Re: Reverse manual valve body pros and cons
[Re: Twostick]
#3010822
01/31/22 01:04 PM
01/31/22 01:04 PM
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Joined: Jul 2003
Posts: 4,793 Holland MI Ottawa
2boltmain
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Full manual VB is FUN. Eliminates kickdown linkage which can be a plus for some. Example: Running a carb intake/ intake height that deviates so far from stock its a pain to make the kickdown work.
Keep old mopars alive.
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Re: Reverse manual valve body pros and cons
[Re: AARCONV]
#3010868
01/31/22 04:12 PM
01/31/22 04:12 PM
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Joined: Jan 2004
Posts: 8,349 fredericksburg,va
cudaman1969
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If you keep the kick down linkage the VB can be changed to use it for softer shifts but you still have to shift each gear. The forward pattern type can still use stock shifter
Last edited by cudaman1969; 01/31/22 04:13 PM.
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Re: Reverse manual valve body pros and cons
[Re: FurryStump]
#3011059
02/01/22 10:24 AM
02/01/22 10:24 AM
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Joined: Dec 2013
Posts: 4,704 Wichita
GY3
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Some have poo-poo'd it, but I really like the Turbo Action fwd pattern mvb. It shifts pretty firm but works really well in a street car that's more oriented for performance.
That said, I've built quite a few with the Trans-Go TF-2 kit and it works well for milder setups and retains the "kickdown" linkage. Very pleasant for around town driving and yet hits pretty hard when you stab the loud pedal.
'63 Dodge 330 11.19 @ 121 mph Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs. 10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.
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Re: Reverse manual valve body pros and cons
[Re: Twostick]
#3011060
02/01/22 10:36 AM
02/01/22 10:36 AM
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Joined: Dec 2013
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I don't know if it is a con per se but the trans operates at full line pressure all the time. Some extra wear and tear on the pump and drive plus it generates more heat so a good cooler would be advised.
Kevin I've driven over 7,000 miles with a manual valvebody using a Hayden cooler in front of the radiator. Never any issues with pump wear or fluids. We put a lot of power (between 600 and 850 depending on spray level) and no problems. I keep a close eye on it and pull it apart every couple of years as preventative maintenance.
'63 Dodge 330 11.19 @ 121 mph Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs. 10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.
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Re: Reverse manual valve body pros and cons
[Re: Locomotion]
#3011205
02/01/22 04:49 PM
02/01/22 04:49 PM
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Joined: Jan 2003
Posts: 20,212 Park Forest, IL
slantzilla
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Ddepending on how the vb is set up, a lot of times the "barking" the tires on the shift is actually overlap where the trans is in 2 gears at once for a short time. That's where the damage comes from.
"Everybody funny, now you funny too."
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Re: Reverse manual valve body pros and cons
[Re: slantzilla]
#3011316
02/01/22 09:05 PM
02/01/22 09:05 PM
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Joined: Mar 2011
Posts: 3,101 Michigan
A727Tflite
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Ddepending on how the vb is set up, a lot of times the "barking" the tires on the shift is actually overlap where the trans is in 2 gears at once for a short time. That's where the damage comes from. The only time you could have overlap is on the 2-3 shift unless you have a VB that has rear band on. Even then things would have to be pretty screwed up to get overlap.
Last edited by Transman; 02/01/22 09:06 PM.
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Re: Reverse manual valve body pros and cons
[Re: calrobb2000]
#3013811
02/09/22 05:52 PM
02/09/22 05:52 PM
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hi if you run a manual valve body you should have a trans shield for your own safety and others spectaters or passengers !
Not necessarily if you have a valvebody that incorporates low band apply.
'63 Dodge 330 11.19 @ 121 mph Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs. 10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.
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Re: Reverse manual valve body pros and cons
[Re: calrobb2000]
#3013837
02/09/22 07:12 PM
02/09/22 07:12 PM
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Joined: Aug 2003
Posts: 43,303 Bend,OR USA
Cab_Burge
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hi if you run a manual valve body you should have a trans shield for your own safety and others spectaters or passengers !
What The Frick are you talking about? I've used reverse manual shift valve bodies on the street and strip going back to the late 1960s with no issues ever 727 started exploding when trans brakes were invented and installed
Last edited by Cab_Burge; 02/09/22 07:13 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Reverse manual valve body pros and cons
[Re: Cab_Burge]
#3013996
02/10/22 11:53 AM
02/10/22 11:53 AM
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Joined: Oct 2004
Posts: 2,843 Connecticut
FurryStump
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RMVB has nothing to do with sprag/over running clutch failure except if the valve body doesn’t have low band apply. Really any valve body can have or not have low band apply. If you run a stock drum 727 you should have some style of containment regardless of any other part in the transmission. Low band apply make it a bit safer? Yes. I crushed a sprag in my 727 with low band apply. Due to the tire I run, I pedal the car a BUNCH in first gear. I believe the low band apply and to a lesser extent that the rollers were crushed and had locked the low reverse drum in place stopped it from going BOOM. It still cracked the case. Had to use long bolts in the tailshaft holes to push the low reverse drum out of the sprag! If it had shifted into sec……..ouch. No drum explosion, but it could have locked the tire or broken the low reverse drum free. I felt something in staging and while rolling into the burnout box and didn’t make the run.
Last edited by FurryStump; 02/10/22 12:02 PM.
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Re: Reverse manual valve body pros and cons
[Re: chargers777]
#3014084
02/10/22 04:49 PM
02/10/22 04:49 PM
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Joined: Jan 2003
Posts: 31,076 Oregon
AndyF
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Looking at getting a car with one.How street able are they? I assume you have to upshift and downshift Everytime you stop.How practical are they for a fun cruiser? It really depends on how you're going to drive the car and if anyone else is going to drive the car. I had a manual valve body in my Duster and it was kind of fun to shift gears all the time but that was a hot rod. In a daily driver I'd prefer to just put it in D and not worry about it. The more "hot rod" the car is then the more likely you'll like a manual valve body. If it is a cruiser that your wife drives then maybe stick with a full automatic.
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