JW - the reason I did not include Carter, was that the original poster did not specify engine size. As you are aware, Carter DID offer Chevrolet replacements for the 216 and 235, and a very difficult to find replacement for the 250. No direct replacement was offered for the 261 or 292. I was trying to make the post as generic as possible. I would rate the Carter YF right at, or just a percentage or two below the Zenith or Stromberg.
Back on the adapters:
We were trying to come up with an inexpensive fix for some VERY expensive cars, whose original carburetors, when available at all, were well into 4 figures! We spent quite a lot of time, fruitlessly, on testing; finally arriving at the conclusion is was simply much better to fabricate a new intake. We fabricated several different adapters, and did find adapters 4 inches tall or taller, with shaped ports, would add a couple of percentage points to the adapted system. Still way below what was possible without the adapter.
Tim - took a look at your reference link, and quite curious as to the original source for this data, as Carter DID NOT specify a solid needle for the Chevrolet YF replacements. Did not check any other information on the link.
Jon.
Last edited by carbking; 01/04/2018 8:22 PM.
