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Tv cable necessary ? 700r4

I

ilikemud

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Got a mud truck. Mud only 383 stroker 700r4 truck runs no more than 2 minutes at a clip and never sees third or overdrive. I seem to remember that line pressures are or something allows slippage? Anyhow my question is will it hold gears fine and will it do any damage to the Trans not running the tv cable?
 
you need a manual valve body to run no tv.. full line pressure all the time..
 
Thank u for your help now when is full line pressure achieved? Like if I pull the cable like it is at full throttle and pinch it there is that full line pressure. Or at idle position holding full pressure? Or is it totally unattainable without replacing the valve body?
 
no clue on any "backyard" method to having full line pressure, whether it's in the VB or TV plunger.. I just now the MVB gives you that feature..... I plan to run the BTO RMVB for that reason...

Greg Ducato may chime in as a tranny guy with more info...
 
I wouldn't do it. Clamping the cable out WILL give you full line pressure, but with the regular valve body you still have automatic shift control. So all shifts will be at the WOT RPM for each gear all the time. So even if you are just unloading off the trailer, you have to hit 5200RPM or something to get into 2nd gear. In some cases, depending on which governor you have, etc., the 1-2 shift point can be so high it's virtually out of reach without lifting your foot off the throttle. So you might end up adding weights to the governor, just so you can get out of 1st gear. Overall, kind of wacky.

A full manual valve body would be a good match for a truck that only sees mud drags. Most go with the reverse manual valve body then, so from neutral you go sequentially through 1, 2, 3, 4. However, it is cheaper and easier to install a bracket and cable then to do the full manual conversion.
 
Blue85 said:
I wouldn't do it. Clamping the cable out WILL give you full line pressure, but with the regular valve body you still have automatic shift control. So all shifts will be at the WOT RPM for each gear all the time. So even if you are just unloading off the trailer, you have to hit 5200RPM or something to get into 2nd gear. In some cases, depending on which governor you have, etc., the 1-2 shift point can be so high it's virtually out of reach without lifting your foot off the throttle. So you might end up adding weights to the governor, just so you can get out of 1st gear. Overall, kind of wacky.

A full manual valve body would be a good match for a truck that only sees mud drags. Most go with the reverse manual valve body then, so from neutral you go sequentially through 1, 2, 3, 4. However, it is cheaper and easier to install a bracket and cable then to do the full manual conversion.
Click to expand...


my undersanding of the RMVB is that that you just need to manually shift from gear to gear.. not at some crazy, full throttle, screaming 6 grand kinda thing...
 
I wouldn't run a 700r4 in your situation (hear me out, I run a 700r in my wheeler and love it so I'm not one of those OD haters)...

For the money you'll spend on going to a full manual valve body and getting a shifter you could dang near get a nice little th350. You can buy built th350's for relatively cheap if you wanted to go that route as well.

I'm assuming it's because manual valve bodies aren't popular in 700r4 applications but whatever the reason they're really expensive. I figured a while back I'd end up spending about $500 to swap over which wasn't worth it IMO.

Oh and as it's been mentioned but with no TV cable it won't shift worth a crap or hold any kind of power. New TV cables are really cheap and you can even pay a tranny shop less than an hours labor to hook it up and adjust it.
 
Thank you for the information the issue I have is engine swap and no e of the brackets work and I am into this truck for a fortune already and don't want to buy more parts. But it looks like I'm buying more parts. Also I'm running a 700r4 cause I have 3 good ones and the one that's in the truck so its medley a run what u have as far as the Trans is concerned.
 
If you use the stock C weight governor or the diesel D weight governor you could block the tv cable at the full extension, or close to and manual shift above 5000 rpm. The diesel governor will allow upshifts at a lower rpm than that. I don't see any harm in doing it this way if it is the only means you have to run a tv cable but there are other ways besides hooking to carb linkage to get it sorted out.
 
ryoken said:
my undersanding of the RMVB is that that you just need to manually shift from gear to gear.. not at some crazy, full throttle, screaming 6 grand kinda thing...
Click to expand...

Yes - hence the term "manual". I was talking about using the automatic valve body with a locked TV. You have to either set it light so you burn up the tranny during pulls or set it so hard that you can hardly get it to shift.


But it seems like a junkyard bracket reworked for whatever carb is on there and a cable will be less than $40 and it would work good enough for mud drags.
 
Blue85 said:
hence the term "manual"..
Click to expand...

:rolleyes:



Blue85 said:
A full manual valve body would be a good match for a truck that only sees mud drags.
Click to expand...

implies the MVB was only good for the same high RPM deal as the AVB would need to be run at.. nothing wrong with a MVB or RMVB in any RPM range... tho, not going RMVB, seems silly what with the pattern and drivability..
 
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