Exhaust Manifolds on 66 390cu

SIXTSIX · Feb 4, 2004

Exhaust Manifold..

Has anyone out there had any success welding
a hairline crack on an exhaust manifold?
Also, will a manifold off a 352 ford motor fit
a 390 (66 tbird)?
Looking to replace proper studs in manifolds.
Local fastener, and ford dealer do not carry proper
studs, any advice would be much 'preciated.

...........Thanx Mike. (sixtsix)

t-bird-art · Feb 7, 2004

You didn't say which side has the exhaust manifold crack. The 66 Bird 390 has a heat riser on the passenger side . The heat riser requires a flat surface to bolt to the passenger exhaust manifold. 62-65 Birds did not have the heat riser so they will not work. As far as 352 manifold working , maybe , if it had a heat riser but are exhaust pipe / donut sizes right? Best to get manifold offen a 66 -390 Cu In. then you know it's right.

t-bird-art · Feb 7, 2004

<html>P.S. Welding manifold is a iffy proposition. It depends if welder is really experienced and iffy because there is so much heat in this exhaust ( contraction/expansion) cast iron welds just don't hold up. <a href="http://www.wunderground.com/US/FL/Port_Orange.html"> <img src="http://banners.wunderground.com/banner/gizmotimetemp_both/language/www/US/FL/Port_Orange.gif" alt="Click for Port Orange, Florida Forecast" height=41 width=127></a><br>Daytona

SIXTSIX · Feb 10, 2004

exhaust manifold

t-bird-art said:
<html>P.S. Welding manifold is a iffy proposition. It depends if welder is really experienced and iffy because there is so much heat in this exhaust ( contraction/expansion) cast iron welds just don't hold up. <a href="http://www.wunderground.com/US/FL/Port_Orange.html"> <img src="http://banners.wunderground.com/banner/gizmotimetemp_both/language/www/US/FL/Port_Orange.gif" alt="Click for Port Orange, Florida Forecast" height=41 width=127></a><br>Daytona

...thanx for your opinions, very much 'preciated. Talking
to a couple local welders, their answers were along the
same opinion. I wil continue searching for a replacement.

....................Mike (sixtsix)

SIXTSIX · Feb 10, 2004

manifolds

t-bird-art said:
You didn't say which side has the exhaust manifold crack. The 66 Bird 390 has a heat riser on the passenger side . The heat riser requires a flat surface to bolt to the passenger exhaust manifold. 62-65 Birds did not have the heat riser so they will not work. As far as 352 manifold working , maybe , if it had a heat riser but are exhaust pipe / donut sizes right? Best to get manifold offen a 66 -390 Cu In. then you know it's right.

Thanx for the info.....you may have saved me money
purchasing an incompatible replacement. I will take your advice and look for an original. 'Preciate it.

....................Mike. (sixtsix)

Exhaust Manifolds on 66 390cu

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