Exhaust Manifolds on 66 390cu

[SIXTSIX]

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]

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]

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.
Daytona

[SIXTSIX]

Originally Posted by t-bird-art

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.
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]

Originally Posted by t-bird-art

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)