Re: [Chevelle-list] Porting heads.

[Geoffrey Barnett]

Dennis,
it depends on the skill of the person doing the grinding ,
any gains in low lift flow will be a measurable gain if a person goes wild 
and makes the ports huge it will kill air speed at normal engine speeds as 
well as drivability,fuel consumption ect. ect.
so yes there are gains that could be made how good is the person doing the 
grinding
is the real question.
Geoff
right foot engine shop
----- Original Message ----- 
From: <[EMAIL PROTECTED]>
To: "The Chevelle Mailing List" <Chevelle-list@chevelles.net>
Sent: Friday, February 04, 2005 3:14 PM
Subject: Re: [Chevelle-list] Porting heads.


Dennis,
    Depends on the application(Pure race looking for the last .01).
When the 2.19 or 2.25 and 1.88 valves were put in hopefully they made
a plunge cut down into th ebowl area.  If they did I would just blend
it in if they didn't.  Outside of that you would be chasing small
gains for larger money.  Most large oval ports with a plunge cut and
larger valves flow very well.
Walt
http://www.personal.kent.edu/~wbainey/CHEVELLE.htm
----- Original Message -----
From: [EMAIL PROTECTED]
Date: Friday, February 4, 2005 4:05 pm
Subject: [Chevelle-list] Porting heads.
Do any of you guys know how much horse power there is to be gained in
porting a set of heads? I have a set of oval port cast heads off
of a 454
that already has had the over sized stainless valves installed.  I'm
putting this 454 in my 68 SS Chevelle. It's got a 400 turbo trany
with
with 308 gears. Just wondering if it's worth the extra cost while
I have
the engine apart?   Thanks ahead for any help you can give me on
this....Dennis