[Gmecm] Looking for MPI/Conversion information for GM 454 Cubic Inch Engine

[Aaron]

Let's start with WHY TPI / MPI?

The TBI factory manifolds or adapter plates for your current manifold would
be cheaper and easier to find.

 

Is there even a factory GM 454 TPI other than the Vortec?

And doesn't the Vortect heads have a different intake port location than the
older 454?

 

From: gmecm-bounces at diy-efi.org [mailto:gmecm-bounces at diy-efi.org] On Behalf
Of Adrian Flynn
Sent: Tuesday, September 13, 2011 3:27 PM
To: Gmecm at diy-efi.org
Subject: [Gmecm] Looking for MPI/Conversion information for GM 454 Cubic
Inch Engine

 

September 13, 2011

Hello to everyone,

 

I have been setting in the background reading the posts and trying to make
sense out of them.

I am about to get my feet wet (as it were) with my 1973 3/4 ton Suburban.
4X2

 

What I want to do is add Multi port Injection in place of the
Carter/Edelbrock Carburetor that is currently powering it.

 

I would like some pointers in the right direction as to what I will need to
do to accomplish this.

 

What I would like to do is acquire a complete GM system from a junkyard 454
(Yeah I know Headaches),

My main reason for doing this is that I am living on a Disability income and
don't really have the coins to 

buy a NEW unit.

 

Electronics was my lively hood for over 35 years as a repairman of TV's,
Stereos, Microwaves ETC;

so computers and such do not bother me and I have the tools for servicing
them.

Only thing I do not have is Scan Tools for Automotive Computers, OBD_I & II
etc.

 

I know this is reinventing the wheel but I hope to be able to get the
information I need to do this., and what pitfalls to avoid

 

The Suburban is a factory 454 with the turbo 400 Transmission, it is
equipped with long tube headers, dual 2 1/2 inch cherry bomb exhaust.

I will be upgrading the Transmission to a 700R or 4L60 in about a year or
so.

 

The Suburban does not have a Cat on it (Missing when I bought it in AZ) but
don't mind putting one on if need be for best usage.

 

My goal is best fuel mileage possible, with maximum low end torque.

I WILL NOT BE RACING IT!

I may be towing with it from time to time a trailer that grosses out at
12,000 lbs.

 

I use to have a 25' Sports Coach on a GM Chassis with the 454 and I averaged
15 MPG when I was not towing a Ford E150 behind it, with the E150 I averaged
10 MPG.

 

 

OK, I probably have bored you enough but I like to try to fill in the basics
of what I have and plan to do when asking questions like this.

 

I thank you for your time.

 

Adrian Flynn KF7DYU

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.diy-efi.org/pipermail/gmecm/attachments/20110914/3d701d42/attachment.html