[Diy_efi] Big Caddy

[Jason M.]

Over drive is hydraulic.  Only thing electrical in a 700r4 would be the 
torque converter lock up solonoid, couple gear indicator switches (most have 
one for park/neutral and one for overdrive) and in '91 it should also have 
an electronis speedometer drive, should be able to swap that for a cable 
drive if you need to.

Getting the Throttle valve cable set up right was probably the hardest part 
of the whole swap.

I forget the exact number now but there is something like 15 different 
cables.  They all need essentially the same travel, just have different 
distances from the throttle shaft, or overall length from what I read.

I used the holley cable bracket which mounts to the driverside rear 
carburetor hold down.  Also had to weld a piece of metal to it so it would 
also attach to the passenger side rear so it wouldn't rotate.  The TV cable 
used is for a '84 trans am (what the transmission came from).  Really needed 
about 6 more teeth on the adjuster to work with that bracket.  Currently the 
cable adjuster is a piece of hose that was split, put over the cable 
housing, then attached with a hose clamp.  Not ideal but it's worked for 
8000 miles so far.

Believe lokar makes a fancy TB cable that is a "cut to length" deal so you'd 
be able to get things lined up correctly.

The other problem I had was the carburetor I used, and old 450 cfm holley 
that was a replacement for a ford with a ball socket throttle cable and a 
kick down rod.  Just made it interesting hooking up the cables.

btw, I only used the carburetor because I already had it, they are cheap to 
rebuild and the quadrajet had a well worn primary throttle shaft.

Jason.
----- Original Message ----- 
From: "Mike V" <efi at dyakron.com>
To: <diy_efi at diy-efi.org>
Sent: Thursday, January 05, 2006 7:47 AM
Subject: Re: [Diy_efi] Big Caddy


> Hi Jason,
> I'm looking at putting a '91 700r4 in an old truck with a non-GM EFI
> computer and was wondering; did you have any other
> trans issues to deal with in that swap other than TC lock-up?
> I mean the OD shift requires no computer, correct?
> Thanks
> MV
>
> At 08:27 PM 1/4/2006 -0500, you wrote:
>
>>Only thing I really see missing in the basic mega squirt is idle air 
>>control (can use a two position motor, for fast idle then normal idle) and 
>>torque converter lock up.  Swapped a 700r4 into my 82 "el caprice" used 
>>simple switches for the torque converter lock up.  Works well, not as 
>>smooth as ecu control though.
>
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