Why is my 3v so slow at the track?

[Bossmustang16]

full bolt on 3v with 3.73 gears and 100 shot,
best its ever ran was a 7.65 with a 1.65 60 foot
car now has 4.10 gears, 1 piece driveshaft, wot box but don't know if that will help any..
what can i do to make this car go low 7's? it should it has the power!

 

[stkjock]

Driver mod

That 60' has room for improvement. Tire? Psi? Launch rpm?

Rear suspension set up?

Still have the front sway bar?

Tons of info on the site about this.

 

[Bossmustang16]

MT Drag Radial pro 275/60/15 and its a 5 speed car as well.
lowered a 1.5 or two and upper arm and mount. yes still have all sway bars.. street car

i think around 15 psi launch anywhere from 5-6000

 

[fdjizm]

How is the shifting? what MPH is it running?

 

[Bossmustang16]

shifting is pretty good, and 91 mph

 

[stkjock]

Remove front sway bar

LCA relocation brackets could help as well.

How does the car weight transfer?

 

[psfracer]

Post a slip. I want to see the incrementals.

Is it a 5 speed manual or a 5 speed auto? Edit--nevermind I see where you stated you launch between 5K and 6K rpm.

Where do you start squeezing? Out of the hole? 2nd? Do you know the weight of the car?

 

[Bossmustang16]

It's just a normal s197 so idk about the weight. I weigh 130 lbs... And idk exactly what weight transfer is.. And slip goes as this
60- 1.66
330- 4.91
1/8- 7.65
Mph- 91.00

 

[stkjock]

weight transfer is how the weight of the car moves from the front to the back on the launch.

if that's your car in your avatar it seems to transfer ok. However, any vids from the track for your launch?


you're also not answering questions posed to help.... read the posts and re-read yours before you submit.

 

[s8v4o]

full bolt on 3v with 3.73 gears and 100 shot,
best its ever ran was a 7.65 with a 1.65 60 foot
car now has 4.10 gears, 1 piece driveshaft, wot box but don't know if that will help any..
what can i do to make this car go low 7's? it should it has the power!

Full bolt-ons? Got a list? Who's tune? I'm assuming by the way you worded everything that the 7.65 was before the addition of the gears, driveshaft, wotbox? Just from looking at your mods you should be able to run low 7's already. What gears did you have with that run?

I weigh 130 lbs.

HO-LEE-FUK, damn you're light dude!

 

[Bossmustang16]

it ran the slip posted above with the 3.73 no one piece driveshaft and no wot box.
STKJOCK- I try to spray it off the line as well.
bolt ons are as follows
DPT Longtube Headers, Off Road H Pipe
FRPP Hot Rod Cams
Airaid CAI
Upper Control Arm and adjustable mount
100 shot wet, Nitrous express solenoids through Zex Nozzle
93 Race tune from bama
15x10 SVE Drag Wheels with MT 275/60/15 Radial Pro
Stock 5 speed transmission with Roush Short Throw

I have Videos but idk how to post them

Bolt on Coyotes are going 7.5's all day and I know I have more power and very similar 60 ft to most

 

[fdjizm]

That's odd I guess we have the same parts, bolt on's + HR cams.
I ran 7.645 in the 1/8 best @ 90mph, but you have a 100 shot on top of that?
Sound fishy.

Check the plugs lately?

 

[Bossmustang16]

right plus additional 100 shot.. I think since you are running the 26" tall tire that is helping you being N/A my tire is 28" Tall.
I have not checked the plugs but they should be fine car runs great

 

[stkjock]

I have Videos but idk how to post them

Bolt on Coyotes are going 7.5's all day and I know I have more power and very similar 60 ft to most

do you have the vids hosted somewhere? YouTube or Photobucket for instance.


crazy thought... are you sure the N2O is activating?

bottle pressure good?

The Bama tune is probably leaving some on the table as well.

 

[s8v4o]

What does it run without the nitrous?

 

[Bossmustang16]

N20 is definitely activating!
It runs 8.30-8:40 without the n20.
Bottle pressure around 1150 with full bottles

I'll try to get it on photobucket

 

[psfracer]

N20 is definitely activating!
It runs 8.30-8:40 without the n20.
Bottle pressure around 1150 with full bottles

Well that is more then a 100 shot then. The jetting charts are based on a nitrous pressure of 950 psi.

On the incrementals, everything looks to be in order. 91 mph should be around a 7.60.

Go from simple to more complicated. On nitrous cars, I ALWAYS check the plugs. Then I would mess with the tune, especially since you have the hot rod cams. As far as the 28 tall tire, I don't think that is hurting you if you are, in fact, squeezing right out of the hole.

What is the typical DA at the track you race at?

 

[stkjock]

Treed

What is the typical DA at the track you race at?

that was going to be my next question

 

[terry5357]

When I had my '06 with about full bolt ons and 3k stall i was running 7.80's in 1/8, something is fo sho up. '06 had 4.10's, 3k stall, C&L racer intake, LCA's, UDP's, CMCV deletes, comp 127200 cams on nittos

 

[s8v4o]

Personally I would get your NA runs on par with where they should be before running the juice because obviously something isn't right and it's better to be safe than sorry. As Paul mentioned I would get a proper tune for your mods. Does your tune account for the cams or is it just a canned 93 race tune?