[Gmecm] '747 and multi=port

[Tomlinson, Brandon B.]

I am curious about this also.  Will the driver circuit take it?


-----Original Message-----
From: gmecm-bounces at diy-efi.org [mailto:gmecm-bounces at diy-efi.org] On
Behalf Of Frank McCracken
Sent: Friday, April 08, 2005 4:33 PM
To: gmecm at diy-efi.org
Subject: Re: [Gmecm] '747 and multi=port

I would like to know as much as I can about this. I have been told that
there is no way a '747can handle more than 2 injectors. There is one
company
that modifying them to run dual tbi's but they would break up at 4800rpm
or
so.
Frank


----- Original Message -----
From: "David Haggard" <david at newcovenant.com>
To: <gmecm at diy-efi.org>; <hernt at mindspring.com>
Sent: Friday, April 08, 2005 4:56 AM
Subject: RE: [Gmecm] '747 and multi=port


Thanks.
Did that setup come from Edelbrock? I mean, connecting the injectors to
the
'747?

David

> -----Original Message-----
> From: gmecm-bounces at diy-efi.org
> [mailto:gmecm-bounces at diy-efi.org] On Behalf Of Dave Harvey
> Sent: Friday, April 08, 2005 12:43 AM
> To: gmecm at diy-efi.org
> Subject: Re: [Gmecm] '747 and multi=port
>
> David,
> My 91 GMC pickup was originally TBI w/ 1227747. I installed
> an Edelbrock multi-port injection sytem on top of an HT383
> engine. The Edelbrock uses the '747 to bank-fire the
> injectors. I'm 99% sure the injectors are wired in parallel
> in 2 groups of 4. Pretty slick setup.
>
> -- Dave
>
> David Haggard wrote:
>
> > I seem to recall reading in past documents and messages
> that a 1227747
> > can run multi-port injection in bank-fire mode.
> >
> >
> >
> > Is this true? If so, should each bank of injectors be wired
> in series,
> > or parallel? (I once had a dual 2-bbl TBI setup on a crossfire, and
> > those injectors had to be wired in series. They would not
> fire at all
> > in parallel.)
> >
> >
> >
> > David Haggard
> >
> >    '88 Formula Firebird "SR-71 Black 'Bird"
> >
> >
> >
> >
>
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