[DeTomaso] Muffler Choices

[Tom Borcich]

Ken, as I recall my headers have the same issue on the collectors where it chokes down right before the bolt flange, but I don't recall the dimension. I figured that was also something I'd have to remove when redoing my exhaust because that is the remaining bottle neck in the system once you go to the 2.5" or 3" exhaust tubing and the MagnaFlow mufflers.

Best Regards, Tom

Date: Mon, 25 Apr 2011 09:58:08 -0700
From: kenn_green at yahoo.com
Subject: Re: [DeTomaso] Muffler Choices
To: detomaso at realbig.com; tborcich at msn.com; wkooiman at earthlink.net

I received what I believe to be a Hall System with a car I'm presently putting back together.  The engine is suppose to be a low 400 FWHP Cleveland and has a 2500 to 6500 RPM rated Comp Cams cam in it, and it appears someone spent some $s on it a few years ago.  
 
Looking at the Hall parts, the primary tubes are 1 3/4 inch OD and the pipe from the collector to the mufflers is only 2 inches OD.  It seems like the primary tubes are good enough for the engine, but the collector and pipe seem small/restrictive.
 
Has anyone replaced the collector on headers like these with a good merge collector and maybe just a 2 1/2 or 2 3/4 pipe?  It seems like that would be enough for a moderate street engine?  Going from 2 inch to 2 1/2 increaeses the area by over 50%.
 
Ken

--- On Sat, 4/23/11, Will Kooiman <wkooiman at earthlink.net> wrote:


From: Will Kooiman <wkooiman at earthlink.net>
Subject: Re: [DeTomaso] Muffler Choices
To: MikeLDrew at aol.com, kenn_green at yahoo.com, detomaso at realbig.com, tborcich at msn.com
Date: Saturday, April 23, 2011, 9:36 PM


3" round fits.

The sway bar makes a small dent.  If that bothers you, you can mount the
sway bar under the lower a-arm.  The dent is too small to make a difference.

It needs to S towards the center of the car near the half shafts.  That's
where there's the most clearance.

-----Original Message-----
From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com] On
Behalf Of MikeLDrew at aol.com
Sent: Saturday, April 23, 2011 8:22 PM
To: kenn_green at yahoo.com; detomaso at realbig.com; tborcich at msn.com
Subject: Re: [DeTomaso] Muffler Choices


In a message dated 4/23/11 18 00 22, kenn_green at yahoo.com writes:


> I think this has been discussed before, probably more than once, but will 
> a 3 inch pipe fit between the collectors and the mufflers?
> 

Pat Mical and a few others have successfully used *oval* 3-inch pipe.   
Round pipe won't make it I don't
 think.

Mike
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