Converting a Mopar 440 to GM TBI

[rr]

The 220 comes in three sizes: 1 3/8", 1 11/16", & 2" bores. There are various
injectors used throughout.

The gmecm site has more details.

BobR.

Brian Roth wrote:

> I'll try. Here goes.
>
> Bob,
>
>         I saw the page you posted on the conversion you did. You may be
> almost as cheap as me. I really admire your work!
>         I have a 1983 Mitsubishi pickup in which I have installed a 1988 Mustang 5.0
> EFI HO motor. It works pretty well.
>         The purpose of this inquiry, though, is another project I am contemplating.
> I want to add GM TBI to my 1978 Mopar 440 which powers my 23 foot motorhome.
> I want to scavenge parts from our local self service junk yards.
>         I have some questions that I thought you might answer:
>
> Did GM make more than one throttle body with two injectors. I noticed you
> used a throttle body that you did not know the origin of on your 403. I
> assume the CFM flow rate is OK even though I understand you are not using
> this as  a fuel source but mainly for air metering. My brief research seems
> to indicate that there was only one two barrel throttle body made, the model
> 220, which was used on everything from V6's to 454s. I want something close
> to what was used on the 454s but fuel injected 454s are impossible to come
> by at the price I am willing to pay. Could I get the throttle body from,
> say, a Cadillac 4.1, add injectors designed for a 454, use the harness,
> computer and sensors (modified for V8 use) from a 4.3 V6 or 2.8 V6 and be
> ready to rock and roll? It seems that I may not want to use all of the Caddy
> 4.1 setup because it is Digital Fuel Injection.
>
> Let me know what you think if you have the time.
>
> Brian Roth
> broth at sanjuan.edu
>
> Thanks for taking the time.
>

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