ET TROUBLES

B

bz393

New Member

Sep 24, 2006

29

0

2

maryland

Jul 30, 2008

#1

• Jul 30, 2008

• #1

I have a 89 lx with a new motor that I just completed. It consists of a fresh 302, cobra GT-40 heads, b-303, cobra 1.7 rr, cobra upper and lower maniflod, 24# injectors, 73mm c&l maf, adjustable fpr, under drive pullys, cold air intake. Drive line consists of a pro 5.0 shifter 3:73s hpm mega bite jr's and an eibach drag launch kit. The best et I can cut is 13.2 @ 107 mph. I have heard people running 12.50s with the same stuff. WTF is going on here, any ideas

 

jhonda

Member

Jul 22, 2003

125

1

16

Huntersville NC

Jul 30, 2008

#2

• Jul 30, 2008

• #2

with that kind of trap speed it seems like your 60ft isn't that good?

 

G

GTOreturns

Well-Known Member

Oct 1, 2003

51

17

59

West Coast Best Coast

Jul 30, 2008

#3

• Jul 30, 2008

• #3

Yeah whats your 60ft time?

 

5.0Droptop

...all those nights we shared, and you're a dude??

Special Agent Mukity-Muck Whats in Charge Round Here

May 15, 2002

1,785

1,130

233

Indiana

Jul 30, 2008

#4

• Jul 30, 2008

• #4

hard to say whats going on. Post up your 60 ft times and all related info .

 

25thmustang

Mustang Master

Sep 5, 2003

2,021

85

99

Montgomery, NY

Jul 30, 2008

#5

• Jul 30, 2008

• #5

I've been 12.56 with only 105.8 mph trap. It's all in the tires and driving.

 

B

bz393

New Member

Sep 24, 2006

29

0

2

maryland

Jul 30, 2008

#6

• Jul 30, 2008

• #6

60 ft. times are in the 1.90s. on street tires. I put on my slicks and launched at 4,500 and it just hooked and died. I cut a 2.60 60 ft and im not even going to tell you the et

 

R

reefbluevoodo

New Member

May 31, 2008

9

0

0

mississippi yall

Jul 31, 2008

#7

• Jul 31, 2008

• #7

i have same combo but tfs heads and went 12.60 @108.5 with a 1.80 sixty on 17 inch street tires not drag radials. 26 or 28 inch slicks? 26 put it on the limiter and dump the clutch 1.7 to 1.6 sixty and you should hit your goal!

 

Foxfan88

My Grandpa has great wood.

Sep 13, 2004

2,487

4

0

Miami, Ok

Aug 1, 2008

#8

• Aug 1, 2008

• #8

the mph is good for the combo and is certainly capable of 12.50s

are you having better luck launching down low??

if the car is bogging and dying with slicks at 4500 try lauching at 5500 or 6000.
i used to have problems gettign bad lauches, i was trying 3000-3500 and it just didnt work, one pass i gave it all and launched at 5500 and the car came alive then, then the good e/ts starting coming.

 

FastDriver

I was uncomfortably high & wearing a helmet

SN Certified Technician

Sep 5, 2001

6,103

2,711

224

Vass, NC

Aug 2, 2008

#9

• Aug 2, 2008

• #9

Like all others mentioned, 107mph is damn strong and well tuned for that combination. You just need to hook and shift well and you're all set.

Chris

 

25thmustang

Mustang Master

Sep 5, 2003

2,021

85

99

Montgomery, NY

Aug 2, 2008

#10

• Aug 2, 2008

• #10

Also 13.2 @ 107 isn't bad for street tires. Theres a little left in it on the radials with that mph, but not much. High 12s maybe, but bolt a tire on and mid 12s wouldnt be an issue.

 

B

bz393

New Member

Sep 24, 2006

29

0

2

maryland

Aug 2, 2008

#11

• Aug 2, 2008

• #11

If Irun my slicks again at tire pressure should I run? I had them t 12psi and at the 1000 ft mark the car swayed all over the place so bad I had to let out or i'd have been in the wall or in the other lane. So maybe a lil more psi and a higher launch huh??????