Driving a Mopar with a manual Valve Body..
#1537955
11/21/13 09:27 PM
11/21/13 09:27 PM
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Joined: Aug 2003
Posts: 12,589 Sacramento, CA
cal_gecko
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OP
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Sacramento, CA
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So my car is done.. I'm going to pick it up in about an hour .. it's a 71 Dart Swinger with a mildly built 360, 8.75" rear end and trans (904) is built with a Griner reverse Valve Body, low first gear set, upgraded clutches, 2800 rpm stall converter..
So this will be my first time driving it in 10 years of owning it.. I've never driven a car with a manual valve body.. may seem like a dumb question, but I'm assuming it should be pretty straightforward, shift it when the rpm's climb, and as I'm slowing down, downshift... right ?
Nothing fancy - I'm assuming....
is it ok to start in 2nd gear if I wanted to?
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Re: Driving a Mopar with a manual Valve Body..
[Re: cal_gecko]
#1537956
11/21/13 09:45 PM
11/21/13 09:45 PM
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Joined: Jan 2012
Posts: 1,650 Harm City Md.
Dan Halen
top fuel
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top fuel
Joined: Jan 2012
Posts: 1,650
Harm City Md.
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Up shift as needed, no need to wind it up. I down shift to first as I come to a stop to avoid unnecessary wear. The only thing that can be dicey is downshifting when you're getting on it from a 50+ mph roll. You went all out on a Griner for a street car??
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Re: Driving a Mopar with a manual Valve Body..
[Re: cal_gecko]
#1537957
11/21/13 10:02 PM
11/21/13 10:02 PM
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Joined: Nov 2006
Posts: 1,454 oklahoma
forphorty
pro stock
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pro stock
Joined: Nov 2006
Posts: 1,454
oklahoma
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The Griner is a low band apply(LBA) valve body. My only experience is with the TA non low band apply vb. I never downshift when i slow down. I've heard that a LBA vb will jerk when shifted into first while moving. Again, no experience with the LBA type. Obviously if you slow down and then need to accelerate from a low speed, you may want to downshift. I will sometimes take off in second when driving in ice and snow. Otherwise it's not a good idea, due to converter slippage and heat.
Last edited by forphorty; 11/21/13 10:04 PM.
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Re: Driving a Mopar with a manual Valve Body..
[Re: Dan Halen]
#1537959
11/21/13 11:06 PM
11/21/13 11:06 PM
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Joined: Jan 2003
Posts: 4,247 Newfoundland
codfish
master
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master
Joined: Jan 2003
Posts: 4,247
Newfoundland
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Quote:
Up shift as needed, no need to wind it up. I down shift to first as I
come to a stop to avoid unnecessary wear.
This is how I drive the Dart with my CRT low band applied 727.
Update us once you're home
codfish
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Re: Driving a Mopar with a manual Valve Body..
[Re: Blown 68 R/T]
#1537961
11/21/13 11:37 PM
11/21/13 11:37 PM
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Joined: Jul 2008
Posts: 30,253 Florida STAYcation
dIc dOc Deity !
The village idiot's idiot
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The village idiot's idiot
Joined: Jul 2008
Posts: 30,253
Florida STAYcation
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I must have a stump-puller motor in mine compared to you other .... on a EZ grandma leave at a stop lite ... the BUTTON on my dash shifter is in D .... with a 2.76 gear . ...and none of youz say PICS or it never happened ..
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Re: Driving a Mopar with a manual Valve Body..
[Re: bboogieart]
#1537966
11/22/13 12:26 AM
11/22/13 12:26 AM
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Joined: Jul 2008
Posts: 30,253 Florida STAYcation
dIc dOc Deity !
The village idiot's idiot
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The village idiot's idiot
Joined: Jul 2008
Posts: 30,253
Florida STAYcation
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Quote:
Quote:
....leaving in THIRD is fine ... just don't get into the secondaries of the carb ...
Sometimes I think you aint all there.
I am there - ALL there ...on my push-button-shifter .. and ferr-surr NOT spaced-out and lost
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Re: Driving a Mopar with a manual Valve Body..
[Re: RJS]
#1537970
11/22/13 03:10 AM
11/22/13 03:10 AM
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Joined: Aug 2003
Posts: 12,589 Sacramento, CA
cal_gecko
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Quote:
If your VB has a free wheeling first gear do not go back onto the gas while it's free wheeling. I've had Manual Valve bodies on the street before and downshifting isn't he best for it.
I have NO idea if it has that or not ...
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Re: Driving a Mopar with a manual Valve Body..
[Re: cal_gecko]
#1537973
11/22/13 05:13 AM
11/22/13 05:13 AM
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Joined: Aug 2003
Posts: 12,291 Kent, Wa
340SHORTY
Truck Nut
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Truck Nut
Joined: Aug 2003
Posts: 12,291
Kent, Wa
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In the (brand unknown) MVB I could do the normal 1, 2, 3, and 3, 2, shifts with no problem. I didnt shift to 1st till I was stopped.
I am truckless..
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Re: Driving a Mopar with a manual Valve Body..
[Re: 340SHORTY]
#1537974
11/22/13 05:16 AM
11/22/13 05:16 AM
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Joined: Aug 2003
Posts: 12,589 Sacramento, CA
cal_gecko
OP
I Live Here
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I Live Here
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Posts: 12,589
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Quote:
drive it like a granny gear stick without a clutch.. Hope you have a good shifter..
Never driven a granny gear stick...
I'm using a B&M Quicksilver shifter
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Re: Driving a Mopar with a manual Valve Body..
[Re: cal_gecko]
#1537975
11/22/13 06:25 AM
11/22/13 06:25 AM
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Joined: Jan 2003
Posts: 20,149 Park Forest, IL
slantzilla
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 20,149
Park Forest, IL
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A Griner should be a low band apply unless it's an older one. Realistically, you can start out in 2nd or even 3rd if you want, it really won't hurt anything. You can tell instantly if it's an LBA or not. Back off of it in 1st. If it has engine braking it's an LBA, if not, it isn't. Do not downshift into first while you're coasting with an LBA. Try it once and you'll find out why. As said before do not downshift to low and get on the gas if it's a non LBA. You can roll the sprag and things will go downhill from there. 904 isn't nearly as bad as a 727 about rolling the sprag, but it can still happen. 904 usually won't explode either. Yes, you can downshift 3rd to 2nd and gas it for passing, etc., LBA or not. I've driven many thousands of miles on the street with a manual valve body. No big deal once you get used to it. Almost as much fun as a clutch car.
"Everybody funny, now you funny too."
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Re: Driving a Mopar with a manual Valve Body..
[Re: slantzilla]
#1537976
11/22/13 06:45 AM
11/22/13 06:45 AM
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Joined: Jan 2007
Posts: 10,115 A Red State
SNK-EYZ
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I Live Here
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Posts: 10,115
A Red State
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Here's a reverse manual 727 non LBA question.
I've launched at the track before with my hand on the shifter and right at/after launch it goes into second. (the shift-r-gate doesn't work every time as I expected).
I pushed it back into first (still under full throttle).
Is that a problem?
Is a full throttle downshift into first a no-no with a non lba valve body?
Kayse can't keep up at all now. lol
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Re: Driving a Mopar with a manual Valve Body..
[Re: 383man]
#1537981
11/22/13 12:44 PM
11/22/13 12:44 PM
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Joined: Aug 2003
Posts: 12,589 Sacramento, CA
cal_gecko
OP
I Live Here
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OP
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Thanks for all the info, guys!! Yes, it's a reverse pattern, and I remember John Cope talking me into the LBA aspect of it.. I think I also got upgraded clutches, kevlar bands and koleans steels, in addition to the low 1st gear set from him ... I had no idea what any of it meant, but it sounded like it was 'necessary' to build a solid trans for the car. I also put in a 2800rpm stall converter .. so the trans is more high performance than my engine, at this point! Thanks for the explanations to my rookie questions without making me feel like an imbecile - it was a little embarrassing asking questions about how to drive an automatic transmission!!! So - Never downshift to 1st unless I'm at a dead stop is rule #1 !! If doing a burnout, start in 2nd gear is rule #2 Drive it like I stole it is rule # 3
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