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Manual valve bodies... Do they improve ET?
#1690219
10/25/14 12:18 AM
10/25/14 12:18 AM
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Joined: Jul 2004
Posts: 4,732
Watertown, WI
MikeyT
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Hi,
I am just curious... Does switching to a manual valve body in a transmission yield better ET, or is it more about consistency?
If they do get you better track times? What kind of gains do you see?
Mikey
1969 Dodge Dart Swinger
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Re: Manual valve bodies... Do they improve ET?
[Re: MikeyT]
#1690220
10/25/14 12:54 AM
10/25/14 12:54 AM
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Joined: Jan 2003
Posts: 6,266
Renton Washington
Triple Threat
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Renton Washington
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No gains unless you've got something wrong with the stock valve body. Just helps up the line pressure and offers more control to the driver.
-Dustin
67 Dart, 9 second, 392" G3 Hemi
68 Barracuda 340 F/SA
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Re: Manual valve bodies... Do they improve ET?
[Re: Triple Threat]
#1690221
10/25/14 01:10 AM
10/25/14 01:10 AM
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Joined: Jan 2003
Posts: 11,711
Portage,michigan
B3422W5
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I Live Here
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Portage,michigan
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I don't understand how it couldn't help immensely.
You can shift firmer, less overlap, and quicker at the exact rpm the car likes( after trial and error).
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8
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Re: Manual valve bodies... Do they improve ET?
[Re: B3422W5]
#1690222
10/25/14 02:03 AM
10/25/14 02:03 AM
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Joined: Jul 2004
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Watertown, WI
MikeyT
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I would think consistency as well, we will see if it improves ET tomorrow!  Mikey
1969 Dodge Dart Swinger
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Re: Manual valve bodies... Do they improve ET?
[Re: Hutch]
#1690224
10/25/14 02:13 AM
10/25/14 02:13 AM
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Joined: Jul 2004
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Watertown, WI
MikeyT
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Cool, thanks guys
Mikey
I will post results
Currently heap does 13.81 at 96 mph
1969 Dodge Dart Swinger
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Re: Manual valve bodies... Do they improve ET?
[Re: MikeyT]
#1690225
10/25/14 04:13 AM
10/25/14 04:13 AM
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Puyallup, WA
StealthWedge67
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Paul Forte at Turbo Action told me I could expect as much as 2 tenths going from a stock valve-body to the T/A manual..... I saw nothing. I'd make this mod again in a heartbeat, though. I used to struggle with finding the right throttle pressure setting. No worries on upshifts now, the next gear is always right there.
LemonWedge - Street heavy / Strip ready - 11.07 @ 120
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Re: Manual valve bodies... Do they improve ET?
[Re: Hutch]
#1690226
10/25/14 10:30 AM
10/25/14 10:30 AM
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Joined: Feb 2005
Posts: 4,313
Prospect, PA
BSB67
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Quote:
If you had an auto valve body that worked well and you converted it to a manual shift (forward pattern) you would see no difference at all. If you convert to a reverse manual valve body that has no low band apply you may notice a slightly better ET if what you had before had some overlap.
Many variables will determine the outcome of this question.
Hutch
 Lets not forget that it takes hp to drive the pump at a higher pressure
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Re: Manual valve bodies... Do they improve ET?
[Re: BSB67]
#1690227
10/25/14 10:38 AM
10/25/14 10:38 AM
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Frostbitefalls MN (Rocky&Bullw...
gregsdart
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Firmer shifts and less overlap. That has to be worth something. In my case I was setting the 2nd gear band too tight, was worth half a tenth to get it right!
There can also be an overlap in manual low/2nd. That can be severe if a shift kit isn't done right.
Last edited by gregsdart; 10/25/14 10:41 AM.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: Manual valve bodies... Do they improve ET?
[Re: MikeyT]
#1690228
10/25/14 11:15 AM
10/25/14 11:15 AM
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Joined: Feb 2005
Posts: 4,313
Prospect, PA
BSB67
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Quote:
Cool, thanks guys
Mikey
I will post results
Currently heap does 13.81 at 96 mph
You will need to keep other variables as constant as possible to actually come to any clear conclusion. A couple of key variables are engine, water and oil temperature, 60 ft time, and atmospheric conditions. You will need the weather data from the past and the new track events so that you can adjust for these. Also, did you make ANY other changes to the car since your last outing?
Without holding these variables close, the manual VB might actually help, but the car slows .2, or it does not help at all, and the car picks up .3.
Be cautious on what you think you are learning.
Last edited by BSB67; 10/25/14 11:40 AM.
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Re: Manual valve bodies... Do they improve ET?
[Re: StealthWedge67]
#1690229
10/25/14 07:51 PM
10/25/14 07:51 PM
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Joined: Jan 2003
Posts: 32,394
Quicktree
I Win
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I Win
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Quote:
Paul Forte at Turbo Action told me I could expect as much as 2 tenths going from a stock valve-body to the T/A manual..... I saw nothing. I'd make this mod again in a heartbeat, though. I used to struggle with finding the right throttle pressure setting. No worries on upshifts now, the next gear is always right there.
I have seen many times a car pick up .2 but it depends on how bad off the other set was.
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Re: Manual valve bodies... Do they improve ET?
[Re: Quicktree]
#1690230
10/26/14 11:21 AM
10/26/14 11:21 AM
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Watertown, WI
MikeyT
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Dang! I actually lost a bit best run14.2 at 95 mph
Mikey
1969 Dodge Dart Swinger
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Re: Manual valve bodies... Do they improve ET?
[Re: Big Squeeze]
#1690232
10/26/14 04:05 PM
10/26/14 04:05 PM
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Joined: Feb 2005
Posts: 4,313
Prospect, PA
BSB67
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Quote:
Quote:
Dang! I actually lost a bit best run14.2 at 95 mph
Mikey
That's not because of the VB...you have something else going on... 
Hmmm, maybe back to what I said earlier.  
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Re: Manual valve bodies... Do they improve ET?
[Re: BSB67]
#1690233
10/26/14 07:19 PM
10/26/14 07:19 PM
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Joined: Aug 2003
Posts: 43,141
Bend,OR USA
Cab_Burge
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Bend,OR USA
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Last edited by Cab_Burge; 10/26/14 07:19 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Manual valve bodies... Do they improve ET?
[Re: Cab_Burge]
#1690234
10/26/14 11:22 PM
10/26/14 11:22 PM
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Joined: Jul 2004
Posts: 4,732
Watertown, WI
MikeyT
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Totally agree with you all, but am kind of stumped. The car is nice, starts up nice, drives nice, but I feel like it is kind of a dog.. 14.2, with a best of 13.81, at 96 mph and I feel like it should have a lot more in it, then it does..
Mikey
1969 Dodge Dart Swinger
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Re: Manual valve bodies... Do they improve ET?
[Re: MikeyT]
#1690236
10/27/14 04:13 AM
10/27/14 04:13 AM
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Joined: Aug 2003
Posts: 43,141
Bend,OR USA
Cab_Burge
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Bend,OR USA
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i've seen many, many aftermarket shifter cables mal or misadjusted, that flat eats up HP and transmissions, especially in our 727 and 904  I learned a long time ago to make sure the pin on the end of the cable end that rotates on the cable to adjust the length that fits into the shifter arm on the valve body drops in in nuetral, 1st, 2nd and 3rd gear. DROPS IN If it doesn't adjust the cable hieght and angle on the tranny bracket that hold the cable to the shifter arm until the cable end drops in by itself in all four positions  Some the different shifters companys don't designate which way they want the pin to be install, from the top of the shifter arm or from the bottom, if your doesn't sometimes 1/2 a turn on the cable end will make the difference in dropping and not dropping Good luck , lets us know how it works out
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Manual valve bodies... Do they improve ET?
[Re: Cab_Burge]
#1690237
10/27/14 10:28 AM
10/27/14 10:28 AM
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Joined: Jul 2004
Posts: 4,732
Watertown, WI
MikeyT
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Hutch, Believe it or not but my 60 foot time, my best was 2.2. Also, Cab I agree I am always worried about TF linkage, so I had my transmission guy help set it up correctly. My concern is HP in general A 9:1 440 with decent 915 heads, headers, 703 lunati cam, Holley dominator intake,and 750 carb , SHOULD be able to push a car into low 13's at Least.. 
1969 Dodge Dart Swinger
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