DeTomaso Mailing List: May 99, Message #277

I did this modification. I bought the alumimun Jack Roush manifold that fits
the C302B Aluminim SVO heads. I filled the intake ports of my 4BBL heads
with a kit that Jack Roush racing sells. It is a cast aluminum plug that
epoxy's into the bottom of the intake port and also has a set screw to hold
them in place. I had to mill the manifold slightly to get the ports to line
up top and bottom. However the manifold ports are narrower than the 4BBl
heads. The plug kit from Roush is something they developed years ago when
Glidden was running the Cleveland in the Pinto. The kits are reasonably
priced and easy to install. You do have to do some port blend work
afterwards. I never finished the project because I found a set of C302B
heads and sold off the heads and manifold. My guess is that it would work
real well but question the bang for buck in comparison to the Holley strip
dominator manifold.

Cary


-----Original Message-----
From: Daniel Jones [mailto:djones2@mdc.com]
Sent: Friday, May 07, 1999 6:46 AM
To: Multiple recipients of list
Subject: A331 Intake Manifold -Reply


Let me answer my own question.  It turns out the the intake port
is *not* relocated upward.  It only has the bottom filled in.  I was
sure I checked this previously and thought the port was raised but
that's not the case.  This means any 4V intake will bolt up.  All 
that's required is to fill the lower part of the port with aluminum 
weld.  I'll probably re-work the A331 with the suggestions Vizard
mentions in his induction book and see how that works.  I might
also try a Strip Dominator or Blue Thunder.  I'd rather try the
Strip Dominator but the Blue Thunder would have the advantage
of having carb heat for quicker warm ups.

The A331 is essentially just a Torker with the bottom part of 
the port filled.  Should work better than a Torker since the 
ports are smaller.

Dan Jones 

>The intake port of an A3/B351/C302 head is relocated upward from 
>the standard 4V port location.  I've always assumed high port 
>intakes were unique castings with the runners raised to match the 
>relocated intake port.  However, that wouldn't work if the A331
>and the Torker are the same basic casting.