New times...slower after 4:10s..why?

StangMan04 · 04-14-2006, 08:10 PM

Okay last fall I ran a 14.2 with my 04 GT Automatic.

Well I have full exhaust,tune and 4:10s now.

the 14.2 was without Longtube headers and the 4:10s.

Well tonight i did 3 runs... these are with the 4:10s,LT's and new shift points

1st run... 14.49/93.26mph
2nd run... 14.50/93.24mph
3rd run... 14.84/93.07mph

I did feel in the 1st 2 runs that the car felt like it stopped accelerating when she hit 4th.

3rd run a spun so I know why that is slow.

But what gives? I thought I would have done much better

WaterDR · 04-14-2006, 08:12 PM

What were your 60 foot times?

By the looks of it, you either are driving poorly, or you are not making power. Your trap speed is really slow.

StangMan04 · 04-14-2006, 08:18 PM

my 14.2 run before was...

r/t .5223
60ft 2.1479
330 ft 6.0358
1/8 e/t---9.21
1/8mph---78.41

ET 14.21
miles per hour 97.95

14.49 run tonight was...

r/t .5746
60ft--2.24
330 ft--6.11
1/8 e/t-- 9.31
1/8 miles per hour-- 76.98
1/4 e/t--14.49
1/4 miles per hour-- 93.26

Blue02GT · 04-14-2006, 08:19 PM

Never let your car shift into 4th at wide open throttle

Turn off traction control and lock out overdrive to race.
As far as your times being slower there is only one way to compare trips to the track. You have to correct your times so you can compare. Atmospheric conditions, your 60' time all play into the equation. Good cold low humidity air will drop 2-3 tenth's off of your time. It's a pretty good chance that you had alot more tire spin with 4.10's than your stock gears. Bad sixty foot times equal slow et's. Gears will make you faster if you can hook. Also the tune on a automatic is a huge deal. If your car is short shifting due to the gear change you will be slower. Looking at your info I'd say you are shifting short, that trap speed is way low.

StangMan04 · 04-14-2006, 08:23 PM

Quote:

Originally Posted by Blue02GT

Never let your car shift into 4th at wide open throttle

Turn off traction control and lock out overdrive to race.
As far as your times being slower there is only one way to compare trips to the track. You have to correct your times so you can compare. Atmospheric conditions, your 60' time all play into the equation. Good cold low humidity air will drop 2-3 tenth's off of your time. It's a pretty good chance that you had alot more tire spin with 4.10's than your stock gears. Bad sixty foot times equal slow et's. Gears will make you faster if you can hook. Also the tune on a automatic is a huge deal. If your car is short shifting due to the gear change you will be slower. Looking at your info I'd say you are shifting short, that trap speed is way low.

I had it shifting at redline from 1-2, i think 2-3 too. I never checked 2-3 or 3-4 cuz i was watchin the other car :bash:

StangMan04 · 04-14-2006, 08:28 PM

O yeah i forgot... i was O/R last fall. I am catted now, dont know if that would affect much tho.

Blue02GT · 04-14-2006, 08:35 PM

Cats cost you 10 hp. I know that when I started changing gears on mine the stock tune was poop. I had mine road tuned, we set the convertor lock up and shift points. To give you an idea of how much it can affect you my SCT chip has four positions. Position 0 is street tune car runs 13.60's pos. 2 & 3 are track tunes, car runs 12.80's - 13.20's depending on the 60'. It makes a world of difference.

StangMan04 · 04-14-2006, 08:36 PM

Yeah, i need a new tune bad. I forgot about O/D too. I did have traction control off though. I just feel like **** having put new gears in her and getting this. I was hoping to break in the 13's

Blue02GT · 04-14-2006, 08:40 PM

As to the 3-4 shift you don't want to go into overdrive for two reasons.
1. The tranny is not made to shift into 4th at w.o.t. it will brake in time.
2. It slows you down the gearing is way too high and you also drop your rpm's too low to make power hence the feeling of falling flat on your face. With your limited mod's you should be shifting at 5,600 - 5,800 rpm. Check and see how long it's taking to shift, mine would rev too high because it shifted too slowly. I put in a PA valve body and that went away. You can also do the J mod and that will clear up the slow shifting.

StangMan04 · 04-14-2006, 08:43 PM

Quote:

Originally Posted by Blue02GT

As to the 3-4 shift you don't want to go into overdrive for two reasons.
1. The tranny is not made to shift into 4th at w.o.t. it will brake in time.
2. It slows you down the gearing is way too high and you also drop your rpm's too low to make power hence the feeling of falling flat on your face. With your limited mod's you should be shifting at 5,600 - 5,800 rpm. Check and see how long it's taking to shift, mine would rev too high because it shifted too slowly. I put in a PA valve body and that went away. You can also do the J mod and that will clear up the slow shifting.

yea it felt like she died going into 4th. i need to find someone to do the jmod for me. i dont wanna drill a wrong hole of somthing. man i wish i had gotten a 5-spd :wallbash:

Blue02GT · 04-14-2006, 08:49 PM

Quote:

Originally Posted by StangMan04

yea it felt like she died going into 4th. i need to find someone to do the jmod for me. i dont wanna drill a wrong hole of somthing. man i wish i had gotten a 5-spd :wallbash:

Not me.

m0nkeh · 04-26-2006, 09:44 AM

when dragging with an auto, O/D ON or OFF?

jeredan2003 · 04-26-2006, 11:35 AM

Looks like your car is having problems. You dropped 4mph and thats just like 40hp. I would make sure that your car is running right and yes the tune is the best way to go. I trapped 100mph last night with major traction issues in 1st gear. With your mods you should be able to run some 13s.

spike_africa · 04-26-2006, 12:14 PM

Quote:

Originally Posted by m0nkeh

when dragging with an auto, O/D ON or OFF?

off, you do not go into 4th gear in an auto at wide open throttle at all.

04-14-2006, 08:10 PM	#1 (permalink)
StangMan04 Ricer Abuser Join Date: May 2005 Location: Richmond,Va Posts: 430	New times...slower after 4:10s..why? Okay last fall I ran a 14.2 with my 04 GT Automatic. Well I have full exhaust,tune and 4:10s now. the 14.2 was without Longtube headers and the 4:10s. Well tonight i did 3 runs... these are with the 4:10s,LT's and new shift points 1st run... 14.49/93.26mph 2nd run... 14.50/93.24mph 3rd run... 14.84/93.07mph I did feel in the 1st 2 runs that the car felt like it stopped accelerating when she hit 4th. 3rd run a spun so I know why that is slow. But what gives? I thought I would have done much better __________________ 2004 GT SLP Loudmouth 2 Catback,SLP Catted X-pipe,SLP LT Headers,JLT RAI,4:10s, XCal2. Waiting to go in: VT Stage 3 Blower Cams, 3200 Stall

04-14-2006, 08:12 PM	#2 (permalink)
WaterDR Administrator Join Date: Sep 2004 Posts: 6,370	What were your 60 foot times? By the looks of it, you either are driving poorly, or you are not making power. Your trap speed is really slow. __________________ Black 2000 GT Vert: Novi-2000 with Intercooler (375rwhp @ 9 psi); Tune by Kauffmans; Roush 380R Body kit; Steeda Subframes; Steeda Strut Tower Support; Deep Dish Bullets; FRPP 4:10's; SCT 4 Position Chip with four custom tunes; Steeda CAI; C&L Pleum; BBK 75 TB; SLP Loudmouth; SLP Catted X-Pipe; Bullitt Suspension; UPR Conrol Arms; Focus Fuel Pump My Car My Email

04-14-2006, 08:18 PM	#3 (permalink)
StangMan04 Ricer Abuser Join Date: May 2005 Location: Richmond,Va Posts: 430	my 14.2 run before was... r/t .5223 60ft 2.1479 330 ft 6.0358 1/8 e/t---9.21 1/8mph---78.41 ET 14.21 miles per hour 97.95 14.49 run tonight was... r/t .5746 60ft--2.24 330 ft--6.11 1/8 e/t-- 9.31 1/8 miles per hour-- 76.98 1/4 e/t--14.49 1/4 miles per hour-- 93.26 __________________ 2004 GT SLP Loudmouth 2 Catback,SLP Catted X-pipe,SLP LT Headers,JLT RAI,4:10s, XCal2. Waiting to go in: VT Stage 3 Blower Cams, 3200 Stall

04-14-2006, 08:19 PM	#4 (permalink)
Blue02GT Ex Mini Smack King Join Date: Nov 2004 Location: St. Louis Posts: 868	Never let your car shift into 4th at wide open throttle Turn off traction control and lock out overdrive to race. As far as your times being slower there is only one way to compare trips to the track. You have to correct your times so you can compare. Atmospheric conditions, your 60' time all play into the equation. Good cold low humidity air will drop 2-3 tenth's off of your time. It's a pretty good chance that you had alot more tire spin with 4.10's than your stock gears. Bad sixty foot times equal slow et's. Gears will make you faster if you can hook. Also the tune on a automatic is a huge deal. If your car is short shifting due to the gear change you will be slower. Looking at your info I'd say you are shifting short, that trap speed is way low. __________________ True Blue 2002 GT Premium 4r70W 1/8 8.205@ 84.780 1/4 12.874@ 107.20 Bolt on's n/a NMRA #7703 Dyno'd at Modular Depot 251 hp. 291 Tq. 4.30's, 3500 Stall converter, Steeda upper & Lowers, Tokico drag struts, M & M frame connectors, P & A valve body, C&L plenum, Accufab 75mm TB, Jet Hot Long tubes, Hooker O/R X, Steeda catback,SCT tune,Steeda pullies.

04-14-2006, 08:28 PM	#6 (permalink)
StangMan04 Ricer Abuser Join Date: May 2005 Location: Richmond,Va Posts: 430	O yeah i forgot... i was O/R last fall. I am catted now, dont know if that would affect much tho. __________________ 2004 GT SLP Loudmouth 2 Catback,SLP Catted X-pipe,SLP LT Headers,JLT RAI,4:10s, XCal2. Waiting to go in: VT Stage 3 Blower Cams, 3200 Stall

04-14-2006, 08:35 PM	#7 (permalink)
Blue02GT Ex Mini Smack King Join Date: Nov 2004 Location: St. Louis Posts: 868	Cats cost you 10 hp. I know that when I started changing gears on mine the stock tune was poop. I had mine road tuned, we set the convertor lock up and shift points. To give you an idea of how much it can affect you my SCT chip has four positions. Position 0 is street tune car runs 13.60's pos. 2 & 3 are track tunes, car runs 12.80's - 13.20's depending on the 60'. It makes a world of difference. __________________ True Blue 2002 GT Premium 4r70W 1/8 8.205@ 84.780 1/4 12.874@ 107.20 Bolt on's n/a NMRA #7703 Dyno'd at Modular Depot 251 hp. 291 Tq. 4.30's, 3500 Stall converter, Steeda upper & Lowers, Tokico drag struts, M & M frame connectors, P & A valve body, C&L plenum, Accufab 75mm TB, Jet Hot Long tubes, Hooker O/R X, Steeda catback,SCT tune,Steeda pullies.

04-14-2006, 08:36 PM	#8 (permalink)
StangMan04 Ricer Abuser Join Date: May 2005 Location: Richmond,Va Posts: 430	Yeah, i need a new tune bad. I forgot about O/D too. I did have traction control off though. I just feel like **** having put new gears in her and getting this. I was hoping to break in the 13's __________________ 2004 GT SLP Loudmouth 2 Catback,SLP Catted X-pipe,SLP LT Headers,JLT RAI,4:10s, XCal2. Waiting to go in: VT Stage 3 Blower Cams, 3200 Stall

04-14-2006, 08:40 PM	#9 (permalink)
Blue02GT Ex Mini Smack King Join Date: Nov 2004 Location: St. Louis Posts: 868	As to the 3-4 shift you don't want to go into overdrive for two reasons. 1. The tranny is not made to shift into 4th at w.o.t. it will brake in time. 2. It slows you down the gearing is way too high and you also drop your rpm's too low to make power hence the feeling of falling flat on your face. With your limited mod's you should be shifting at 5,600 - 5,800 rpm. Check and see how long it's taking to shift, mine would rev too high because it shifted too slowly. I put in a PA valve body and that went away. You can also do the J mod and that will clear up the slow shifting. __________________ True Blue 2002 GT Premium 4r70W 1/8 8.205@ 84.780 1/4 12.874@ 107.20 Bolt on's n/a NMRA #7703 Dyno'd at Modular Depot 251 hp. 291 Tq. 4.30's, 3500 Stall converter, Steeda upper & Lowers, Tokico drag struts, M & M frame connectors, P & A valve body, C&L plenum, Accufab 75mm TB, Jet Hot Long tubes, Hooker O/R X, Steeda catback,SCT tune,Steeda pullies.

04-26-2006, 09:44 AM	#12 (permalink)
m0nkeh Stang Love Join Date: Jan 2005 Location: Deltona FL Posts: 1,089	when dragging with an auto, O/D ON or OFF? __________________ - 01 Gt Vert Black on Black - mods - SLP LM1 Exhaust

04-26-2006, 11:35 AM	#13 (permalink)
jeredan2003 Senior Member Join Date: Nov 2004 Location: Murfreesboro, TN Posts: 1,788	Looks like your car is having problems. You dropped 4mph and thats just like 40hp. I would make sure that your car is running right and yes the tune is the best way to go. I trapped 100mph last night with major traction issues in 1st gear. With your mods you should be able to run some 13s. __________________ 2003 DSG GT 5-speed Hellion 62mm and Flowmaster catback..... My bonestock 2v engine had been through 2 years of NX 100 shot, 3 years running 8-12lbs vortech s-trim, got into boost daily while racing on the weekends, had 157,000 miles on it, and was running like new

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