History Sbc single plane and tunnel ram intakes

What year were the first single plane and tunnel ram intakes available for SBC?

 

I was using the old Offy "shoebox" one back in 1965, bought it used, so well before '65..

 

Agreed^, but in explanation the Edelbrock TR-1 was known as the shoe box for its large plenum that was about the size of that item. And yes, Edelbrock came out with theirs in 1968, but the Ridge Ram preceded that by maybe a couple of years.

 

Here are a few threads searching the HAMB will provide:
https://www.jalopyjournal.com/forum/threads/when-did-tunnel-rams-first-come-about.965991/
https://www.jalopyjournal.com/forum/threads/first-production-tunnel-ram.433343/
https://www.jalopyjournal.com/forum/threads/tunnel-ram-dual-quad-intake-manifold-origins.239077/
https://www.jalopyjournal.com/forum/threads/when-where-these-tunnel-ram-intakes-made.686467/

 

I would think Creitz would be the first single plane intake, probably 1960.

 

My bad...it may have been an Edelbrock....