If you are planning on running a larger throttle body such as a stock v8 TB
port match the intake to the TB too. The holes are about 2mm smaller in
diameter than the bore of the TB.
Dave Clement
99 SLT+ CC 4x4
In article <BAY101-DAV81B91C5A17CD4C2BFFC1BD2030@phx.gbl>, fasstdak@hotmail.com
("Bernd D. Ratsch") writes:
>
>
>
> I switched over to a newer intake manifold (2000+ model) without the plenum
> divider, port matched all the intake ports to the heads, smoothed the
> runners (internally as well) - you can use a 3/4" sanding belt for this, and
> cleaned up all casting flash from the manifold. Injector holes radiused as
> well (head side). I also added a cooling system crossover at the back of
> the manifold as that's where the Magnum engines have hot-spots at the heads
> (this includes the 5.2/5.9L's with the M1 manifold).
>
> I definitely gained some mid-range...pulls harder and smoother from
> 2200-5000rpm.
>
> - Bernd
>
> -----Original Message-----
> From: owner-dakota-truck@bent.twistedbits.net
> [mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of James Calder
> Sent: Monday, May 30, 2005 8:29 AM
> To: dakota-truck@dakota-truck.net
> Subject: DML: RE: RE: Intake Manifold Modification
>
>
> What exactly can be done to the stock intake without losing any bottom end
> (how much to take off the divider, runner etc.). I've heard of filling the
> plenum but I would have to send it somewhere for that, right?
> James
>
> -----Original Message-----
> From: owner-dakota-truck@bent.twistedbits.net
> [mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of Bernd D.
> Ratsch
> Sent: Monday, May 30, 2005 9:02 AM
> To: dakota-truck@dakota-truck.net
> Subject: DML: RE: Intake Manifold Modification
>
>
> Yup....what would you like to know? :)
>
> - Bernd
> http://www.dodgetrucks.org/fasstdak (Intake Manifold modified)
>
> -----Original Message-----
> From: owner-dakota-truck@bent.twistedbits.net
> [mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of James Calder
> Sent: Monday, May 30, 2005 7:19 AM
> To: dakota-truck@dakota-truck.net
> Subject: DML: Intake Manifold Modification
>
>
>
> Can the stock 3.9 manifold be modified without losing any bottom end or will
> any mods move the power band up?
> What exactly can be done to it?
>
> Thanks again,
> James
>
>
>
This archive was generated by hypermail 2b29 : Wed Jun 01 2005 - 05:44:46 EDT