is it gonna fit?

[Shannen Durphey]

The 60 and 80 are relative ratings.  The scale can be different between front and
rear wheel drive trannys.  But the 4T60E is rated for some suprisingly high input
torque.

Shannen

Programmer wrote:
> 
> So this means the 4T60 is rated for 600 ft/lbs ?? It was a metric nominal
> torque
> rating from what I remember...not foot/lbs torque.
> 
> Lyndon.
> 
> ----- Original Message -----
> From: Gonyou, Jeremy (.) <jgonyou at ford.com>
> To: <gmecm at diy-efi.org>
> Sent: Friday, May 18, 2001 7:09 AM
> Subject: RE: is it gonna fit?
> 
> > I believe the difference in capacity is 200 ft-lbs.  Meaning the 4L80 is
> rated at 800 ft-lbs and the 4L60 is rated 600 ft-lbs.  However this accounts
> for torque multiplication from the torque converter, so it is actually
> *half* that.
> >
> > Jeremy
> >
> > -----Original Message-----
> > From: don.broadus at exeloncorp.com [mailto:don.broadus at exeloncorp.com]
> > Sent: Thursday, May 17, 2001 12:25 PM
> > To: gmecm at diy-efi.org
> > Subject: RE: is it gonna fit?
> >
> >
> > Does the 4L80E have that much more torque handling
> > capacity compared to the 4L60E ?   thanks
> >                                                        Don
> >
> >
> > > -----Original Message-----
> > > From: Shannen Durphey [SMTP:shannen at grolen.com]
> > > Sent: Thursday, May 17, 2001 10:39 AM
> > > To: gmecm at diy-efi.org
> > > Subject: Re: is it gonna fit?
> > >
> > > 4L60=700R4
> > > Gm game. New name, same ol same ol.
> > > Shannen
> > >
> > > Squash wrote:
> > > >
> > > > I don't think they started using the 4L60 until 1991.  If it's an 88
> it
> > > prolly has a 700R4 or
> > > > TH400.
> > > >
> > > > Squash
> > > >
> > > > --- Jake Kooser <jake_k at attglobal.net> wrote:
> > > > > bummer.
> > > > >
> > > > > Jake Kooser
> > > > >
> > > > > > -----Original Message-----
> > > > > > From: owner-gmecm at diy-efi.org [mailto:owner-gmecm at diy-efi.org]On
> > > Behalf
> > > > > > Of Shannen Durphey
> > > > > > Sent: Thursday, May 17, 2001 12:44 AM
> > > > > > To: gmecm at diy-efi.org
> > > > > > Subject: Re: is it gonna fit?
> > > > > >
> > > > > >
> > > > > > The 88 truck would have a THM400 or 4L60.  You would need to
> > > > > > score a newer model
> > > > > > truck for the 4L80E.
> > > > > >
> > > > > > 4L60 transmissions after 86 are generally stronger, but
> > > > > > definitely try to get some
> > > > > > idea as to the condition of the fluid and miles on the trans
> > > > > > before buying.  Truck
> > > > > > transmissions tend to get worked harder.  But you know that.  The
> > > > > > ecm would be our
> > > > > > friend and brother, the 7747.  But the 7747 really likes to be a
> > > > > > tbi ecm.  TPI is
> > > > > > better run with a tpi ecm, and since you're not worried about
> > > > > > controlling a 4L80E,
> > > > > > you can use the 727/730 sd tpi ecm.
> > > > > >
> > > > > > Fwiw, ymmv, hth.
> > > > > >
> > > > > > cya.
> > > > > >
> > > > > > I mean, see ya.
> > > > > > Shannen
> > > > > >
> > > > > > Jake Kooser wrote:
> > > > > > >
> > > > > > > Somebody here in South Florida was kind enough to roll their 88
> > > > > > 3/4 ton 4X4
> > > > > > > PU and now is parting it out.  I've got an '85 suburban 3/4 ton
> > > > > > 4X4 and I
> > > > > > > want to swap my TH400 trans for a 4L80E if I can.  Does anybody
> > > > > > here know if
> > > > > > > that truck would have that trans, or would it be the 700R4
> > > > > > still?  If it's
> > > > > > > the 700R4, isn't this after the "fixes" to the early model
> > > > > > 700R4 problems?
> > > > > > > Should I get the transfer case too?  What else would I need to
> > > score to
> > > > > > > control the transmission (assuming 4L80), ECM guys?  And
> > > > > > finally, what ECM
> > > > > > > would be in this truck, and could it be taught to control a
> Tuned
> > > Port
> > > > > > > engine?
> > > > > > >
> > > > > > > Sorry for the geyser 'O' stupid questions, but just the
> > > > > > possibility is like
> > > > > > > winning the lottery here.  Big Sub like gasoline just a little
> > > > > > too much...
> > > > > > > Especially after coming from an air-cooled VW.
> > > > > > >
> > > > > > > Jake Kooser
> > > > > > >
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