There is a header calculator on the net.

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Posted by Chris Case [75.36.45.253] on Friday, November 23, 2012 at 23:01:34 :

In Reply to: Re: Dual Exhaust? posted by Kaegi [24.16.253.154] on Friday, November 23, 2012 at 12:53:40 :

IIRC, the 230 needs 7/8 ID tubes, with primaries six feet long. Those would maximize at 3200 rpms.

I used the smallest mandrel bends I could find, 1 3/8". I think the exhaust only has two butt joints, custom bends would not be worth it.

One problem I perceived is that headers are made to fit with stock intakes, and aftermarket intakes are made to fit with stock exhausts. So I custom made both as functional as possible. Without regard to fitting any iron parts.

I can make more. I saved my jigs, and have a spare motor/bell on a pallet. And bought a tig welder. And I guarantee my welds- to look like pigeons did them. ;^) Stainless is an option. Glass bead blasted?

http://photos.imageevent.com/bigchriscase/exhaustheadersandintakemanifold/icons/Power%20Wagon%20Progress%20062.jpg

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Re: There is a header calculator on the net. - Gary Troxel 11:23:01 11/24/2012

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