Original Message
RE: Stock Exhaust Manifolds for 390
By Dave Shoe - 07/24/2001 7:41:47 PM; IP 12.2.11.131
1965-earlier heads don't have the extra bosses cast in to allow the extra exhaust manifold holes. All 1966-later heads DO have the extra bosses, but there are complicating issues with these later heads, too.

1966 was the first big year for emissions control in the FE. All the heads were updated. Most got redesigned runners. This makes compatibility with Hookres dicey, if you don't know what to look for.

You might try searching for "C6AE-R" in this forum, in the hopes of finding one of the many posts which discusses the complicating factors

Also, do NOT install 390 unibody exhaust manifolds (most C60E or C70E exh manifolds) on your unibody car. They are horrible breathers and are not compatible with certain types of FE exhaust runners (they will leak). C80E is a much better exhaust manifold to start with.

Shoe.
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Collapse <a href=../ForumFE/reply.aspx?ID=7314&Reply=7314><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor7314" onclick="return false;">Stock Exhaust Manifolds for 390</a>&nbsp;-- <font color=#0000ff>Scott Perry, <i>07/23/2001</i></font><script type="text/javascript">
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 Stock Exhaust Manifolds for 390 -- Scott Perry, 07/23/2001
Collapse <b>RE: Stock Exhaust Manifolds for 390</b>&nbsp;-- <font color=#0000ff>Dave Shoe, <i>07/24/2001</i></font>RE: Stock Exhaust Manifolds for 390 -- Dave Shoe, 07/24/2001
Collapse <a href=../ForumFE/reply.aspx?ID=7341&Reply=7314><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor7341" onclick="return false;">RE: Stock Exhaust Manifolds for 390</a>&nbsp;-- <font color=#0000ff>Scott Perry, <i>07/25/2001</i></font><script type="text/javascript">
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 RE: Stock Exhaust Manifolds for 390 -- Scott Perry, 07/25/2001
 Scott, patience and good karma......[n/m] -- HighSpeed, 07/25/2001
 RE: Stock Exhaust Manifolds for 390 -- Brian Crisman, 07/26/2001
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