First Generation Firebird-L Mailing List
 
"d"port or "round" port
  by "danny" <dannyboylll@qwest.net>
 

(back)
Subject: "d"port or "round" port
From: "danny" <dannyboylll@qwest.net>
Date: Tue, 16 Jan 2001 00:37:26 -0700
 
	ok  i am getting more confused by the minute i have a set of aluminum
edelbrock heads "performer rpm heads.  "the 1800$ ones in any jegs or =
summit
catalog.  do these heads have round port or D port exhaust holes????   i
can't seem to figure this because both my aluminum heads and a set of cast
iron stock heads both have ports that look D shaped to me   my heads have
the flat part of the "D" on the bottom of the exhaust port, and the round
part of the D in the top.  the other ones have the "D" arranged with their
flat sides togther (center ports)    i have whipped up a  quick and dirty
pict of what i am talking about. if anyone wants to mail me off list i wil
send it.
	Edelbrock claims that these heads (my aluminum ones) have their exhaust
ports "patterned after RA IV exhaust ports."  in the ames catalog they =
sell
manifolds that will fit RA IV ROUND PORT heads.  now  here is the =
kicker...
edelbrock clamis that their heads are D port heads!!!!!!!   so... that =
means
that pontiac either made both round and D port RA IV heads, or someone =
made
a mistake in their catalogs.   either way i need some definite info on
weather my heads are round or D port.      -danny  68 400  new mex.