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Re: Power Shift my 4-speed?
[Re: Thackdaddy]
#493734
10/12/09 12:16 AM
10/12/09 12:16 AM
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Joined: Jan 2005
Posts: 3,699
Newport, Mi
Evil Spirit
master
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master
Joined: Jan 2005
Posts: 3,699
Newport, Mi
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Quote:
Quote:
And it seems like opinions vary on what the lack of power shifting vs lifting a bit is doing to my actual et?
Well, in either case above you are not power shifting, once you push the clutch you loose the power part.
Back in the late 60's when sticks were a lot more common that today, the racers that I knew called POWERSHIFTING just pulling the handle without using the clutch or lifting the gas; SPEEDSHIFTING was slightly using the clutch and leaving the gas floored, and GRANNYSHIFTING was clutching and lifting the gas. Different guys call it differently, like the posi/sure-grip/traction-lock nicknames. I never saw too many guys actually powershift without using a modified trans - as in modified blocker rings and sliders. I also learned a trick we called button-shifting - you would put a switch in the shifter ball that would short the coil when pushed. As you shifted. you tapped the button, which made the motor nose over, and you could shift the trans easier. Many bikes still do it today; it's tied into the airshifter button; the tell-tale is the pop through the pipes from the ignition cycling and burning the gas out of the pipes.
Free advice and worth every penny...
Factory trained Slinky rewinder.........
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Re: Power Shift my 4-speed?
[Re: toddd]
#493736
10/12/09 12:57 AM
10/12/09 12:57 AM
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Joined: Mar 2008
Posts: 883
Affton MO
qwkmopardan
super stock
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super stock
Joined: Mar 2008
Posts: 883
Affton MO
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Quote:
Your clutchs' in-ability to slip.
For sure the posters problem with 60 ft. If you had a 5.88 rear gear and a 3.09 low gear in trans. you could probably side step the clutch.
You cant just dump the clutch. You need to let it out in stages. I have made a couple passes in my SRT-8 Challenger and let it out in 3 stages. Dumping it all at once was a horible 2.11 60 ft. Then in stages I got a 2.00 60 ft. Motor still bogged so next trip I will try a higher RPM and hopefully not find tire spin. Car went 13.20 at 108.50 MPH with the 2.11 60ft. On the 2nd pass with the 2.00 60 ft. I missed 2nd gear, and the staging lane were closed so I wont get another chance until tommorow.
Last edited by qwkmopardan; 10/12/09 01:01 AM.
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Re: Power Shift my 4-speed?
[Re: qwkmopardan]
#493737
10/12/09 01:10 AM
10/12/09 01:10 AM
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Joined: Jan 2005
Posts: 3,699
Newport, Mi
Evil Spirit
master
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master
Joined: Jan 2005
Posts: 3,699
Newport, Mi
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Like I said, I'm sure that there is many different nicknames for shifting styles, just like for posi units and rear carriers. Posi, Traction Loc, Suregrip, Limited Slip, Pumpkin, Chunk, 3Rd Member, etc. I'm simply explaining what we called it, after someone else brought it up. I do remember my uncle shifting his 68 GTX with a well prepped Hemi box many times; no clutch or lift on 1-2, tap clutch and no lift on 2-3, and no clutch or lift on 3-4. After the vertical gates became popular, it was "Full Monty" on all of them. Brutal on trans, and it helped that he never had todays tires, and he still broke a lot of parts. As for me, I cleaned out 2nd on about my third try at powershifting my 66 T-10 Mustang, and since I didn't have the deep parts bin that he did, I went the more economcal way and did what WE called speedshifting - toe clutch with gas floored, pull handle, repeat as necessary. 
Free advice and worth every penny...
Factory trained Slinky rewinder.........
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Re: Power Shift my 4-speed?
[Re: Evil Spirit]
#493739
10/12/09 01:48 AM
10/12/09 01:48 AM
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Joined: Feb 2007
Posts: 1,025
Las Vegas, NV
dodgeboy11
super stock
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super stock
Joined: Feb 2007
Posts: 1,025
Las Vegas, NV
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Am I wrong in thinking your shifting has nothing to do with the 60' due to the fact that you should cover that first 60' in first gear or darn close to it. The only experience I have with shifting quickly is watching my instructor at school (I've since graduated, long long time ago it seems, where does the time go?) shift his 99 camaro with a jerico transmission. I know they had a clutch with adjustable spring pressure points and they would crawl under it at the track to get the right amount of slippage without it being excessive or too tight and bogging the motor. Here's a video, I know it's not a mopar, but this thing is impressive being N/A and a 4 gear stick. http://www.youtube.com/watch?v=3y6ZgKte3PY&feature=related
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Re: Power Shift my 4-speed?
[Re: dodgeboy11]
#493740
10/12/09 09:57 AM
10/12/09 09:57 AM
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Joined: Mar 2005
Posts: 2,172
Ohio
theclutcher
top fuel
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top fuel
Joined: Mar 2005
Posts: 2,172
Ohio
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Quote:
Am I wrong in thinking your shifting has nothing to do with the 60' due to the fact that you should cover that first 60' in first gear or darn close to it.
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Post deleted by moparts
[Re: SCATPK]
#493741
10/12/09 11:51 AM
10/12/09 11:51 AM
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Anonymous
Unregistered
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Anonymous
Unregistered
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Re: Power Shift my 4-speed?
[Re: SCATPK]
#493746
10/12/09 10:28 PM
10/12/09 10:28 PM
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Joined: Feb 2005
Posts: 4,313
Prospect, PA
BSB67
master
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master
Joined: Feb 2005
Posts: 4,313
Prospect, PA
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Quote:
As far as my 60ft time is concerned I dont think my shifting has anything to do with it as I should cover it in 1st gear. Again it seems like there are many opinions on how to shift a manual trans car and many different ways to break parts. I have avoided breaking anything and would like to keep it that way so I will proceed with caution on my next outing at the track.
I think powershifting would pick you up 2 or 3 tenths - 
It'll be hard on parts.
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Re: Power Shift my 4-speed?
[Re: Evil Spirit]
#493747
10/13/09 12:08 PM
10/13/09 12:08 PM
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Joined: Feb 2009
Posts: 182
NW of Indy
Thackdaddy
member
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member
Joined: Feb 2009
Posts: 182
NW of Indy
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Quote:
Quote:
Quote:
And it seems like opinions vary on what the lack of power shifting vs lifting a bit is doing to my actual et?
Well, in either case above you are not power shifting, once you push the clutch you loose the power part.
Back in the late 60's when sticks were a lot more common that today, the racers that I knew called POWERSHIFTING just pulling the handle without using the clutch or lifting the gas; SPEEDSHIFTING was slightly using the clutch and leaving the gas floored, and GRANNYSHIFTING was clutching and lifting the gas. Different guys call it differently, like the posi/sure-grip/traction-lock nicknames. I never saw too many guys actually powershift without using a modified trans - as in modified blocker rings and sliders.
I remember using the same shifting terminology, but have been trying for a few days to remember the modifications made for power shifting. I think you did some welding here and grinding there but am really drawing a black. I am pretty sure Rick Allison built a few (or many).
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Re: Power Shift my 4-speed?
[Re: BSB67]
#493748
10/13/09 01:28 PM
10/13/09 01:28 PM
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Joined: Jan 2003
Posts: 6,570
San Francisco Ca
SCATPK
OP
master
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OP
master
Joined: Jan 2003
Posts: 6,570
San Francisco Ca
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Quote:
Quote:
As far as my 60ft time is concerned I dont think my shifting has anything to do with it as I should cover it in 1st gear. Again it seems like there are many opinions on how to shift a manual trans car and many different ways to break parts. I have avoided breaking anything and would like to keep it that way so I will proceed with caution on my next outing at the track.
I think powershifting would pick you up 2 or 3 tenths -
It'll be hard on parts.
Wow, that charger of yours sure runs the number! 
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