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

[Fred Whitaker]

 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<mailto: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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