BBO exhaust manifolds

[hankthecrank]

Guys,

Can anyone tell me if big block olds exhaust manifolds will fit on small block olds cylinder heads? If not, then why?

 

[Blake442]

They'll fit the SBO heads just fine, but they will not fit on a SBO in the G-body chassis...

 

[Bar50]

If you can score some off of a Toronado, then they are more like normal, exhaust manifolds, without that stupid cross-over tail...

 

[FE3X CLONE]

Guys,

Can anyone tell me if big block olds exhaust manifolds will fit on small block olds cylinder heads? If not, then why?

They fit the heads but because of the difference in deck heights you run into clearance issues when installed on a sbo.

 

[Dragonist]

Are you in need of a set of Sbo manifolds? If so I can goto the local yard and pull you a set...sbo 307 or 350...I think they are the same manifold...I say this due to the one that was on my 350 looked the same(my 350 only had one when I pulled it from the junkyard)only thing that is different on the sbo 307 to 350 head is the manifold gasket

 

[hankthecrank]

thanks for the help everyone. Dragonist, thanks for the offer, but I'm going to keep exploring other options, like maybe finding someone who offers shorty or block hugging headers.

 

[DoubleV]

They'll fit the SBO heads just fine, but they will not fit on a SBO in the G-body chassis...

The Chassis has nothing to do with it. They will interfere with the oil filter housing and the starter, so they can't even be installed on a complete SBO on an engine stand. Yes, they would bolt right up to a SBO head, but you can't then fit that head/manifold onto the complete block.

There is one and only one reason SBO guys ( who don't run headers ) don't run the better BBO manifolds. It's because they don't fit pure and simple.