Joel, the shop I used said the best place for any cross-over tube is 17"
back from the heads so that back pressure is reduced ahead of the next
exhaust stroke. I used equal length headers and the spot for the cross over
worked out just behind the collector. I used 1 1/4 stainless pipe and bought
SS flanges from Aircraft Spruce and Specialties for Continental Engines
(four flanges and two gaskets). The shop was happy that I had these when I
delivered the car for exhaust fabrication. Robin Young
My
questions are: How far behind the collectors to put the cross over tube -
does not look like much room here in front of the X frame or should we put
it
behind the X frame
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