What did these exhaust manifolds come off of?

[atomman]

OK, I have two exhaust manifolds that I believe came from a piece of farm equipment. Does any one know? I have one set, would need four for the v-12.
looking for all ideas.
atomman

[bigblockv6]

These type of manifolds were used in industrial applications. Also 7500-8500 series tilt cabs used exhaust manifold where the exhaust dumped out straight out the back, though they weren't the I beam style they were very beefy, I've got a 73 478M with these manifolds, sometime I will post a pic.

[BobBray]

Those are the ones with the removable ends. Primarily industrial, but they were sometimes used when GMC V-6's were swapped into other makes of trucks. I seem to remember there are drawings of them in some of the replacement engine catalogs. Like to see rear dump tilt cab exhaust manifolds! All the tilts I have seen had 305's or 351's with regular I-beam manifolds.

[atomman]

Well , if any one has a extra set, I could use them. would look great on a V-12.
Dan

[atomman]

I am looking for a pair of these exhaust manifolds. please contact Dan at 803-four two five-8649
Atomman