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Author Topic:   Headers ??
sodi
Gearhead

Posts: 225
From: Kenosha Wi. USA
Registered: Dec 2002

posted 01-28-2006 07:14 PM     Click Here to See the Profile for sodi   Click Here to Email sodi     Edit/Delete Message   Reply w/Quote
Reading another post I noticed someone wanting 1 3/4 headers . I'm planning on ordering headers soon myself and wondered witch size to shoot for, Would I want 1 5/8 or 1 3/4" The application will be going on a 70 Mach 1 351w, toploader. Edl.RPM intake Edl.RPM heads ported-polished, 650 holly carb. Comp cam 270 H. Hopefully producing just under 400HP does that sound like I'm in the ball park? NOW what diamiter headers ? Thanks in advance Sodi

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Fastymz
Moderator

Posts: 21275
From: Reno Nv USA M&M#1240
Registered: Apr 2001

posted 01-28-2006 07:18 PM     Click Here to See the Profile for Fastymz   Click Here to Email Fastymz     Edit/Delete Message   Reply w/Quote
The HP sounds real close. I'd stay with the 1 5/8 unless your doing a lot of drags.
I have the exact same motor build and parts with 10-1 compression. I use the 1 5/8 headers.
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[This message has been edited by Fastymz (edited 01-28-2006).]

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Mark Ugrich
Journeyman

Posts: 26
From: Waukesha, Wisconsin,U.S.A.
Registered: Jan 2006

posted 01-28-2006 07:20 PM     Click Here to See the Profile for Mark Ugrich   Click Here to Email Mark Ugrich     Edit/Delete Message   Reply w/Quote
Use the 1 5/8 headers, 1 3/4 is more or less higher rpm stuff. The whole idea is to keep the exhaust gas velocity up.

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stinger
Gearhead

Posts: 300
From: mn
Registered: Feb 2003

posted 01-28-2006 07:51 PM     Click Here to See the Profile for stinger   Click Here to Email stinger     Edit/Delete Message   Reply w/Quote
i used 1 5/8 hooker super comps I bought from a member of this board well over a year ago. a pain in the arse too install but hopefully worth it.

[This message has been edited by stinger (edited 01-28-2006).]

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