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

[pat schulte]

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.
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