Original Message
They use completely different carburetor circuits.
By Dave Shoe - 05/28/2003 6:18:07 PM; IP 12.104.160.195
Since you likely run a dual plane intake with your 289, the neighboring cylinders in back will be on a different manifold plane, and will therefore use separate halves of the carburetor.

The main fomoco.com forum may have some small block folk who are more familiar with this phenomenon, reference:

http://www.fomoco.com/forummain/

Presently, I suspect there is more fanblade flow going toward the steering box side than the passenger side.

It sounds like a fun issue to track down, since it is running good. I'd sure like to try tinkering with your car (getting a little road time in, naturally).

Any chance somebody replaced the rear two tubes with thinwall pipe?

Shoe.
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Collapse <a href=../ForumFE/reply.aspx?ID=17337&Reply=17337><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor17337" onclick="return false;">2 "Glowing Rd Hot" Exhaust Pipes ?</a>&nbsp;-- <font color=#0000ff>Greg, <i>05/28/2003</i></font><script type="text/javascript">
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 2 "Glowing Rd Hot" Exhaust Pipes ? -- Greg, 05/28/2003
Collapse <a href=../ForumFE/reply.aspx?ID=17339&Reply=17337><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor17339" onclick="return false;">I suspect two pipes are close together.</a>&nbsp;-- <font color=#0000ff>Dave Shoe, <i>05/28/2003</i></font><script type="text/javascript">
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 I suspect two pipes are close together. -- Dave Shoe, 05/28/2003
 RE: I suspect two pipes are close together. -- Anthony, 05/28/2003
Collapse <a href=../ForumFE/reply.aspx?ID=17342&Reply=17337><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor17342" onclick="return false;">RE: I suspect two pipes are close together.</a>&nbsp;-- <font color=#0000ff>Greg, <i>05/28/2003</i></font><script type="text/javascript">
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 RE: I suspect two pipes are close together. -- Greg, 05/28/2003
They use completely different carburetor circuits. -- Dave Shoe, 05/28/2003
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