ran 13.4 with KB???

B

Bundmar

Founding Member

Mar 22, 2002

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Ontario, Canada

Jul 21, 2005

#1

• Jul 21, 2005

• #1

I went to the track for the first time with my KB installed and only ran a
13.4 @ 112MPH. I know I need DR's bad, but still shouldnt I do better on street tires?
what is everyone else with the KB 9PSI running at the track?

60' 2.347
1/4 13.472
MPH 112.19

Ive dynoed at 387RWHP and 390RWTQ

 

slo65

New Member

May 26, 2003

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Southern California

Jul 21, 2005

#2

• Jul 21, 2005

• #2

those 60's are pretty bad, just get some real dr's like some mt's or something, cut a 1.7 and u have a mid 12 second run

 

streetstang03

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Dec 27, 2003

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the dark side of the moon/home of the 1999, 2003,

Jul 21, 2005

#3

• Jul 21, 2005

• #3

definetly need to get that 60' down.

 

sgarlic

Founding Member

Apr 21, 2001

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Jul 21, 2005

#4

• Jul 21, 2005

• #4

What RPM did you launch at? Did you slip the clutch in to first or just drop it?

 

ADRENLN

Active Member

Apr 16, 2003

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NJ

Jul 21, 2005

#5

• Jul 21, 2005

• #5

i still think that you should be able to run better then that with all that power. yes if you get the 60 down you will run better thats obvious.

a regular corvette for ex. can run in the 12s with no mods and less power, why is this? is it just that their weigh distribution is that much better? i would think that you be able to smoke a regular vette with that kind of power.

 

dkshadow

Banned

May 12, 2003

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TEXAS

Jul 21, 2005

#6

• Jul 21, 2005

• #6

No doubt youre having traction problems, just look at your trap speed. How about some LCA/UCA and DRs as well? This would be a good time to upgrade to 31 spline

 

tomustang

Psychotic Member

Founding Member

Jun 8, 2000

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McLean Hospital

Jul 21, 2005

#7

• Jul 21, 2005

• #7

You ran 112 and your complaining? Need to work on your launch.

 

0

02 Mineral Gray

New Member

Apr 1, 2005

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Atlantic City, NJ

Jul 21, 2005

#8

• Jul 21, 2005

• #8

Get those 60 times down and you will be happy..

 

mogs01gt

Founding Member

Jul 22, 2002

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Ohio

Jul 21, 2005

#9

• Jul 21, 2005

• #9

not a bad trap speed for a heavier vert. Well now even heavier in the front with that KB on it.

it will be hard launching with all that torque I bet.

 

back_in_black

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Apr 12, 2003

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frederick, MD

Jul 21, 2005

#10

• Jul 21, 2005

• #10

I know if you put a set of decent dr's and work on your launch you will do much better

 

StratGT

Founding Member

Oct 11, 2001

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Mississauga, Canada

Jul 21, 2005

#11

• Jul 21, 2005

• #11

You got 4.10's and a KB at 9psi. You'll need sticky tires for sure. Have you considered dropping down to a 3.55 gear?

 

back_in_black

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Apr 12, 2003

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frederick, MD

Jul 21, 2005

#12

• Jul 21, 2005

• #12

StratGT said:

You got 4.10's and a KB at 9psi. You'll need sticky tires for sure. Have you considered dropping down to a 3.55 gear?

Click to expand...

good point, kb reccomends 3.73's, I do think the 4.10's are too high for all the low end torque.

 

AmBo

Active Member

Feb 3, 2004

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New Jersey

Jul 21, 2005

#13

• Jul 21, 2005

• #13

omg 4.10s with a 9psi Kenny kit?! Wasn't it wierd shifting into 5th about 3/4 way down the track?

 

Z28 KILR

Founding Member

Aug 4, 2001

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Columbus, OH

Jul 21, 2005

#14

• Jul 21, 2005

• #14

I ran 13.2 at 111 mph with 3.73's and a Vortech S-trim. This was on street tires also. Get some Nittos and be in the mid to high 12s.

 

B

Bundmar

Founding Member

Mar 22, 2002

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Ontario, Canada

Jul 21, 2005

#15

• Jul 21, 2005

• #15

well I have my rev limiter raised so I can finish the 1/4 in fourth,
Ive ordered 31 spline axles, Nitto DR's and Steeda UCA/LCA so Im hoping to get to mid 12's,
no traction in 1st or 2nd, Im letting the clutch slip cant hammer on it or it just spins,
Im happy with the MPH but want to run mid 12's
there was a S/C Z06 and he was running 12.4 @ 119
Ive beat stock 03/04 cobras on the street but Its alot harder on the track
Ill post what I run with the Dr's installed

 

Mike97gt

it doe snot

Founding Member

Jan 26, 1999

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the people's republic of massachusetts

Jul 21, 2005

#16

• Jul 21, 2005

• #16

StratGT said:

You got 4.10's and a KB at 9psi. You'll need sticky tires for sure. Have you considered dropping down to a 3.55 gear?

Click to expand...

no need too do that.. why not just get a taller slick/ drag radial. this acts like lowering the raito no need to demod the car.

 

T

tooblue02

New Member

May 10, 2004

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Groton Connecticut

Jul 21, 2005

#17

• Jul 21, 2005

• #17

.1 sec in the 60 = .2 in the 1/4, I ran a 1.86 60' and went 12.2 at 114, it's all in your 60. I also ran a 13.9 @ 112 with a 2.8 60' (epping is awsome!)

 

S

showstopper2

Founding Member

Apr 16, 2001

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New Bedford, Ma.

Jul 22, 2005

#18

• Jul 22, 2005

• #18

I went a 12.7@113 my first time out with over 400rwhp and 400tq on the stock Goodyear tires. traction was very limited and I also managed a 2.0 60ft. you need to control the gas pedal some...

next month I hope to smash that time on DR's with a new clutch and built rear on board.

 

99RioRedVert

New Member

Feb 13, 2003

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Chesapeake, VA

Jul 22, 2005

#19

• Jul 22, 2005

• #19

With 390 rwhp and street tires (on 18" rims) I went 13.4 @ 112 with a 2.4 60' time. On ET Streets and everything else the same, I went 12.2 @ 114 with a 1.7 60' time.

Traction is definitely the problem.

As far as gearing goes, I have 4.10 gears. For me, they are the perfect gear on the track. They help me stay in the powerband. My power doesn't come on strong until 4k+ rpm and I shift @ 6,500 rpm. With a KB and limited traction, 4.10 might not be as ideal for you. But, as long as you can get all the power to the ground (ie traction) and have a high enough rev limiter to stay in 4th through the traps, a numerically higher gear ratio will always be superior.