400Re: MPG improvements on BB Caddy
- Feb 1, 2003There's also www.diy-efi.org/gmecm
There you'll find info on how to use a stock GM ECM to control your Caddy.
It will take some editing of computer code, though.
There was a rare fuel injection option for 472's/500's. If you found one of
those manifolds, you could use port fuel injection instead of TBI.
My dad has one of the manifolds and is modifying a Caddy distributor to
accept the optical pickup from a '92-'97 LT1 optical distributor. Once
that's done he'll be able to run the 500 with LT1 electronics, which can be
reprogrammed with software here: www.carputing.com
> From: "plugers <plugers@...>" <plugers@...>
>Subject: Re: MPG improvements on BB Caddy
>If any of you are electronically inclined, try this group:
>I have built one and will be using it on my 500 build up.
><phoneman99a@y...>" <phoneman99a@y...> wrote:
> > I would also like to know where to buy a throttle body EFI
> > conversion to replace the Quad.
> > Giles
> > --- In
> > <Sundyrse59@a...> wrote:
> > > I can understand your need for fuel economy. In 1970, the BB
> > really
> > > came alive! taken from the corvette and put into the Eldo. what
> > > dream. Pass anything EXCEPT a gas station. I own a '70 Eldo. and
> > with
> > > straight back exhaust, middle crossover and 2 1/2" pipes all the
> > way
> > > back with Calif. turbos in between. This dream car can easily
> > cruise
> > > 85 mph all day and not hesitate once. I have the stock Rochester
> > quad-
> > > jet carb. I can acheive 23 m.p.g. on freeway, and 17 m.p.g. in
> > > cities. I am looking to better this. Where did you get your
> > throttle
> > > bore injection system and what about headers? the stock exhaust
> > > manifold is old and tired. also very thin and I am afraid it
> > > fall apart soon.
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