What is this SBC intake manifold?

[NHRAjeff]

Thanks for the replies. Had to laugh on the breather tube comment. With the yellow JD paint and breather tube that it might be some type of Tractor puller motor (no offense to any tractor pullers on the board). Appears with the 2 bends and next to the block must me some type of aftermarket breather. No holes in the valve covers, so that may be their breather.

I thought at first as well that someone ground off the Edelbrock casting name/numbers. If they did, they did a heck of a good job as not noticeable. This top has 4 holes for different carbs bolt patterns while Edelbrocks have 8. Probably need to pull off to see whats underneath. The casting looks like this link, but they all seem to resemble each other between brands.

http://www.guinns-engineering.com/Ri...0Prototype.htm