TRNW-2: 700r4 aux v body --non aux v body

[James Carter]

I believe that model should have at least one thick low /reverse steel
plate and a cushion steel . you can apply air with the valvebody off and
see how much travel you have .
Also a good point on the reverse drum Richard .
James

On Thu, Nov 6, 2025 at 6:42 AM pat schulte via trnw2 <trnw2 at trnw.net> wrote:

> I agree Fred, I know I have done it many times. I would question the
> timing of the L/R clutch as well, you would want that on before the reverse
> input clutches applied ideally.
>
> On Thu, Nov 6, 2025 at 3:43 AM Fred Whitaker via trnw2 <trnw2 at trnw.net>
> wrote:
>
>>  Iduno James  When these came out it was preached at seminars and tech
>> magazines not to use a big hole drum with a big hole stator. But I think I
>> have been getting away with it for years. As Bob Chernay used to say.
>> "Never say never and never say always"  Not saying a small feed hole
>> wouldn't fix it,and i don't know the answer. But I would do more digging
>> for answers before pulling it out. As far as I remember you are right 87
>> should have a aux valve body.  Did the case have the cup plug check ball
>> capsule at the back for Low reverse? Not saying that is problem but a way
>> to identify case.  Also 87 up case has a line in the casting on the outer
>> case that kind of makes a loop between cooler line fittings
>>
>> ------------------------------
>> *From:* trnw2-bounces at trnw.net <trnw2-bounces at trnw.net> on behalf of
>> James Carter via trnw2 <trnw2 at trnw.net>
>> *Sent:* Wednesday, November 5, 2025 4:13 PM
>> *To:* preston farmer <ipz2222 at comcast.net>; Technical Discussion Forum <
>> trnw2 at trnw.net>
>> *Subject:* Re: TRNW-2: 700r4 aux v body --non aux v body
>>
>> Preston
>> Probably a mismatch in the feed hole in the reverse drum to pump stator .
>> If you have a big hole drum and a big hole stator with a moderate boost
>> valve it will bump pretty good .
>> I have changed to non auxiliary vbs before without a problem .
>> James
>>
>> On Wed, Nov 5, 2025 at 4:03 PM preston farmer via trnw2 <trnw2 at trnw.net>
>> wrote:
>>
>> I have  a 87 truck with the date code on the side of the trans as 7,,
>> meaning 87. The trans has a non aux v body on it with non aux pump. Someone
>> built the trans 15 years ago.My understanding  was that all 87's had aux v
>> body. Vehicle had been sitting for years,, don't know if trans didn't last
>> long after being built. It has extremely hard rev engagement now with 75
>> psi pump pressure. Works good going fwd. Just wondering if the v body -
>> case might be a problem and does anyone have pictures of any possible
>> differences in the cases?
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>
>
> --
> Pat Schulte
> AAMCO Transmissions
> Temecula, Ca.
> This message was sent from the TRNW Technical Discussion Forum (trnw2).
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