Pontiac GTO 2004-2006 - Powershifting.




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chevbon
02-21-2012, 10:14 PM
Ok, so my quarter time was REALLY slow, so I was considering powershifting. Never did it before for fear of breaking something. How much will it really help and what are the odds that I obliterate my clutch?


JUSTINSWS6
02-21-2012, 10:17 PM
Its also referred to as "granny shifting". Its not good makes a god awful noise and bad on clutch and tranny. It will help some. It would be faster if you have a bird or catfish. What was the time?

chevbon
02-21-2012, 10:41 PM
14 :(


Rob
02-22-2012, 05:56 AM
It takes practice. If you do it right, you can gain a quarter second or so. I used to do it in my WS6 all the time. I would do it in other people's car back then also and be roughly .2-.3 faster than their times.
If done right, you don't tear up anything. The clutch does wear a little faster but that's about it. If not done right though, you can start messing up quite a bit of things. Synchros and clutch are usually the first to go. Then the trans starts letting go. I never had any of those problems.
Just takes practice and lots of hand/feet coordination. FWIW, I don't do it in the goat.

gconnoyer
02-22-2012, 11:21 AM
Practice and hand/feet coordination. Practice shifting just as fast as you can, and then take lifting off the gas pedal out of the equation. I actually find (atleast in my head) that I move the stick faster just using the clutch.

The only problem you might encounter with a GTO (which I've had) is horrible wheel hop going from 1-2 if its not a good prepped surface with sticky tires....and thats when stuff starts to go wrong.

svede1212
02-22-2012, 12:16 PM
You can get well below 14 without power shifting. Being from Delaware you shouldn't have problems with DA either. You need to get your launch down to get the 60' below 2.0 .
That may take tires depending on track conditions. With just quick normal shifts and a 1,000 DA I used to get my bone stock '04 down in the 13.3-13.4 range.

chevbon
02-22-2012, 01:13 PM
What do you launch at?^

gconnoyer
02-22-2012, 04:13 PM
Well first what is done to your car?

Engine, suspension, tires, etc.... I launch at 6k

chevbon
02-22-2012, 04:42 PM
Nothing...exhaust. Had some shitty tires, will have new ones this time around. Just noticed you have slicks lol

gconnoyer
02-22-2012, 07:18 PM
Lol yeah.
Get nitto 555r drag radials.

When i just had a cai and catback i could launch mine at about 4k, ride the clutch and would pull mid-high 1.8x 60's

chevbon
02-22-2012, 07:39 PM
Lol yeah.
Get nitto 555r drag radials.

When i just had a cai and catback i could launch mine at about 4k, ride the clutch and would pull mid-high 1.8x 60's

Working on it...They're on my list!!

OVRPWRD
02-23-2012, 11:55 AM
With your power its all in the first 60'. Granted power shifting might knock off a 10th or 2 but like previously stated, the wheel hop will probably be horrible and possibly break something. Get a set of drag radials and practice, practice practice. good luck!!

svede1212
02-23-2012, 12:17 PM
With street tires inflate to around 24-25# in the rear and I do 40# in the front to minimize rolling resistance. Drive around the water box and then back up close to it and do a little burn out to clean the tires. Doing a full John Force burnout on street tires is counter productive. I used to launch around 4k. The trick, especially with stock type tires, is to get just a little bit of a bog and then give it gas but not enough to make it spin. Track prep will determine that. When you just want to just drop the clutch and mash it it's had to do.

chevbon
02-23-2012, 01:03 PM
With street tires inflate to around 24-25# in the rear and I do 40# in the front to minimize rolling resistance. Drive around the water box and then back up close to it and do a little burn out to clean the tires. Doing a full John Force burnout on street tires is counter productive. I used to launch around 4k. The trick, especially with stock type tires, is to get just a little bit of a bog and then give it gas but not enough to make it spin. Track prep will determine that. When you just want to just drop the clutch and mash it it's had to do.

I usually run around 18 in the rears and leave the fronts alone... think I should use more pressure?

Rob
02-24-2012, 06:32 AM
I usually run around 18 in the rears and leave the fronts alone... think I should use more pressure?On real street tires, yes. I ran 32-33psi in every car I've had that ran street tires. That seemed the best pressure everytime I ran. Could cut sub 2.0 times in the last 4 cars I've owned running that way. Anything less and anything more would cause higher short times.
Its all about contact patch. Do a burnout on the street and look at the marks. Narrow marks will mean you are overinflated. Two outer marks will be underinflated. Even mark that is the width of your tires, perfect.

clonedws6
02-26-2012, 09:56 AM
I broke the stocker shifter powershifting. That has been the only casualty so far lol

JoeyG2
02-29-2012, 11:40 PM
Broke my driveshaft power shifting.. Wheelhop

V-seriesTech
03-01-2012, 07:46 PM
Quick shifts, be it speed shifting or power shifting are absolutely crucial in drag racing. Crucial. Practice either, practice both. It will make or break you.