I have a '96 Dakota with the 3.9L V6. What other 'safe' and sane
ways are available to make it faster (aside from headers and
a cat back?
Mat
jules wrote:
>
> Andre Mauboussin wrote:
> >
> > jaallis@ibm.net wrote:
> > >
> > > I've read all the posts awhile back regarding TB's. I never saw if anyone
> > > benefited from them. If there was a difference was it worth the cost?
> > > Also, I read somewhre that the V6 uses a TB with smaller throttle plates
> > > than the V8's. If true, could I use a V8 TB either modified or not to
> > > achieve even more airflow and increases than if I used a modified V6 TB?
> > >
> > >
> > Yes, you can bolt on a V8 throttle body, but you will have to remove
> > the inake and carefully grind the holes to the larger V8 diameter. While
> > you have the intake off, you can have a machine shop mill the intake
> > runners in the plenum area down. These two mods will give you
> > significant gains (25-30hp) and shouldn't cost too much. Get yourself a
> > copy of the July 97 issue of mopar muscle where these and other mods are
> > shown in detail. I don't recommend glasspack type mufflers. A large,
> > turbo syle muffler will perform better and can sound quite throaty as
> > well. Good luck
>
> fyi...
>
> over the past several quarters we have had several 3.9 customers send us
> their changed out V8 tbis to exchange for modified MPI 3.9s as they did
> not like the performance with the v8 they put on. soft bottom ends,
> poor in traffic performance, stock worse than modified 3.9s.
>
> we milled 1/4" off an intake runner and measured it on a superflow 600
> set on a 420 scale. the monometer showed NO movement of the fluid
> level... ie, no cfm gains! imo, based upon extensive work in the
> manifold and tbi area the milled runner may give some gains at WOT with
> a built engine, but for the "regular" guy... it will be a costly
> exercise with little or no effective gains. there are other ways to
> wake the 3.9 and it IS easy to get it to out run a stock 5.2 or a 5.9...
>
> to say you will get significant gains with above referenced info from
> the mag article is a misrepresentation of the facts..., ioo
>
> magnum performance
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