Original Message
For '66-67 only California engines got Thermactor.
By Dave Shoe - 06/17/2002 1:07:45 AM; IP 63.233.230.100
The Thermactor bosses are cast into all emissions era (1966-later) FE heads (except 427 race heads), but they are only drilled for GT/PI cammed engines destined for California.

It wasn't until 1968 that all GT/PI/CJ cammed engines required Thermactor in all 50 States. The extra valve overlap of the warmer cam caused too much raw gasoline to flow straight from the intake runner out the exhaust runner, so an exhaust gas reactor was required to clean things up.

Oh, by the way, this is just my opinion. I'm most likely correct, but I continue to seek more printed matter on the topic before I will consider it fact.

Shoe.
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Collapse <a href=../ForumFE/reply.aspx?ID=13362&Reply=13362><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor13362" onclick="return false;">C6AE-R heads...any good?</a>&nbsp;-- <font color=#0000ff>joe schepker, <i>06/16/2002</i></font><script type="text/javascript">
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 C6AE-R heads...any good? -- joe schepker, 06/16/2002
Collapse <a href=../ForumFE/reply.aspx?ID=13363&Reply=13362><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor13363" onclick="return false;">Yup.</a>&nbsp;-- <font color=#0000ff>Dave Shoe, <i>06/16/2002</i></font><script type="text/javascript">
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 Yup. -- Dave Shoe, 06/16/2002
Collapse <a href=../ForumFE/reply.aspx?ID=13364&Reply=13362><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor13364" onclick="return false;">RE: Yup.</a>&nbsp;-- <font color=#0000ff>joe schepker, <i>06/17/2002</i></font><script type="text/javascript">
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 RE: Yup. -- joe schepker, 06/17/2002
For '66-67 only California engines got Thermactor. -- Dave Shoe, 06/17/2002
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