RE: 5.7 hemi swap

From: Bob Mankin (bob@coralfarms.com)
Date: Mon Sep 22 2003 - 18:05:47 EDT


I doubt you could get a reprogrammed PCM to run the 5.7L The NGC controller
used on the Hemi is a completely different animal.

For one, the spark plug firing logic doesn't exist in the earlier
controllers. That right there is a show stopper and AFAIK, there isn't
anything currently available in the aftermarket that would fit the bill
either.

Adapting a NGC to an older truck might work, but be prepared to rewire
pretty much the whole truck in order to get the sensors and the dashboard
working right.

Not worth the headache for a sub 300 rwhp setup, IMO. You could go further
with less grief hotrodding the 360.

Bob

> -----Original Message-----
> From: owner-dakota-truck@bent.twistedbits.net
> [mailto:owner-dakota-truck@bent.twistedbits.net]On Behalf Of garett
> Sent: Monday, September 22, 2003 12:58 PM
> To: dakota-truck@dakota-truck.net
> Subject: Re: DML: 5.7 hemi swap
>
>
>
> what about the PCM? would it simply need custom
> reprogramming or would it
> have to be swapped out with a different module?
>
> also, is it possible to make custom mounts if there is
> nothing that fits?
>
> does anyone know how much a 5.7 and a tranny costs?
>
> ----- Original Message -----
> From: "Michael Maskalans" <mike-lists@tepidcola.com>
> To: <dakota-truck@dakota-truck.net>
> Sent: Monday, September 22, 2003 11:22 AM
> Subject: Re: DML: 5.7 hemi swap
>
>
> >
> >
> > On Monday, September 22, 2003, at 11:08 AM, Terrible Tom wrote:
> >
> > > andy levy wrote:
> > >> garett wrote:
> > >>> has anyone actually looked in to doing a 5.7 hemi swap
> in to a genIII
> > >>> dakota? i really have been thinking about it as a
> future project
> > >>> but would
> > >>> like to have more knowledge about it before i just jumped in and
> > >>> started
> > >>> doing things.
> > >> IIRC, it's too tall to fit under the cowl.
> > >
> > > hmm ok - what about engine mounts, flywheel and tranny
> bolt patterns?
> >
> > chances are since it was interchangable with the 5.9 for a
> model year
> > (at least on paper) it uses the same mounts. of course it's also
> > possible that the mounts are different and both are
> provided for in the
> > Ram's engine bay, and a Dak would be screwed.
> >
> > as far as the trans and flywheel go, I think you'd want to
> be keeping
> > the trans that was mated to the hemi to begin with along with the
> > engine, since it's rated to put out a pile more torque than
> the 5.2/5.9.
> >
> > I haven't seriously investigated anything like this, but
> these are the
> > lines I've been thinking along for the
> 5-years-down-the-line swap I'm
> > considering.
> > --
> > Michael Maskalans '98 Dakota SLT CC 4x4 318
> > details here: <http://mike.tepidcola.com/dak.html>
> > mobile.612.618.4652 campus.585.274.2246 fax.954.697.0487
> >
> >
>



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