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

[Healy Powertrain]

These 4L60(E) unit are perfect for checking your memory functions, so many changes..pffff..I got a headache already reading all these posts...
There is a Update handbook from ATSG that covers all those changes.

I think you got a 1986 model trans:

It should have:
Small hole drum with checkball in drum (front)Smaller Diameter Steel piston without orifice
Regular "Flat" wave plate.


I think TG recommends another wave plate in between 2 frictions for smoother apply.

Marcel Verwijmeren
Healy Powertrain
Driveline Solutions
T 06 57745407
E <info at healypowertrain.com>
W <http://www.healypowertrain.com/>


On Thursday, November 6, 2025 at 3:59:15 pm +01:00, James Carter via trnw2 <trnw2 at trnw.net> wrote:

> 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?
> > > > This message was sent from the TRNW Technical Discussion Forum (trnw2). You were sent this message because you have subscribed to our mailing list. If you don't want to receive these emails from TRNW in the future, please unsubscribe here:
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> > > > TRNW Inc., 2825 Walnut Terrace, Modesto, CA 95355
> > > > This message was sent from the TRNW Technical Discussion Forum (trnw2). You were sent this message because you have subscribed to our mailing list. If you don't want to receive these emails from TRNW in the future, please unsubscribe here:
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> > > TRNW Inc., 2825 Walnut Terrace, Modesto, CA 95355
> > > 
> > 
> > -- 
> > 
> > Pat Schulte
> > AAMCO Transmissions
> > Temecula, Ca.
> > This message was sent from the TRNW Technical Discussion Forum (trnw2). You were sent this message because you have subscribed to our mailing list. If you don't want to receive these emails from TRNW in the future, please unsubscribe here:
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> > 
> > TRNW Inc., 2825 Walnut Terrace, Modesto, CA 95355
> > 
> This message was sent from the TRNW Technical Discussion Forum (trnw2). You were sent this message because you have subscribed to our mailing list. If you don't want to receive these emails from TRNW in the future, please unsubscribe here:
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