is it gonna fit?

[Squash]

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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> 


=====
Trains, Trucks, and EFI at http://www.trailrunners4x4.org/users/realsquash

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