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#704432 - 07/17/09 07:28 AM Eliminate T/V cable problems on 200r4 and 700r4..
SS402 Offline
Member

Registered: 02/06/08
Posts: 4656
Loc: Beaverton, Oregon
With a constant pressure valve body
All 200r4 http://www.summitracing.com/parts/TCI-386020/
1982-86 700r4 http://www.summitracing.com/parts/TCI-376021/
1987-92 700r4 http://www.summitracing.com/parts/TCI-376020/

Say goodbye to low line pressure due to improper cable adjustment!
These revolutionary constant pressure valve bodies from TCI solve the low line pressure (above 200 psi) problems associated with improper shift T.V. cable adjustment. Automatic transmissions are complex components--mysterious boxes filled with fluid and strange-looking parts that challenge even an accomplished engine builder. Many racers and street performance enthusiasts incorrectly install their transmissions, with the critical T.V. cable used to set internal line pressure, and the part throttle shifting either left disconnected or improperly adjusted. The result is a total transmission meltdown, often within a matter of a few miles. These TCI constant pressure valve bodies solve that problem. In the past, the T.V. cable adjustment on transmissions required near-expert mechanical abilities. Installing the TCI constant pressure valve bodies helps you to avoid common transmission destruction by maintaining at least 200 psi of line pressure at all times. While the T.V. cable still needs to be connected for proper transmission operation, the TCI constant pressure valves provide more freedom when setting part-throttle shift points. Line pressure is fixed with no chance of encountering a low line pressure condition. These valve bodies are designed for street and mild race applications, plus they include detailed instructions for proper installation.
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George
Monte, Gone but not forgotten

The More I Learn About Dogs
The Less I Like About People

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#704434 - 07/17/09 07:37 AM Re: Eliminate T/V cable problems on 200r4 and 700r4.. [Re: SS402]
go3and8 Offline
Member

Registered: 09/21/04
Posts: 1464
Loc: Littleton, MA
Interesting.
_________________________
1987 Monte SS t-top - building slowly, but it will go fast when it's done....Frame is done
1987 Monte SS hardtop - Rust/rot got the better of it
A cellar full of parts
2013 GMC Sierra 2500HD SLT
2011 GMC Acadia SLT1 (family rig)
2008 Silverado 2500 HD (work truck)

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#704496 - 07/17/09 01:28 PM Re: Eliminate T/V cable problems on 200r4 and 700r4.. [Re: go3and8]
doug86monte_ss Offline
Member

Registered: 04/02/08
Posts: 199
Loc: Rochester, N.Y.
so, do you still need to have the t.v cable adjusted somewhat? i think thats pretty reasonable price.
_________________________
86 monte ss, T.E.S. headers, rebuilt 2004r, L69 with Edelbrock intake, Holley SA.

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#704526 - 07/17/09 03:44 PM Re: Eliminate T/V cable problems on 200r4 and 700r4.. [Re: SS402]
84 ZZ4 Offline
Member

Registered: 08/16/07
Posts: 4843
Loc: San Antonio, TX
Originally Posted By: SS402
...... While the T.V. cable still needs to be connected for proper transmission operation, the TCI constant pressure valves provide more freedom when setting part-throttle shift points......

I had to read it twice too.... me --> ancient

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#704528 - 07/17/09 03:49 PM Re: Eliminate T/V cable problems on 200r4 and 700r4.. [Re: 84 ZZ4]
JAWSS Offline
Member

Registered: 10/25/06
Posts: 1791
Loc: Ft. Hood, TX
They have a Buick Grand National calibration in production as well. I like this idea. Even with the TV made easy brackets there is still room for error. I like knowing I wont fry my expensive transmission very easily.
_________________________

86 Monte Carlo SS T-top(His)
84 Monte Carlo SS TPI (Hers)
70 Chevelle Malibu (Second owner, grandma car)
12 Cadillac CTS-V Wagon

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#704554 - 07/17/09 06:23 PM Re: Eliminate T/V cable problems on 200r4 and 700r4.. [Re: JAWSS]
84supersport Offline
Member

Registered: 04/19/05
Posts: 4694
Loc: Louisville, KY
So what does the constant pressure do? Does it help prolong life or make the engine shift harder? There has to be a reason or they wouldve came like this from the factory you'd think. I think when I do mine i'm also going to buy the parts to eliminate the lockup converter.
_________________________
84 Monte SS stolen September 2012. 077 DFE Jefferson County KY plate. $2500 reward. Vortec headed 350ci, th350, 3:73 limited slip cast aluminum cover, Autometer gauges, Pro-Stick, 2.5" fiberglass hood.



Matt

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#704563 - 07/17/09 07:31 PM Re: Eliminate T/V cable problems on 200r4 and 700r4.. [Re: 84supersport]
JAWSS Offline
Member

Registered: 10/25/06
Posts: 1791
Loc: Ft. Hood, TX
It eliminates the chance of low line pressure, which is the number 1 killer of overdrive transmissions with a TV cable that is incorrectly adjusted. The GN version will most likely keep the characteristics of the stock valve body but will keep a constant line pressure. The TV cable will only be used to tailor your shift points. I like this alot. GM wouldnt put something like this in a car from the factory because the technology wasnt available or well understood back in the 80's. And its job security...
_________________________

86 Monte Carlo SS T-top(His)
84 Monte Carlo SS TPI (Hers)
70 Chevelle Malibu (Second owner, grandma car)
12 Cadillac CTS-V Wagon

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#704610 - 07/17/09 10:10 PM Re: Eliminate T/V cable problems on 200r4 and 700r4.. [Re: JAWSS]
SS402 Offline
Member

Registered: 02/06/08
Posts: 4656
Loc: Beaverton, Oregon
Originally Posted By: JAWSS
It eliminates the chance of low line pressure, which is the number 1 killer of overdrive transmissions with a TV cable that is incorrectly adjusted
yup
_________________________
George
Monte, Gone but not forgotten

The More I Learn About Dogs
The Less I Like About People

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#704752 - 07/18/09 11:29 AM Re: Eliminate T/V cable problems on 200r4 and 700r4.. [Re: SS402]
84supersport Offline
Member

Registered: 04/19/05
Posts: 4694
Loc: Louisville, KY
Yeah, I got that it prevents low line pressure, duh. But are there any other advantages? I guess I could see, maybe, no one knowing how to have constant pressure back in the 80s. I figured, the way GM is, the lower pressure at part throttle aides in more comfortable shifts.
_________________________
84 Monte SS stolen September 2012. 077 DFE Jefferson County KY plate. $2500 reward. Vortec headed 350ci, th350, 3:73 limited slip cast aluminum cover, Autometer gauges, Pro-Stick, 2.5" fiberglass hood.



Matt

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#704762 - 07/18/09 12:20 PM Re: Eliminate T/V cable problems on 200r4 and 700r4.. [Re: 84supersport]
Crusher Offline
10+ Year
Member

Registered: 07/12/00
Posts: 1484
Loc: Jersey Shore
Since this is a new valve body and plates, I wonder how hard they shift and can they be modified for firmer shifts.
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2004 Commemorative Edition Corvette Vert. SuperCharged
1988 502/502 SuperCharged
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#704901 - 07/18/09 09:30 PM Re: Eliminate T/V cable problems on 200r4 and 700r4.. [Re: Crusher]
Retro Offline
Member

Registered: 01/02/08
Posts: 1991
Loc: Macon,Ga.
These are not new, they've been out for a few years now. There is a little down side to the CP V-Body. Early pump wear from Constant High pressure since the pump will no longer have variable pressuure output and very firm to harsh part throttle shifts all the time. You win some you loose some. For a Strip only car there great.


Edited by Retro (07/18/09 09:32 PM)

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#704964 - 07/19/09 05:09 AM Re: Eliminate T/V cable problems on 200r4 and 700r4.. [Re: Retro]
02intimidator Offline
Member

Registered: 05/05/09
Posts: 670
Loc: Matawant, NJ
I have one in my 200-4r. It Definitely does help but you still need a preasure gauge, mine blew the first gear seal and now it slips and leaks like a bastard due to the high preasure. Dave @ Turbo Buick Performance is building me another tranny.
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Just your typical N/A 10sec Street Car.

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#705005 - 07/19/09 01:04 PM Re: Eliminate T/V cable problems on 200r4 and 700r4.. [Re: Crusher]
SS402 Offline
Member

Registered: 02/06/08
Posts: 4656
Loc: Beaverton, Oregon
Originally Posted By: Crusher
Since this is a new valve body and plates, I wonder how hard they shift and can they be modified for firmer shifts.
any time you increase line pressure you increase firmness of shifts
_________________________
George
Monte, Gone but not forgotten

The More I Learn About Dogs
The Less I Like About People

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#705084 - 07/19/09 08:59 PM Re: Eliminate T/V cable problems on 200r4 and 700r4.. [Re: SS402]
Crusher Offline
10+ Year
Member

Registered: 07/12/00
Posts: 1484
Loc: Jersey Shore
So your saying that this set up increases the line pressure? I thought it's puppose was to keep the line pressure steady.
_________________________
2004 Commemorative Edition Corvette Vert. SuperCharged
1988 502/502 SuperCharged
http://SSMonteCarlo.com

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#705235 - 07/20/09 10:12 AM Re: Eliminate T/V cable problems on 200r4 and 700r4.. [Re: Crusher]
SS402 Offline
Member

Registered: 02/06/08
Posts: 4656
Loc: Beaverton, Oregon
Originally Posted By: Crusher
So your saying that this set up increases the line pressure? I thought it's puppose was to keep the line pressure steady.
that was a misleading reply i gave before, its purpose is to keep line pressure steady.
Shift firmness can be adjusted by lowering or raising line pressure..
_________________________
George
Monte, Gone but not forgotten

The More I Learn About Dogs
The Less I Like About People

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