A question about intakes

toolmanmike said

I don't believe I have ever seen a D4B with a part number. I don't think the part numbered LD4B's came out until later. (not immediately in 1966)

Click to expand...

And I can't imagine the part numbers were the same. I have seen a lot of LD4B's (just because I have owned a half dozen) with missing numbers and letters. These were sand cast and not the highest quality casting wise.