Actually the larger valves are not much of benefit in street driving
regaurdless what cam is used.
Typically larger valves are needed with a larger displacement engine or "IF"
the engine is able to rev to a much higher RPM range.....
say in the 7k-9k RPM will the larger valves be of a benefit.
If your operating in the normal RPM power band........6,500 or less stick
with the stock size valves.
I just got my ported V6 heads........the port work is
OUTSTANDING!!.......and I'm only
running the stock 1.92/1.62 sizes in Stainless steel replacements!.....added
the Magnum R/T
springs, retainers, and locks though.
Ron-
'01 Dakota Sport 3.9 Supercharged
website: http://www.scsilverdak.com
e-mail: scsilverdak@hotmail.com
----- Original Message -----
From: "Gary Hedlin" <ghedlin@theramp.net>
To: <dakota-truck-moderator@bent.twistedbits.net>
Sent: Saturday, March 22, 2003 2:43 AM
Subject: DML: Re: RE: Porting stock heads (Ray Block)
>
> Yes and no... if he changed the cam, he'ld be fine, but if he doesnt he
> wouldnt be able to take advantage of the larger valves. He would just be
> throwing money away.
>
> Gary Hedlin
>
>
> ""RayB"" <bpracing@worldnet.att.net> wrote in message
> news:DHELJEKAGJCDGEGBEHHJEEJACNAA.bpracing@worldnet.att.net...
> >
> > > -----Original Message-----
> > > Hey Ray (and others that are interested),
> > > I came across this article and thought it kind of related to a
> > > few questions
> > > asked here on the DML recently. I know it's a Ford article (hey,
> > > I'm gonna
> > > fix up my 5.0 LX SOMEDAY), but the topic relates to what ya'll were
> > > discussing.
> > >
> > > Here's a quote: "With gains of 38HP and 39 ft lbs at the rear wheels,
> > > PowerHeads were an impressive bolt on, to say the least. The
> > > combination of
> > > small ports to maintain maximum velocity, excellent flow numbers (for
> the
> > > runner size) and an affordable price, make the PowerHeads hard to
> > > beat." --
> > > Muscle Mustangs & Fast Fords. July 1999 issue.> Brett Forehand
> >
> > Thanks Brett. I'm definitely a proponent of small port heads with high
> > velocity for a street driven vehicle. I've been trying to talk a guy
out
> of
> > buying heavily ported, big valve, R/T heads for a stock cammed 318.
He's
> > not listening though because the people selling them told him they'd be
> > perfect for him. Guess he'll have to learn the hard way. :-)
> >
> > RayB
> > http://www.dragtruk.com/ENTRIES/20KM1FD2KWBP.html
> >
> >
>
>
>
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