How exactly do u guys powershift?
Melting Slicks
Joined: Dec 2004
Posts: 2,137
Likes: 5
From: Howard PA
Originally Posted by GIJoe
so within a split second, you will be letting off the gas just a tad, pressing the clutch, and shifting ALL AT THE SAME TIME!
What I think power shifting is when you don't lift the gas at all and try to shift fast enough so the revs don't go overboard. I can tell you that's impossible in my car.
As far as the motor not revving past the limiter, anyone care to explain how my LT4 can reach 7 grand when the limiter is 6500?
The baseball is a really poor analogy. Spinning a motor up is nothing like throwing a baseball.
Team Owner
Joined: Jun 2001
Posts: 26,196
Likes: 0
From: Orlando FL
St. Jude Donor '08-'09
Originally Posted by jserio
GI, We're workin the short shift. 
I am having the guys that make the shift boots in the for sale section make me a custom boot for my shorter shifter too that color matches my car
Racer
Joined: Apr 2004
Posts: 487
Likes: 0
From: Huntsville AL
Originally Posted by ALLT4
Well hell I do this all the time but that's not power shifting as I understand it.
What I think power shifting is when you don't lift the gas at all and try to shift fast enough so the revs don't go overboard. I can tell you that's impossible in my car.
What I think power shifting is when you don't lift the gas at all and try to shift fast enough so the revs don't go overboard. I can tell you that's impossible in my car.
Melting Slicks
Joined: Oct 2000
Posts: 3,426
Likes: 4
From: Heidelberg PA
Cruise-In V Veteran
Originally Posted by rocco16
Just as a baseball does not continue to accelerate once it's left the pitcher's hand, an engine will not continue to increase its revs once the limiter kicks in...if that's what you are talking about.
All Show, one tip I can give you when you are just learning to powershift: don't be tentative!!! That's how you miss shifts.
You have to GO for it....100% even on the first try. Hint: you have to try to break the shift lever off.
Larry
code5coupe
All Show, one tip I can give you when you are just learning to powershift: don't be tentative!!! That's how you miss shifts.
You have to GO for it....100% even on the first try. Hint: you have to try to break the shift lever off.
Larry
code5coupe
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Advanced
Joined: Jan 2006
Posts: 60
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From: NY NY
Blacktye
All the Guys got it right w/re/to nailed to the floor. Anybody ever do w/o clutch ? (yes I know you're rippin' it thru gears, and will POROBABLY destroy synchros - been there done that, BUT it can be done, and it is a REAL powershift, as tapping the clutch is a SPEED shift)
Bottom line - my BB 67 w/ M-22 WILL hang in there, I am told a tremec will. Wouldn't bet on a 4 + 3, unless you're REAL fast. For the unitiated, TRASHING your trans IS VERY likely. Prequisite for sure - You CAN"T be afraid or have ANY doubt.There is no turning back
Bottom line - my BB 67 w/ M-22 WILL hang in there, I am told a tremec will. Wouldn't bet on a 4 + 3, unless you're REAL fast. For the unitiated, TRASHING your trans IS VERY likely. Prequisite for sure - You CAN"T be afraid or have ANY doubt.There is no turning back
Drifting
Joined: Feb 2004
Posts: 1,277
Likes: 1
From: Santa Maria CA
I powershifted with the stock shifter great! Never had problems,ever! But ever since I installed the B&M Ripper,I can't powershift 1-2 anymore,shifter sucks azz...anyone want it when I pull it out?......
Race Director
Joined: Dec 2002
Posts: 13,348
Likes: 233
From: SCMR Rat Pack'r Charter Member..Great Bend KS
Originally Posted by ALLT4
The baseball is a really poor analogy. Spinning a motor up is nothing like throwing a baseball.
Au contrare'. It's exactly the same thing....and it's pure physics:Application of energy;pitchers arm/ combustion pressure...accelerates an object;baseball/piston...until energy ceases; ball leaves hand/pressure drops with no spark or no fuel...object stops accelerating and starts decelerating, instantly. Neither can keep accelerating because there is no longer anything to make it accelerate.
Simple...and you can believe that's the way it really does work.
Larry
code5coupe
Last edited by rocco16; Sep 14, 2006 at 10:47 AM.
Thread Starter
Pro
Joined: Aug 2006
Posts: 682
Likes: 1
From: SpringHill florida
Originally Posted by GIJoe
I need to make a video on how to do this. Words just can't describe, you really have to show someone in person what all goes into it.
If you want to start out practicing, just do it with lower RPM shifts. like 3-4, 4-5 shift and do it in lower RPMs, like 2500-3000 range so you don't get your revs up. You can ALSO do this while the car is off, just set the ebrake and have fun shifting away.
The trick is to shift it without letting off the gas. Now of course if you have your pedal floored, its going to over-rev when you let off the clutch. The trick to practice is this: KNOW where your "sweet spot" for the clutch is, that little spot where it grabs. Press the clutch down until you are at that spot, but just before getting there and before you shift, let off the gas JUST a tad bit and keep your toe ready to let off the gas completely in case you miss shift or something. Now... AS FAST AS YOU CAN, shift into the next gear (slam the shifter quick and fast) and before you finish letting the clutch back out, hit the gas again full throttle.
I can do this so quickly that it sounds just like an automatic shifting with zero shifting lag.
so within a split second, you will be letting off the gas just a tad, pressing the clutch, and shifting ALL AT THE SAME TIME!
really, word's can't quite explain HOW to do it, you have to SEE it in person to know what we are talking about.
BTW, if you don't have one aready, GET A SHORT SHIFTER!
If you want to start out practicing, just do it with lower RPM shifts. like 3-4, 4-5 shift and do it in lower RPMs, like 2500-3000 range so you don't get your revs up. You can ALSO do this while the car is off, just set the ebrake and have fun shifting away.
The trick is to shift it without letting off the gas. Now of course if you have your pedal floored, its going to over-rev when you let off the clutch. The trick to practice is this: KNOW where your "sweet spot" for the clutch is, that little spot where it grabs. Press the clutch down until you are at that spot, but just before getting there and before you shift, let off the gas JUST a tad bit and keep your toe ready to let off the gas completely in case you miss shift or something. Now... AS FAST AS YOU CAN, shift into the next gear (slam the shifter quick and fast) and before you finish letting the clutch back out, hit the gas again full throttle.
I can do this so quickly that it sounds just like an automatic shifting with zero shifting lag.
so within a split second, you will be letting off the gas just a tad, pressing the clutch, and shifting ALL AT THE SAME TIME!
really, word's can't quite explain HOW to do it, you have to SEE it in person to know what we are talking about.
BTW, if you don't have one aready, GET A SHORT SHIFTER!
Melting Slicks
Joined: Dec 2004
Posts: 2,137
Likes: 5
From: Howard PA
Originally Posted by rocco16
Au contrare'. It's exactly the same thing....and it's pure physics:Application of energy;pitchers arm/ combustion pressure...accelerates an object;baseball/piston...until energy ceases; ball leaves hand/pressure drops with no spark or no fuel...object stops accelerating and starts decelerating, instantly. Neither can keep accelerating because there is no longer anything to make it accelerate.
Simple...and you can believe that's the way it really does work.
Larry
code5coupe
Race Director
Joined: Dec 2002
Posts: 13,348
Likes: 233
From: SCMR Rat Pack'r Charter Member..Great Bend KS
Originally Posted by ALLT4
What ever genius.
And here I was hoping for an intelligent discussion....
Thanks for playing, anyway.
Larry
code5coupe
Melting Slicks
Joined: Dec 2004
Posts: 2,137
Likes: 5
From: Howard PA
So you're trying to tell when the rev limiter kicks in the engine instantly stops gaining rpms, like it hits a brick wall?
I'm saying that doesn't happen, I see my tach go way beyond my rev limiter when my tires let loose, or even just pegging the throttle. Why it happens doesn't make any difference. You can try to throw all the logic into it you want, in the real world the engine can rev past the limiter.
You guys go ahead and power shift, when we start seeing threads about "How to contact ZF Doc" and "Why are my push rods bent" I'll laughing my a$$ off.
It just doesn't make any sense to power shift. So you may lose a tenth or two, and I doubt that, big deal. What, is you car strictly a drag car that you don't care if you miss one and break something. You have an unlimited budget to replace things as they break, and they will. You're shooting for the fastest street stick car out there?
Why not just shift as quickly as you can and be sensible about things?
I'm saying that doesn't happen, I see my tach go way beyond my rev limiter when my tires let loose, or even just pegging the throttle. Why it happens doesn't make any difference. You can try to throw all the logic into it you want, in the real world the engine can rev past the limiter.
You guys go ahead and power shift, when we start seeing threads about "How to contact ZF Doc" and "Why are my push rods bent" I'll laughing my a$$ off.
It just doesn't make any sense to power shift. So you may lose a tenth or two, and I doubt that, big deal. What, is you car strictly a drag car that you don't care if you miss one and break something. You have an unlimited budget to replace things as they break, and they will. You're shooting for the fastest street stick car out there?
Why not just shift as quickly as you can and be sensible about things?
Last edited by ALLT4; Sep 15, 2006 at 10:14 AM.
Melting Slicks
Joined: Feb 2006
Posts: 2,753
Likes: 15
From: backwoods upstate ny
1. purchase spare transmission.
2. store rollback towing phone number in cell phone.
3. verify medical coverage is in effect (in case clutch explodes and cuts your foot off)
4. plant right foot on gas pedal and stab clutch with left foot as you slam the shift lever from gear to gear.
5. note smile on my face (i'm laughing AT you, dummy)
2. store rollback towing phone number in cell phone.
3. verify medical coverage is in effect (in case clutch explodes and cuts your foot off)
4. plant right foot on gas pedal and stab clutch with left foot as you slam the shift lever from gear to gear.
5. note smile on my face (i'm laughing AT you, dummy)
Burning Brakes
Joined: Aug 2006
Posts: 1,189
Likes: 0
From: Houston PA
Rev limiter just cuts the fuel off. Its a moot point however, if the motor doesn't break, something else will. Driving a car like that often, be ready to fix it often. Yea, I'm laughing at you. And if I fall on your oil slick, I'm sueing.
Yea, I'm laughing at you. And if I fall on your oil slick, I'm sueing.
