Electronic Transmission Control

[Gwyn Reedy]

The 4L80 is the overdrive successor to the THM-400 and the 4L60 is the
successor to the 700R4 which was the overdrive successor to the THM-350.
There were 4L60 that were not computer controlled and the 4L60E which is.
Dunno if there was ever a 4L80 without the E.

I've got a big block pickup with a THM-400 and that transmission just won't
give up. Often pull loads of 25000 pounds with it. Have had some rear end
trouble, though <g> So I want the 4L80 for the THM-400 toughness plus the
overdrive so I can run a lower gear.

Gwyn

> -----Original Message-----
> From: owner-diy_efi at diy-efi.org [mailto:owner-diy_efi at diy-efi.org]On
> Behalf Of Swayze
> Sent: Wednesday, March 08, 2000 1:21 PM
> To: diy_efi at diy-efi.org
> Subject: Re: Electronic Transmission Control
>
>
> I had assumed the E after 4L80 was for electronic(computer) control. which
> suffix denotes just a TCC.
> (I am assuming the 4L80 is truck version(duty) of 200R4.)
> byE
> Mike
> Swayze
> mswayze at truswood.com
> kswayze at bellsouth.net
>
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