at idle and cruising speeds.

Ok, now that that is out of the way.... the car with it's set up, simply can not get enough traction to have an effective run. It was SOOOO frustrating. I would lunch at 2k and ease it out and then it would actually do well in first because I would ROLL into it but when it comes time to get into 2nd, you can not do the same thing or the run will completely be a waste. So each and every time I got into 2nd, the tires literally either just went up in smoke or they shook pretty hard and spun, gripped, spun, gripped e.t.c... When I got the car in 3rd, it pulled very hard and effortlessly, same for 4th. I noticed that the car would go through the traps at about 62-6300.

Now, WITH THIS SET UP, I personally feel that 3:55's would be perfect. I feel that 3.73's are a tiny bit too much with stock height tires.

Here is my best explanation of this, and remember --I am saying this concerning THIS SET UP. Ok, when you have a car that weighs this much (and yes I know the differences between the weight of this car and my 03 Cobra and I know some say geez lay off the whole heavy pig thing, but guys, I just cant...) it is in my opinion all about weight transfer (when launching) and hopefully using the tq that the car has in this set up. Now the car made about 640 ft lbs of tq on the dyno with same exact set up we had Saturday, just a little bit cooler the day of the dyno.

With the weight of the car (2900 plus Full tank plus 255 lb driver) at about 4300 lbs.... It is my opinion that having 3'73's makes the scenario worse with stock height tires. I think that 3.55's or the stock gear would be so much better (with stock height tires) for launching And going down the track. The drop in RPM's in each shift would get a bit more in the peak TQ area and I think would help the car a lot. Not to mention the effect on stretching out each gear a little longer I would think do well for traction.

I'd like to know if anyone has run 3.55's or the stock gears besides Lethal's 500 run yet and what their experience is with them. I think as we go on we will see more people with 3.55's and or stock gears.

I tried all i could to stop 2nd from spinning on each run but just couldn't do it. I must have ran the cat at least 6 times. I think only 2 were clean passes. An 11.0 at 130 and an 11.35 at about 129ish. I beleive the car in a cooler setting with tires that can actually hold and a decent launch the car will def go 10.6 - 10.7 at about 133-134. I had 1.80 60'ft's. with better tires and 1.70's (which are def obtainable) the car would drop 2 tenths right there. Drop 100lbs of gas and a NOT smoking hot blower that you couldn't even touch, and there has to be another 1-2 tenths right there.

I realize that is not some staggering deal, to be able to run 10.60's in this car, but at least then it will be where she should be.

Man.. I can't help but to think what this running gear would do in a car that is 4-500 lbs lighter. Geez... we will have some video stuff up soon, and the entire install VIDEO of PROJECT MIDNIGHT RUN will be done soon. It will be an awesome video and I hope you guys enjoy it.

Thanks.
 

·
Registered
Joined
·
262 Posts
You said it all by stating the size tire. With a better wheel and tire combo it should be fine. The customer is not looking to drag this car a lot and loves to play around on the street in it. A 3.55 or even stock gears in my opinion will not lose much time in the 1/4 for this car and would make a welcome change for the car's ability to get traction.

also remember that most that you are seeing that are making nice runs are running:

no sway bar or front suspension mods like K members and or sway delete and or coil over set ups. this car is just not set up that way. In addition the car is lowered, taking away a little more rear travel.

We'll get the car to make a 10.70 pass at least but I'm pretty positive it will need to be at night with about 20-30 degrees cooler than 90 degrees and obviously with some better tires.

Thanks.
 

·
Registered
Joined
·
1,315 Posts
I think you mean 3900 and not 2900 lbs. Get a better suspension set up! Sounds like your suspension is fighting you! That car with that power should easily be in the 10's. Something is way off here. Maybe to much air in the nittos, hell i'm not sure but somethings not right!
 

·
Registered
Joined
·
1,315 Posts
You said it all by stating the size tire. With a better wheel and tire combo it should be fine. The customer is not looking to drag this car a lot and loves to play around on the street in it. A 3.55 or even stock gears in my opinion will not lose much time in the 1/4 for this car and would make a welcome change for the car's ability to get traction.

also remember that most that you are seeing that are making nice runs are running:

no sway bar or front suspension mods like K members and or sway delete and or coil over set ups. this car is just not set up that way. In addition the car is lowered, taking away a little more rear travel.

We'll get the car to make a 10.70 pass at least but I'm pretty positive it will need to be at night with about 20-30 degrees cooler than 90 degrees and obviously with some better tires.

Thanks.
Once tires break loose a 3.31 or 3.55 is going to make it harder to keep it from spinning. Hey this is all just my opinion so take it for what you want, 3.73's are a good gear for this car and they need them to pull in 3rd and 4th
 

·
Registered
Joined
·
262 Posts
yes meant 3900. The day was Hot. The tires are not enough. The suspension is lowered and nto much travel,. The car had a full tank of gas, literally. But dammit I hate stating excuses like that. That's what everyone always does. I agree with everyone that the car should be in the 10's. easy... But I guess when you do the math of the weather and weight and not being able to get traction, it is what it is.
 

·
Registered
Joined
·
262 Posts
Yea eric. I know i though about that. We'll try to just get some tires and wheels first and run it with a 1/4 tank and not on a 90 degree day. I KNOW I can get a 10.60-70 out of her just with tires and a 1/4 tank. I know it.
 

·
Registered
Joined
·
1,430 Posts
Do you guys see any problem with the fuel crossover line contacting the blower? I don't mean a fire risk (although that might be a consideration), but rather heating the fuel unnecessarily by being in contact with the blower when it is heat soaked?
Just wondering.
 

·
Registered
Joined
·
861 Posts
Discussion Starter · #15 ·
Do you guys see any problem with the fuel crossover line contacting the blower? I don't mean a fire risk (although that might be a consideration), but rather heating the fuel unnecessarily by being in contact with the blower when it is heat soaked?
Just wondering.
Def might me a concern.
The blower gets HOT. Noticeably hotter than the Whipple on Chris 03 cobra.
May have just been the sweltering outdoor temps on Saturday........
 

·
Registered
Joined
·
65 Posts
I had good luck with D-specs going real loose in front and sorta tight in rear. You might already have adjustibles shock/struts on there? The stock suspension sucks for transferring weight. This really helped my 60s.

I would get the Nittos off imediately. I have 4.10s and no where near the power of this beast and my Nittos would hold the power 1 out of 5 times if I rolled out gently around 2K. No consistency at all! :angry:

Awesome car! looks gorgeous under that hood.:worthy:
 

·
Registered
Joined
·
262 Posts
Thanks Fatchile! I wish i could take credit for the car, but it's a customers of Jake LaMotta here in Orlando. His name is Vic and he is a great guy, he loves to go to car shows and play around int he car, but when it comes to taking the car down the track, he's alittle intimidated witht eh car and would rather let someone else do it.

I have been down the track about 3-400 times in past with about 5-6 diff Cobras and some other Gt500's. I usually do well (most of the time better than the average Joe) but as stated earlier, the conditions and the limited traction e.t.c.. became a problem.

The car is doing the 30 mph above the 1/8th mile mph like it should so it's just a matter of hooking properly. If the car won't get traction, it won't launch either e.t.c...
 

·
Registered
Joined
·
214 Posts
Thanks Fatchile! I wish i could take credit for the car, but it's a customers of Jake LaMotta here in Orlando. His name is Vic and he is a great guy, he loves to go to car shows and play around int he car, but when it comes to taking the car down the track, he's alittle intimidated witht eh car and would rather let someone else do it.

I have been down the track about 3-400 times in past with about 5-6 diff Cobras and some other Gt500's. I usually do well (most of the time better than the average Joe) but as stated earlier, the conditions and the limited traction e.t.c.. became a problem.

The car is doing the 30 mph above the 1/8th mile mph like it should so it's just a matter of hooking properly. If the car won't get traction, it won't launch either e.t.c...
I met Vic and seen his car at the GT500 GTG in Oviedo. That car looks great, can't wait to see the videos!!
 

·
Registered
Joined
·
440 Posts
i put 3.55's in my car and i really like them but because i lowered my car so much i rub with 28" tires so i run 26" slicks (haven't yet but will) and my nitto DR's that are in my sig. i run through the traps at about 6k and 133 mph with 1.69 60'
 
1 - 20 of 35 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top