Is this a knock-off...?

Plumcrazy:

You will probably appreciate this thread over at HAMB:

6-71 Blower casting from start to finish

Guy works in a big foundry, and goes through the whole process - from deciding to cast them, making the tooling, ramming sand & pouring metal.

Great pics and narration for anybody that wants to see how it s actually done.


As for that manifold, probably was made to be a Nascar unit, went straight to Summit to fill an order instead. Edelebrock will probably send you a sticker if you contact them.

B.