What modification to launch my automatic?

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01mgvert

New Member

Jan 12, 2004

302

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0

Apr 27, 2004

#1

• Apr 27, 2004

• #1

Using a G-tech, my best 60 ft time was 2.150 seconds. This is launching with a 2000 rpm power-brake. If I go much over 2000 rpms, the tires break loose. How can I modify my automatic to launch better?

 

Dark Knight GT

I can't get it up......ok that didn't sound right.

May 26, 2003

3,653

2

56

Ozark, Missouri

Apr 27, 2004

#2

• Apr 27, 2004

• #2

Read my signature, both the mods already done and the "to come" mods.

 

Islander03GT

New Member

Jan 19, 2004

470

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Simi Valley, Ca

Apr 27, 2004

#3

• Apr 27, 2004

• #3

why does it seem like you're launching wayy too high?

 

Dark Knight GT

I can't get it up......ok that didn't sound right.

May 26, 2003

3,653

2

56

Ozark, Missouri

Apr 27, 2004

#4

• Apr 27, 2004

• #4

Because your suppost to launch an automatic at idle unless if you have a transbrake.

 

R

rob1

New Member

Mar 18, 2004

94

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0

Indiana

Apr 27, 2004

#5

• Apr 27, 2004

• #5

Does that Jerry mod kit help? If you install a shift kit is it difficult? Do you have to take out and tear apart the entire tranny? Is the stock tranny good enough to keep using if you upgrade to a shift kit? Don't mean to hijack thread but this is something I to have been wondering about.
Thanks

 

Dark Knight GT

I can't get it up......ok that didn't sound right.

May 26, 2003

3,653

2

56

Ozark, Missouri

Apr 27, 2004

#6

• Apr 27, 2004

• #6

rob1 said:

Does that Jerry mod kit help? If you install a shift kit is it difficult? Do you have to take out and tear apart the entire tranny? Is the stock tranny good enough to keep using if you upgrade to a shift kit? Don't mean to hijack thread but this is something I to have been wondering about.
Thanks

Click to expand...

The Jerry mod shift kit is the best mod for the money. You use your stock valve body, enlarge the holes in the seperator plate, and modify the accumulator pistons. Its the best and most of all, its safe for your transmission since it was designed by Jerry Wroblewski, an ex-Ford engineer who actually desinged the 4r70w transmission itself. The rest of the transmission will support it. Its not too difficult to install, however, you can mess up your seperator plate. I let a pro do mine....the second time. First time, I drilled the holes wrong cause I used a hand drill. I let this guy do it and he used a drill press. He also got it right cause he's done valve body work for years. He's actually a good friend of Jerry's. Anyhow, the Jerry mod is the best **** kit out IMHO. If you have any questions, feel free to ask.

 

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01mgvert

New Member

Jan 12, 2004

302

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Apr 27, 2004

#7

• Apr 27, 2004

• #7

Dark Knight GT said:

Because your suppost to launch an automatic at idle unless if you have a transbrake.

Click to expand...

Anyone else power-braking? Or does everyone launch their automatic from idle?

 

GoneMad96

New Member

Feb 23, 2004

262

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Cali

Apr 27, 2004

#8

• Apr 27, 2004

• #8

launch from idle and get a bad ass torque converter!!!!

 

0

007

Founding Member

Jan 29, 2002

3,287

24

69

Broke

Apr 27, 2004

#9

• Apr 27, 2004

• #9

Rims and tires.

BTW What pressure are your running your tires at?

 

Defleshed

Satanic Mechanic

Nov 30, 2003

10,569

1

0

In Torment, In Hell

Apr 27, 2004

#10

• Apr 27, 2004

• #10

i dunno, i launched from idle and killed a pretty heavily modded LS1 WS6.
yeah thats the other thing... burn the tires up before you launch to get them sticky, run small rims, fat sidewall and bias ply DOT approved tires with little pressure in em, you'll hook like a mofo. Good luck driving on the highway though.

 

J

jas142

Founding Member

Feb 11, 2002

1,358

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Apr 27, 2004

#11

• Apr 27, 2004

• #11

If you're launching a 99+ with a 4r70w from 2000 rpms you should definately be spinning, which would slow down your 60 foot. Launch from idle. Also, your traction control is turned off right?

 

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01mgvert

New Member

Jan 12, 2004

302

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Apr 27, 2004

#12

• Apr 27, 2004

• #12

jas142 said:

If you're launching a 99+ with a 4r70w from 2000 rpms you should definately be spinning, which would slow down your 60 foot. Launch from idle. Also, your traction control is turned off right?

Click to expand...

Even though I have 4.10 gears, I think that the weight of my convertible and my new Sumitamos help me to hook up. If I accelerate from idle, I rarely spin. The car just jumps out of the hole. Regarding traction control, I disabled it using my Diablo Predator.

 

O

outlaww77

New Member

Jan 19, 2004

35

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0

West Palm Beach

Apr 27, 2004

#13

• Apr 27, 2004

• #13

I do and 14.1 is the time 97gtvert! GET A STALL IT THE BEST THING FOR YOUR CAR! 15.0 then put the stall in 14.1. Your car will be so fast than!

 

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01mgvert

New Member

Jan 12, 2004

302

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Apr 27, 2004

#14

• Apr 27, 2004

• #14

Dark Knight GT said:

Read my signature, both the mods already done and the "to come" mods.

Click to expand...

I see that you have the Precision Industries Stallion torque converter. From my research, this is one of the best. They claim to drop your 60 ft time by .2 seconds and your 1/4 mile time by .5 seconds. Did you find this to be true? Also, is it worth the cost ($695 plus installation)?

 

Islander03GT

New Member

Jan 19, 2004

470

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Simi Valley, Ca

Apr 27, 2004

#15

• Apr 27, 2004

• #15

i launch mine at about 1000 rpms... just light gas pedal pressure while holding the brake. worked best out of anything I tried.

 

O

outlaww77

New Member

Jan 19, 2004

35

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West Palm Beach

Apr 27, 2004

#16

• Apr 27, 2004

• #16

I pay 300 that it!

 

O

outlaww77

New Member

Jan 19, 2004

35

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0

West Palm Beach

Apr 27, 2004

#17

• Apr 27, 2004

• #17

Call Hemlock Transmission 1-561-793-0993 $300 yes $600 nononon

 

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01mgvert

New Member

Jan 12, 2004

302

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Apr 27, 2004

#18

• Apr 27, 2004

• #18

outlaww77 said:

I pay 300 that it!

Click to expand...

The $695 was for the torque converter. I have no idea what install costs.

 

S

slow87GT

Founding Member

Jun 5, 2000

162

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0

Tonawanda NY

Apr 27, 2004

#19

• Apr 27, 2004

• #19

dr's

3500stall

 

R

RacerGT

Founding Member

Jun 28, 2002

2,371

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St. Charles, Missouri

Apr 28, 2004

#20

• Apr 28, 2004

• #20

slow87GT said:

dr's

3500stall

Click to expand...

Yup, I cut 1.8x 60' on DRs with a 3500 stall and 4.10s... could be better with more power. I usually launch at 1100rpms. Hooks up pretty good.